UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D. C. 20549

FORM N-CSRS

Investment Company Act file number:  811-06071

 
DWS Institutional Funds
 (Exact Name of Registrant as Specified in Charter)

345 Park Avenue
New York, NY 10154-0004
 (Address of Principal Executive Offices) (Zip Code)

Registrant’s Telephone Number, including Area Code: (212) 250-3220

Paul Schubert
60 Wall Street
New York, NY 10005
 (Name and Address of Agent for Service)

Date of fiscal year end:
12/31
   
Date of reporting period:
6/30/2013

ITEM 1.
REPORT TO STOCKHOLDERS
   
JUNE 30, 2013
Semiannual Report
to Shareholders
 
DWS Equity 500 Index Fund
 
Contents
 
4 Letter to Shareholders
 
DWS Equity 500 Index Fund
5 Performance Summary
7 Portfolio Management
7 Portfolio Summary
9 Statement of Assets and Liabilities
10 Statement of Operations
11 Statement of Changes in Net Assets
12 Financial Highlights
14 Notes to Financial Statements
19 Information About Your Fund's Expenses
 
DWS Equity 500 Index Portfolio
22 Investment Portfolio
37 Statement of Assets and Liabilities
38 Statement of Operations
39 Statement of Changes in Net Assets
40 Financial Highlights
41 Notes to Financial Statements
47 Summary of Management Fee Evaluation by Independent Fee Consultant
51 Account Management Resources
53 Privacy Statement
 
This report must be preceded or accompanied by a prospectus. To obtain a summary prospectus, if available, or prospectus for any of our funds, refer to the Account Management Resources information provided in the back of this booklet. We advise you to consider the fund's objectives, risks, charges and expenses carefully before investing. The summary prospectus and prospectus contain this and other important information about the fund. Please read the prospectus carefully before you invest.
 
Investing in derivatives entails special risks relating to liquidity, leverage and credit that may reduce returns and/or increase volatility. Various factors, including costs, cash flows and security selection, may cause the fund's performance to differ from that of the index. The fund may lend securities to approved institutions. Stocks may decline in value. See the prospectus for details.
 
This fund is not sponsored, endorsed, sold, nor promoted by Standard & Poor's ® , and Standard & Poor's makes no representation regarding the advisability of investing in the portfolio.
 
DWS Investments is part of the Deutsche Asset & Wealth Management division of Deutsche Bank AG.
 
NOT FDIC/NCUA INSURED NO BANK GUARANTEE MAY LOSE VALUE NOT A DEPOSIT NOT INSURED BY ANY FEDERAL GOVERNMENT AGENCY
 
Letter to Shareholders
 
Dear Investor:
 
The first half of 2013 brought welcome evidence that the U.S. economic recovery is gaining traction. Consumer confidence reached its highest level since 2007, U.S. stock market indexes marked a series of record highs and the housing market continues its recovery.
 
According to Asoka Wohrmann, co-chief investment officer for Deutsche Asset & Wealth Management, "The revival of the employment market, good asset performance with rising home and share prices, and an expansive monetary policy gives further growth momentum to the real economy. Accordingly, U.S. economic growth could accelerate in the coming months."
 
Nevertheless, concerns about the European and emerging-market economies persist. Closer to home, the outlook remains guarded when it comes to the eventual end of government intervention in the bond market and the full effects of reduced government spending on employment.
 
Where does this leave you? That depends on a variety of factors, including your overall portfolio allocation. Given the uncertainties in today's bond and stock markets, it may be time for a thoughtful evaluation of your strategy.
 
Talk with a trusted advisor to determine whether any adjustments may be in order, given your specific objectives and risk tolerance. We believe even the most sophisticated investor can benefit from the assistance of a trusted, objective financial professional.
 
Remember that Deutsche Asset & Wealth Management gives you access to Deutsche Bank's global network of economists, analysts and investment professionals. Insights are always at your fingertips at dws-investments.com.
 
Best regards,
Douglas Beck, CFA
President, DWS Funds
 
Performance Summary June 30, 2013 (Unaudited)
Class S
6-Month
1-Year
5-Year
10-Year
Average Annual Total Returns as of 6/30/13
No Sales Charges
13.63%
20.15%
6.80%
7.08%
S&P 500 ® Index
13.82%
20.60%
7.01%
7.30%
Institutional Class
6-Month
1-Year
5-Year
10-Year
Average Annual Total Returns as of 6/30/13
No Sales Charges
13.65%
20.21%
6.88%
7.18%
S&P 500 ® Index
13.82%
20.60%
7.01%
7.30%
 
Performance in the Average Annual Total Returns table above and the Growth of an Assumed $1,000,000 Investment line graph that follows is historical and does not guarantee future results. Investment return and principal fluctuate, so your shares may be worth more or less when redeemed. Current performance may differ from performance data shown. Please visit www.dws-investments.com for the Fund's most recent month-end performance. Fund performance includes reinvestment of all distributions.
 
The gross expense ratios of the Fund, as stated in the fee table of the prospectus dated May 1, 2013 are 0.30% and 0.25% for Class S and Institutional Class shares, respectively, and may differ from the expense ratios disclosed in the Financial Highlights tables in this report.
 
Index returns do not reflect any fees or expenses and it is not possible to invest directly into an index.
 
Performance figures do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares.
 
Growth of an Assumed $1,000,000 Investment
Yearly periods ended June 30
 
The growth of $1,000,000 is cumulative.
 
The minimum initial investment for the Institutional Class is $1,000,000.
 
Performance of other share classes will vary based on the fee structure of those classes.
 
The Standard & Poor's 500 (S&P 500) Index is an unmanaged, capitalization-weighted index of 500 stocks. The index is designed to measure performance of the broad domestic economy through changes in the aggregate market value of 500 stocks representing all major industries. "Standard & Poor's," "S&P 500," "Standard & Poor's 500" and "500" are trademarks of The McGraw-Hill Companies Inc., and have been licensed for use by the Fund's investment advisor.
 
Total returns shown for periods less than one year are not annualized.
 
   
Class S
   
Institutional Class
 
Net Asset Value
 
6/30/13
  $ 179.95     $ 181.72  
12/31/12
  $ 159.88     $ 161.46  
Distribution Information as of 6/30/13
 
Income Dividends, Six Months
  $ 1.67     $ 1.73  
 
Portfolio Management
 
Subadvisor
 
Northern Trust Investments, Inc. ("NTI"), an indirect subsidiary of Northern Trust Corporation, is the subadvisor for the fund.
 
Portfolio Manager
 
Brent Reeder, Senior Vice President of Northern Trust Investments, Inc.
 
Portfolio Manager of the fund. Joined the fund in 2007.
 
Joined Northern Trust Investments, Inc. in 1993 and is responsible for the management of quantitative equity portfolios.
 
Portfolio Summary   (Unaudited)
Ten Largest Equity Holdings at June 30, 2013 (17.8% of Net Assets)
1. Exxon Mobil Corp.
Explorer and producer of oil and gas
2.8%
2. Apple, Inc.
Designs, manufactures and markets personal computers and related computing and mobile communications devices
2.5%
3. Microsoft Corp.
Develops, manufactures, licenses, sells and supports software products
1.8%
4. Johnson & Johnson
Manufacturer of health care products and provider of related services
1.7%
5. General Electric Co.
Globally diversified technology and financial services company
1.6%
6. Google, Inc.
Provides a Web-based search engine for the Internet
1.6%
7. Chevron Corp.
Operator of petroleum exploration, delivery and refining facilities
1.6%
8. Procter & Gamble Co.
Manufacturer of diversified consumer products
1.4%
9. Berkshire Hathaway, Inc.
Holding company of insurance business and a variety of other businesses
1.4%
10. Wells Fargo & Co.
A diversified financial services company
1.4%
Portfolio holdings and characteristics are subject to change.
For more complete details about the fund's investment portfolio, see page 22 . A quarterly Fact Sheet is available on www.dws-investments.com or upon request. Please see the Account Management Resources section on page 51 for contact information.
 
Statement of Assets and Liabilities
as of June 30, 2013 (Unaudited)
 
Assets
 
Investment in the DWS Equity 500 Index Portfolio, at value
  $ 984,713,840  
Receivable for Fund shares sold
    1,151,234  
Other assets
    20,261  
Total assets
    985,885,335  
Liabilities
 
Payable for Fund shares redeemed
    7,645,929  
Accrued Trustees' fees
    57  
Other accrued expenses and payables
    262,012  
Total liabilities
    7,907,998  
Net assets, at value
  $ 977,977,337  
Net Assets Consist of
 
Undistributed net investment income
    1,567,389  
Net unrealized appreciation (depreciation) on investments and futures
    502,991,084  
Accumulated net realized gain (loss)
    10,983,583  
Paid-in capital
    462,435,281  
Net assets, at value
  $ 977,977,337  
Net Asset Value
 
Class S
Net Asset Value, offering and redemption price per share ($366,499,071 ÷ 2,036,715 outstanding shares of beneficial interest, $.01 par value, unlimited number of shares authorized)
  $ 179.95  
Institutional Class
Net Asset Value , offering and redemption price per share ($611,478,266 ÷ 3,364,898 outstanding shares of beneficial interest, $.01 par value, unlimited number of shares authorized)
  $ 181.72  
 
The accompanying notes are an integral part of the financial statements.
 
Statement of Operations
for the six months ended June 30, 2013 (Unaudited)
 
Investment Income
 
Income and expenses allocated from DWS Equity 500 Index Portfolio:
Dividends (net of foreign taxes withheld of $22,957)
  $ 11,473,457  
Interest
    1,791  
Income distributions — Central Cash Management Fund
    8,085  
Securities lending income, including income from Daily Assets Fund Institutional, net of borrower rebates
    72,554  
Expenses
    (538,180 )
Net investment income allocated from DWS Equity 500 Index Portfolio
    11,017,707  
Expenses:
Administration fee
    551,550  
Services to shareholders
    344,987  
Professional fees
    21,536  
Reports to shareholders
    20,902  
Registration fees
    18,835  
Trustees' fees and expenses
    2,605  
Other
    4,604  
Total expenses
    965,019  
Net investment income (loss)
    10,052,688  
Realized and Unrealized Gain (Loss)
 
Net realized gain (loss) allocated from DWS Equity 500 Index Portfolio:
Investments
    (2,256,924 )
Futures
    2,331,859  
In-kind redemptions
    80,768,386  
      80,843,321  
Change in net unrealized appreciation (depreciation) allocated from DWS Equity 500 Index Portfolio on:
Investments
    66,203,318  
Futures
    60,438  
      66,263,756  
Net gain (loss)
    147,107,077  
Net increase (decrease) in net assets resulting from operations
  $ 157,159,765  
 
The accompanying notes are an integral part of the financial statements.
 
Statement of Changes in Net Assets
Increase (Decrease) in Net Assets
 
Six Months Ended June 30, 2013 (Unaudited)
   
Year Ended December 31, 2012
 
Operations:
Net investment income (loss)
  $ 10,052,688     $ 30,961,589  
Net realized gain (loss)
    80,843,321       156,529,908  
Change in net unrealized appreciation (depreciation)
    66,263,756       33,236,257  
Net increase (decrease) in net assets resulting from operations
    157,159,765       220,727,754  
Distributions to shareholders from:
Net investment income:
Class S
    (3,427,642 )     (7,549,935 )
Institutional Class
    (6,055,110 )     (22,617,874 )
Total distributions
    (9,482,752 )     (30,167,809 )
Fund share transactions:
Proceeds from shares sold
    128,209,440       346,298,084  
Reinvestment of distributions
    7,725,643       26,556,998  
Payments for shares redeemed
    (284,565,826 )     (742,150,339 )
In-kind redemptions
    (402,880,047 )      
Net increase (decrease) in net assets from Fund share transactions
    (551,510,790 )     (369,295,257 )
Increase (decrease) in net assets
    (403,833,777 )     (178,735,312 )
Net assets at beginning of period
    1,381,811,114       1,560,546,426  
Net assets at end of period (includes undistributed net investment income of $1,567,389 and $997,453, respectively)
  $ 977,977,337     $ 1,381,811,114  
 
The accompanying notes are an integral part of the financial statements.
 
Financial Highlights
         
Years Ended December 31,
 
Class S
 
Six Months Ended 6/30/13 (Unaudited)
   
2012
   
2011
   
2010
   
2009
   
2008
 
Selected Per Share Data
 
Net asset value, beginning of period
  $ 159.88     $ 141.06     $ 141.15     $ 125.16     $ 101.24     $ 164.58  
Income (loss) from investment operations:
Net investment income a
    1.58       3.15       2.55       2.32       2.37       2.94  
Net realized and unrealized gain (loss)
    20.16       18.88       .02       16.06       23.89       (63.44 )
Total from investment operations
    21.74       22.03       2.57       18.38       26.26       (60.50 )
Less distributions from:
Net investment income
    (1.67 )     (3.21 )     (2.66 )     (2.40 )     (2.34 )     (2.84 )
Increase from regulatory settlements
                      .01 c            
Net asset value, end of period
  $ 179.95     $ 159.88     $ 141.06     $ 141.15     $ 125.16     $ 101.24  
Total Return (%)
    13.63 **     15.65       1.88       14.89 b,c     26.35 b     (37.12 ) b
Ratios to Average Net Assets and Supplemental Data
 
Net assets, end of period ($ millions)
    366       359       360       444       464       439  
Ratio of expenses before expense reductions, including expenses allocated from DWS Equity 500 Index Portfolio (%)
    .31 *     .30       .31       .31       .27       .32  
Ratio of expenses after expense reductions, including expenses allocated from DWS Equity 500 Index Portfolio (%)
    .31 *     .30       .31       .27       .21       .21  
Ratio of net investment income (%)
    1.82 *     2.03       1.79       1.81       2.22       2.13  
a Based on average shares outstanding during period.
b Total return would have been lower had certain expenses not been reduced.
c Includes a non-recurring payment from the Advisor which amounted to $0.007 per share recorded as a result of the Advisor's settlement with the SEC and NY Attorney General in connection with certain trading arrangements. Excluding this non-recurring payment, total return would have been 0.01% lower.
* Annualized
** Not annualized
 
 

         
Years Ended December 31,
 
Institutional Class
 
Six Months Ended 6/30/13 (Unaudited)
   
2012
   
2011
   
2010
   
2009
   
2008
 
Selected Per Share Data
 
Net asset value, beginning of period
  $ 161.46     $ 142.46     $ 142.57     $ 126.38     $ 102.25     $ 166.22  
Income (loss) from investment operations:
Net investment income a
    1.59       3.23       2.68       2.49       2.43       3.09  
Net realized and unrealized gain (loss)
    20.40       19.09       .01       16.22       24.17       (64.06 )
Total from investment operations
    21.99       22.32       2.69       18.71       26.60       (60.97 )
Less distributions from:
Net investment income
    (1.73 )     (3.32 )     (2.80 )     (2.53 )     (2.47 )     (3.00 )
Increase from regulatory settlements
                      .01 c            
Net asset value, end of period
  $ 181.72     $ 161.46     $ 142.46     $ 142.57     $ 126.38     $ 102.25  
Total Return (%)
    13.65 **     15.71       1.95       15.01 b,c     26.44 b     (37.06 ) b
Ratios to Average Net Assets and Supplemental Data
 
Net assets, end of period ($ millions)
    611       1,023       1,200       1,521       1,483       1,283  
Ratio of expenses before expense reductions, including expenses allocated from DWS Equity 500 Index Portfolio (%)
    .26 *     .25       .24       .23       .23       .24  
Ratio of expenses after expense reductions, including expenses allocated from DWS Equity 500 Index Portfolio (%)
    .26 *     .25       .24       .17       .15       .10  
Ratio of net investment income (%)
    1.83 *     2.06       1.85       1.92       2.28       2.24  
a Based on average shares outstanding during the period.
b Total return would have been lower had certain expenses not been reduced.
c Includes a non-recurring payment from the Advisor which amounted to $0.007 per share recorded as a result of the Advisor's settlement with the SEC and NY Attorney General in connection with certain trading arrangements. Excluding this non-recurring payment, total return would have been 0.01% lower.
* Annualized
** Not annualized
 
 
Notes to Financial Statements (Unaudited)
 
A. Organization and Significant Accounting Policies
 
DWS Equity 500 Index Fund (the "Fund") is a diversified series of DWS Institutional Funds (the "Trust"), which is registered under the Investment Company Act of 1940, as amended, (the "1940 Act"), as an open-end management investment company organized as a Massachusetts business trust.
 
The Fund, a feeder fund, seeks to achieve its investment objective by investing all of its investable assets in a master portfolio, DWS Equity 500 Index Portfolio (the "Portfolio"), a diversified, open-end management investment company registered under the 1940 Act and organized as a New York trust advised by Deutsche Investment Management Americas Inc. ("DIMA" or the "Advisor"), an indirect, wholly owned subsidiary of Deutsche Bank AG. A master/feeder fund structure is one in which a fund (a "feeder fund"), instead of investing directly in a portfolio of securities, invests most or all of its investment assets in a separate registered investment company (the "master fund") with substantially the same investment objective and policies as the feeder fund. Such a structure permits the pooling of assets of two or more feeder funds, preserving separate identities or distribution channels at the feeder fund level. On June 30, 2013, the Fund owned approximately 55% of the Portfolio.
 
The Fund offers two classes of shares: Institutional Class and Class S. Institutional Class shares are generally available only to qualified institutions, are not subject to initial or contingent deferred sales charges and generally have lower ongoing expenses than other classes. Class S shares are not subject to initial or contingent deferred sales charges and are only available to a limited group of investors.
 
Investment income, realized and unrealized gains and losses, and certain fund-level expenses and expense reductions, if any, are borne pro rata on the basis of relative net assets by the holders of both classes of shares, except that each class bears certain expenses unique to that class such as services to shareholders and certain other class specific expenses. Differences in class-level expenses may result in payment of different per share dividends by class. All shares of the Fund have equal rights with respect to voting subject to class-specific arrangements.
 
The Fund's financial statements are prepared in accordance with accounting principles generally accepted in the United States of America which require the use of management estimates. Actual results could differ from those estimates. The policies described below are followed consistently by the Fund in the preparation of its financial statements. The financial statements of the Portfolio, including the Investment Portfolio, are contained elsewhere in this report and should be read in conjunction with the Fund's financial statements.
 
Security Valuation. The Fund records its investment in the Portfolio at value, which reflects its proportionate interest in the net assets of the Portfolio. Valuation of the securities held by the Portfolio is discussed in the notes to the Portfolio's financial statements included elsewhere in this report.
 
Disclosure about the classification of fair value measurements is included in a table following the Portfolio's Investment Portfolio.
 
Federal Income Taxes. The Fund's policy is to comply with the requirements of the Internal Revenue Code, as amended, which are applicable to regulated investment companies, and to distribute all of its taxable income to its shareholders.
 
Under the Regulated Investment Company Modernization Act of 2010, net capital losses incurred post-enactment may be carried forward indefinitely, and their character is retained as short-term and/or long-term losses. Previously, net capital losses were carried forward for eight years and treated as short-term losses. As a transition rule, the Act requires that post-enactment net capital losses be used before pre-enactment net capital losses.
 
At December 31, 2012, the Fund had a net tax basis capital loss carryforward of approximately $67,697,000 of pre-enactment losses, which may be applied against any realized net taxable capital gains of each succeeding year until fully utilized or until December 31, 2017 ($40,686,000) and December 31, 2018 ($27,011,000), the respective expiration dates, whichever occurs first.
 
In addition, from November 1, 2012 through December 31, 2012, the Fund elects to defer qualified late year losses of approximately $2,592,000 of net long-term realized capital losses, approximately $54,000 of net short-term realized capital losses and treat them as arising in the fiscal year ending December 31, 2013.
 
The Fund has reviewed the tax positions for the open tax years as of December 31, 2012, and has determined that no provision for income tax is required in the Fund's financial statements. The Fund's federal tax returns for the prior three fiscal years remain open subject to examination by the Internal Revenue Service.
 
Distribution of Income and Gains. Distributions from net investment income of the Fund are declared and distributed to shareholders quarterly. Net realized gains from investment transactions, in excess of available capital loss carryforwards, would be taxable to the Fund if not distributed, and, therefore, will be distributed to shareholders at least annually. The Fund may also make additional distributions for tax purposes if necessary.
 
The timing and characterization of certain income and capital gain distributions are determined annually in accordance with federal tax regulations which may differ from accounting principles generally accepted in the United States of America. These differences primarily relate to redemptions in-kind, investments in futures contracts and certain securities sold at a loss. As a result, net investment income (loss) and net realized gain (loss) on investment transactions for a reporting period may differ significantly from distributions during such period. Accordingly, the Fund may periodically make reclassifications among certain of its capital accounts without impacting the net asset value of the Fund.
 
The tax character of current year distributions will be determined at the end of the current fiscal year.
 
Contingencies. In the normal course of business, the Fund may enter into contracts with service providers that contain general indemnification clauses. The Fund's maximum exposure under these arrangements is unknown as this would involve future claims that may be made against the Fund that have not yet been made. However, based on experience, the Fund expects the risk of loss to be remote.
 
Other. The Fund receives a daily allocation of the Portfolio's income, expenses and net realized and unrealized gains and losses in proportion to its investment in the Portfolio. Expenses directly attributed to a fund are charged to that fund, while expenses which are attributable to the Trust are allocated among the funds in the Trust on the basis of relative net assets.
 
B. Related Parties
 
Management Agreement. Under its Investment Management Agreement with the Fund, the Advisor serves as investment manager to the Fund. The Advisor receives a management fee from the Portfolio pursuant to the master/feeder structure noted above in Note A.
 
Pursuant to the Investment Management Agreement, the Fund pays no management fee to the Advisor so long as the Fund is a feeder fund that invests substantially all of its assets in the Portfolio. In the event the Board of Trustees determines it is in the best interests of the Fund to withdraw its investment from the Portfolio, the Advisor may become responsible for directly managing the assets of the Fund under the Investment Management Agreement. In such event, the Fund would pay the Advisor an annual fee of 0.05% of the Fund's average daily net assets, accrued daily and payable monthly.
 
Administration Fee. Pursuant to an Administrative Services Agreement, DIMA provides most administrative services to the Fund. For all services provided under the Administrative Services Agreement, the Fund pays the Advisor an annual fee ("Administration Fee") of 0.10% of the Fund's average daily net assets, computed and accrued daily and payable monthly. For the six months ended June 30, 2013, the Administration Fee was $551,550, of which $81,991 is unpaid.
 
Service Provider Fees. DWS Investments Service Company ("DISC"), an affiliate of the Advisor, is the transfer agent, dividend-paying agent and shareholder service agent for the Fund. Pursuant to a sub-transfer agency agreement between DISC and DST Systems, Inc. ("DST"), DISC has delegated certain transfer agent, dividend-paying agent and shareholder service agent functions to DST. DISC compensates DST out of the shareholder servicing fee it receives from the Fund. For the six months ended June 30, 2013, the amount charged to the Fund by DISC was as follows:
Services to Shareholders
 
Total Aggregated
   
Unpaid at June 30, 2013
 
Class S
  $ 25,523     $ 8,535  
Institutional Class
    65,931       25,387  
    $ 91,454     $ 33,922  
 
Typesetting and Filing Service Fees. Under an agreement with DIMA, DIMA is compensated for providing typesetting and certain regulatory filing services to the Fund. For the six months ended June 30, 2013, the amount charged to the Fund by DIMA included in the Statement of Operations under "reports to shareholders" aggregated $10,010, of which $9,738 is unpaid.
 
Trustees' Fees and Expenses. The Fund paid retainer fees to each Trustee not affiliated with the Advisor, plus specified amounts to the Board Chairperson and Vice Chairperson and to each committee Chairperson.
 
C. Share Transactions
 
The following table summarizes share and dollar activity in the Fund:
   
Six Months Ended June 30, 2013
   
Year Ended December 31, 2012
 
   
Shares
   
Dollars
   
Shares
   
Dollars
 
Shares sold
 
Class S
    267,490     $ 46,807,066       491,957     $ 76,282,824  
Institutional Class
    469,670       81,402,374       1,723,040       270,015,260  
            $ 128,209,440             $ 346,298,084  
Shares issued to shareholders in reinvestment of distributions
 
Class S
    18,584     $ 3,261,095       45,534     $ 7,204,161  
Institutional Class
    25,208       4,464,548       121,306       19,352,837  
            $ 7,725,643             $ 26,556,998  
Shares redeemed
 
Class S
    (495,074 )   $ (85,491,247 )     (846,156 )   $ (132,428,623 )
Institutional Class
    (1,123,809 )     (199,074,579 )     (3,934,990 )     (609,721,716 )
            $ (284,565,826 )           $ (742,150,339 )
In-kind redemptions
 
Institutional Class
    (2,340,693 )   $ (402,880,047 )         $  
Net increase (decrease)
 
Class S
    (209,000 )   $ (35,423,086 )     (308,665 )   $ (48,941,638 )
Institutional Class
    (2,969,624 )     (516,087,704 )     (2,090,644 )     (320,353,619 )
            $ (551,510,790 )           $ (369,295,257 )
 
D. In-Kind Redemptions
 
In certain circumstances, the Portfolio may distribute securities rather than cash as payments for a redemption of a feeder fund's shares (in-kind redemption). For financial reporting purposes, the Portfolio recognizes a gain on in-kind redemptions to the extent the value of the distributed securities exceeds their costs; the Portfolio recognizes a loss if cost exceeds value. Gains and losses realized on in-kind redemptions are allocated in proportion to each feeder fund's investment in the Portfolio, are not recognized for tax purposes and are reclassified from undistributed realized gain (loss) to paid-in capital. During the six months ended June 30, 2013, the DWS Equity 500 Index Fund was allocated $80,768,386 of net gain attributable to an in-kind redemption.
 
Information About Your Fund's Expenses
 
As an investor of the Fund, you incur two types of costs: ongoing expenses and transaction costs. Ongoing expenses include management fees and other Fund expenses. Examples of transaction costs include sales charges (loads) and account maintenance fees, which are not shown in this section. The following tables are intended to help you understand your ongoing expenses (in dollars) of investing in the Fund and to help you compare these expenses with the ongoing expenses of investing in other mutual funds. The example in the table is based on an investment of $1,000 invested at the beginning of the six-month period and held for the entire period (January 1, 2013 to June 30, 2013).
 
The tables illustrate your Fund's expenses in two ways:
 
Actual Fund Return. This helps you estimate the actual dollar amount of ongoing expenses (but not transaction costs) paid on a $1,000 investment in the Fund using the Fund's actual return during the period. To estimate the expenses you paid over the period, simply divide your account value by $1,000 (for example, an $8,600 account value divided by $1,000 = 8.6), then multiply the result by the number in the "Expenses Paid per $1,000" line under the share class you hold.
 
Hypothetical 5% Fund Return. This helps you to compare your Fund's ongoing expenses (but not transaction costs) with those of other mutual funds using the Fund's actual expense ratio and a hypothetical rate of return of 5% per year before expenses. Examples using a 5% hypothetical fund return may be found in the shareholder reports of other mutual funds. The hypothetical account values and expenses may not be used to estimate the actual ending account balance or expenses you paid for the period.
 
Please note that the expenses shown in these tables are meant to highlight your ongoing expenses only and do not reflect any transaction costs. The "Expenses Paid per $1,000" line of the tables is useful in comparing ongoing expenses only and will not help you determine the relative total expense of owning different funds. Subject to certain exceptions, an account maintenance fee of $20.00 assessed once per calendar year for Class S shares may apply for accounts with balances less than $10,000. This fee is not included in these tables. If it was, the estimate of expenses paid for Class S shares during the period would be higher, and account value during the period would be lower, by this amount.
 
Expenses and Value of a $1,000 Investment for the six months ended June 30, 2013 (Unaudited)
 
Actual Fund Return*
 
Class S
   
Institutional Class
 
Beginning Account Value 1/1/13
  $ 1,000.00     $ 1,000.00  
Ending Account Value 6/30/13
  $ 1,136.30     $ 1,136.50  
Expenses Paid per $1,000**
  $ 1.64     $ 1.38  
Hypothetical 5% Fund Return*
 
Class S
   
Institutional Class
 
Beginning Account Value 1/1/13
  $ 1,000.00     $ 1,000.00  
Ending Account Value 6/30/13
  $ 1,023.26     $ 1,023.51  
Expenses Paid per $1,000**
  $ 1.56     $ 1.30  
 
* Expenses include amounts allocated proportionally from the master portfolio.
 
** Expenses are equal to the Fund's annualized expense ratio for each share class, multiplied by the average account value over the period, multiplied by 181 (the number of days in the most recent six-month period), then divided by 365.
Annualized Expense Ratios
Class S
 
Institutional Class
DWS Equity 500 Index Fund
.31%
.26%
 
For more information, please refer to the Fund's prospectuses.
 
For an analysis of the fees associated with an investment in the Fund or similar funds, please refer to http://apps.finra.org/fundanalyzer/1/fa.aspx.
 
 
(The following financial statements of the DWS Equity 500 Index Portfolio should be read in conjunction with the Fund's financial statements.)
 
 
Investment Portfolio as of June 30, 2013 (Unaudited)
   
Shares
   
Value ($)
 
       
Common Stocks 97.9%
 
Consumer Discretionary 11.9%
 
Auto Components 0.4%
 
BorgWarner, Inc.*
    14,237       1,226,517  
Delphi Automotive PLC
    35,445       1,796,707  
Goodyear Tire & Rubber Co.*
    29,321       448,318  
Johnson Controls, Inc.
    83,210       2,978,086  
              6,449,628  
Automobiles 0.7%
 
Ford Motor Co. (a)
    483,513       7,479,946  
General Motors Co.* (a)
    95,022       3,165,183  
Harley-Davidson, Inc.
    27,737       1,520,542  
              12,165,671  
Distributors 0.1%
 
Genuine Parts Co. (a)
    18,854       1,471,932  
Diversified Consumer Services 0.0%
 
H&R Block, Inc.
    33,017       916,222  
Hotels, Restaurants & Leisure 1.8%
 
Carnival Corp.
    54,746       1,877,240  
Chipotle Mexican Grill, Inc.*
    3,665       1,335,343  
Darden Restaurants, Inc.
    16,174       816,464  
International Game Technology
    32,730       546,918  
Marriott International, Inc. "A"
    30,031       1,212,352  
McDonald's Corp.
    122,883       12,165,417  
Starbucks Corp.
    91,409       5,986,375  
Starwood Hotels & Resorts Worldwide, Inc.
    23,778       1,502,532  
Wyndham Worldwide Corp.
    16,517       945,268  
Wynn Resorts Ltd.
    9,951       1,273,728  
Yum! Brands, Inc.
    55,321       3,835,958  
              31,497,595  
Household Durables 0.3%
 
D.R. Horton, Inc. (a)
    33,409       710,944  
Garmin Ltd.
    13,191       476,987  
Harman International Industries, Inc. (a)
    8,298       449,752  
Leggett & Platt, Inc. (a)
    18,037       560,770  
Lennar Corp. "A" (a)
    20,622       743,217  
Newell Rubbermaid, Inc.
    34,889       915,836  
Pulte Group, Inc.*
    42,757       811,100  
Whirlpool Corp.
    9,459       1,081,731  
              5,750,337  
Internet & Catalog Retail 1.1%
 
Amazon.com, Inc.*
    44,697       12,411,910  
Expedia, Inc. (a)
    11,310       680,297  
Netflix, Inc.* (a)
    6,915       1,459,687  
Priceline.com, Inc.*
    6,332       5,237,387  
TripAdvisor, Inc.* (a)
    13,281       808,414  
              20,597,695  
Leisure Equipment & Products 0.1%
 
Hasbro, Inc. (a)
    14,632       655,952  
Mattel, Inc.
    42,432       1,922,594  
              2,578,546  
Media 3.6%
 
Cablevision Systems Corp. (New York Group) "A" (a)
    25,660       431,601  
CBS Corp. "B"
    69,913       3,416,648  
Comcast Corp. "A"
    322,998       13,527,156  
DIRECTV*
    68,471       4,219,183  
Discovery Communications, Inc. "A"* (a)
    29,728       2,295,299  
Gannett Co., Inc. (a)
    28,952       708,166  
Interpublic Group of Companies, Inc.
    51,856       754,505  
News Corp. "A"
    244,088       7,957,269  
Omnicom Group, Inc. (a)
    31,495       1,980,091  
Scripps Networks Interactive "A"
    10,609       708,257  
Time Warner Cable, Inc. (a)
    35,711       4,016,773  
Time Warner, Inc.
    114,163       6,600,905  
Viacom, Inc. "B"
    54,659       3,719,545  
Walt Disney Co. (a)
    220,889       13,949,140  
Washington Post Co. "B" (a)
    551       266,557  
              64,551,095  
Multiline Retail 0.8%
 
Dollar General Corp.*
    37,279       1,879,980  
Dollar Tree, Inc.*
    27,777       1,412,183  
Family Dollar Stores, Inc.
    11,806       735,632  
J.C. Penney Co., Inc.*
    16,573       283,067  
Kohl's Corp. (a)
    24,831       1,254,214  
Macy's, Inc.
    46,884       2,250,432  
Nordstrom, Inc. (a)
    18,589       1,114,224  
Target Corp. (a)
    78,728       5,421,210  
              14,350,942  
Specialty Retail 2.3%
 
Abercrombie & Fitch Co. "A" (a)
    10,088       456,482  
AutoNation, Inc.* (a)
    4,370       189,614  
AutoZone, Inc.*
    4,492       1,903,216  
Bed Bath & Beyond, Inc.* (a)
    26,730       1,895,157  
Best Buy Co., Inc. (a)
    32,639       892,024  
CarMax, Inc.* (a)
    27,158       1,253,613  
GameStop Corp. "A"
    14,807       622,338  
Home Depot, Inc.
    179,188       13,881,694  
L Brands, Inc.
    29,211       1,438,642  
Lowe's Companies, Inc.
    131,437       5,375,773  
O'Reilly Automotive, Inc.* (a)
    13,651       1,537,376  
PetSmart, Inc.
    12,437       833,155  
Ross Stores, Inc.
    26,795       1,736,584  
Staples, Inc. (a)
    81,114       1,286,468  
The Gap, Inc. (a)
    35,092       1,464,389  
Tiffany & Co.
    14,545       1,059,458  
TJX Companies, Inc.
    88,272       4,418,896  
Urban Outfitters, Inc.*
    13,636       548,440  
              40,793,319  
Textiles, Apparel & Luxury Goods 0.7%
 
Coach, Inc. (a)
    34,610       1,975,885  
Fossil Group, Inc.*
    6,604       682,259  
NIKE, Inc. "B"
    88,459       5,633,069  
PVH Corp.
    9,726       1,216,237  
Ralph Lauren Corp.
    7,592       1,319,034  
VF Corp. (a)
    10,785       2,082,152  
              12,908,636  
Consumer Staples 10.3%
 
Beverages 2.4%
 
Beam, Inc.
    19,602       1,237,082  
Brown-Forman Corp. "B" (a)
    18,708       1,263,725  
Coca-Cola Co. (a)
    469,809       18,844,039  
Coca-Cola Enterprises, Inc.
    31,273       1,099,559  
Constellation Brands, Inc. "A"*
    18,895       984,807  
Dr. Pepper Snapple Group, Inc. (a)
    25,234       1,158,998  
Molson Coors Brewing Co. "B"
    19,117       914,940  
Monster Beverage Corp.*
    17,500       1,063,475  
PepsiCo, Inc.
    189,661       15,512,373  
              42,078,998  
Food & Staples Retailing 2.3%
 
Costco Wholesale Corp.
    53,654       5,932,523  
CVS Caremark Corp.
    149,949       8,574,084  
Kroger Co.
    63,631       2,197,815  
Safeway, Inc. (a)
    30,111       712,426  
Sysco Corp. (a)
    72,342       2,471,202  
Wal-Mart Stores, Inc.
    200,974       14,970,553  
Walgreen Co.
    105,784       4,675,653  
Whole Foods Market, Inc.
    41,792       2,151,452  
              41,685,708  
Food Products 1.6%
 
Archer-Daniels-Midland Co.
    80,088       2,715,784  
Campbell Soup Co. (a)
    22,244       996,309  
ConAgra Foods, Inc.
    50,634       1,768,646  
General Mills, Inc. (a)
    78,939       3,830,910  
Hormel Foods Corp. (a)
    17,166       662,264  
Kellogg Co. (a)
    30,726       1,973,531  
Kraft Foods Group, Inc.
    72,708       4,062,196  
McCormick & Co., Inc. (a)
    16,485       1,159,884  
Mead Johnson Nutrition Co.
    24,748       1,960,784  
Mondelez International, Inc. "A"
    218,927       6,245,987  
The Hershey Co. (a)
    18,474       1,649,359  
The JM Smucker Co. (a)
    13,384       1,380,559  
Tyson Foods, Inc. "A"
    34,241       879,309  
              29,285,522  
Household Products 2.1%
 
Clorox Co. (a)
    16,367       1,360,753  
Colgate-Palmolive Co.
    107,304       6,147,446  
Kimberly-Clark Corp. (a)
    46,993       4,564,900  
Procter & Gamble Co.
    336,073       25,874,260  
              37,947,359  
Personal Products 0.2%
 
Avon Products, Inc.
    52,610       1,106,388  
Estee Lauder Companies, Inc. "A"
    29,285       1,926,075  
              3,032,463  
Tobacco 1.7%
 
Altria Group, Inc. (a)
    246,215       8,615,063  
Lorillard, Inc. (a)
    46,899       2,048,548  
Philip Morris International, Inc.
    200,552       17,371,814  
Reynolds American, Inc. (a)
    38,601       1,867,131  
              29,902,556  
Energy 10.3%
 
Energy Equipment & Services 1.8%
 
Baker Hughes, Inc.
    53,474       2,466,756  
Cameron International Corp.*
    30,703       1,877,795  
Diamond Offshore Drilling, Inc. (a)
    8,618       592,832  
Ensco PLC "A"
    28,726       1,669,555  
FMC Technologies, Inc.*
    29,325       1,632,816  
Halliburton Co.
    114,438       4,774,353  
Helmerich & Payne, Inc. (a)
    12,848       802,358  
Nabors Industries Ltd.
    35,964       550,609  
National Oilwell Varco, Inc.
    52,359       3,607,535  
Noble Corp.
    31,414       1,180,538  
Rowan Companies PLC "A"*
    15,652       533,264  
Schlumberger Ltd.
    162,653       11,655,714  
              31,344,125  
Oil, Gas & Consumable Fuels 8.5%
 
Anadarko Petroleum Corp.
    61,618       5,294,835  
Apache Corp.
    48,120       4,033,900  
Cabot Oil & Gas Corp.
    25,792       1,831,748  
Chesapeake Energy Corp. (a)
    63,417       1,292,438  
Chevron Corp.
    237,812       28,142,672  
ConocoPhillips (a)
    149,652       9,053,946  
CONSOL Energy, Inc.
    27,510       745,521  
Denbury Resources, Inc.* (a)
    46,917       812,602  
Devon Energy Corp. (a)
    45,840       2,378,179  
EOG Resources, Inc.
    33,374       4,394,688  
EQT Corp.
    18,682       1,482,790  
Exxon Mobil Corp.
    545,292       49,267,132  
Hess Corp.
    36,853       2,450,356  
Kinder Morgan, Inc.
    77,011       2,937,970  
Marathon Oil Corp.
    86,253       2,982,629  
Marathon Petroleum Corp.
    39,759       2,825,274  
Murphy Oil Corp.
    22,215       1,352,671  
Newfield Exploration Co.*
    16,308       389,598  
Noble Energy, Inc. (a)
    43,622       2,619,065  
Occidental Petroleum Corp.
    98,773       8,813,515  
Peabody Energy Corp.
    32,465       475,288  
Phillips 66
    75,616       4,454,539  
Pioneer Natural Resources Co.
    16,424       2,377,374  
QEP Resources, Inc. (a)
    22,210       616,994  
Range Resources Corp. (a)
    19,924       1,540,524  
Southwestern Energy Co.* (a)
    42,945       1,568,781  
Spectra Energy Corp.
    82,791       2,852,978  
Tesoro Corp.
    16,768       877,302  
Valero Energy Corp.
    66,764       2,321,384  
Williams Companies, Inc.
    82,980       2,694,361  
WPX Energy, Inc.* (a)
    25,444       481,909  
              153,362,963  
Financials 16.3%
 
Capital Markets 2.1%
 
Ameriprise Financial, Inc.
    25,067       2,027,419  
Bank of New York Mellon Corp.
    142,744       4,003,969  
BlackRock, Inc.
    15,416       3,959,600  
Charles Schwab Corp. (a)
    135,812       2,883,289  
E*TRADE Financial Corp.* (a)
    32,035       405,563  
Franklin Resources, Inc.
    16,960       2,306,899  
Invesco Ltd. (a)
    54,730       1,740,414  
Legg Mason, Inc. (a)
    13,670       423,907  
Morgan Stanley
    168,526       4,117,090  
Northern Trust Corp. (a)
    26,933       1,559,421  
State Street Corp. (a)
    55,697       3,632,001  
T. Rowe Price Group, Inc.
    31,793       2,325,658  
The Goldman Sachs Group, Inc.
    52,747       7,977,984  
              37,363,214  
Commercial Banks 2.9%
 
BB&T Corp.
    85,237       2,887,829  
Comerica, Inc. (a)
    23,588       939,510  
Fifth Third Bancorp. (a)
    107,840       1,946,512  
Huntington Bancshares, Inc. (a)
    102,531       807,944  
KeyCorp
    112,516       1,242,177  
M&T Bank Corp. (a)
    15,182       1,696,588  
PNC Financial Services Group, Inc.
    64,929       4,734,623  
Regions Financial Corp.
    172,664       1,645,488  
SunTrust Banks, Inc. (a)
    65,168       2,057,354  
U.S. Bancorp. (a)
    226,953       8,204,351  
Wells Fargo & Co.
    603,377       24,901,369  
Zions Bancorp. (a)
    22,659       654,392  
              51,718,137  
Consumer Finance 1.0%
 
American Express Co. (a)
    117,173       8,759,853  
Capital One Financial Corp.
    71,488       4,490,161  
Discover Financial Services
    60,050       2,860,782  
SLM Corp.
    54,025       1,235,012  
              17,345,808  
Diversified Financial Services 3.9%
 
Bank of America Corp.
    1,321,037       16,988,536  
Citigroup, Inc.
    372,946       17,890,220  
CME Group, Inc.
    37,948       2,883,289  
IntercontinentalExchange, Inc.* (a)
    8,795       1,563,399  
JPMorgan Chase & Co.
    463,201       24,452,381  
Leucadia National Corp.
    36,421       954,959  
McGraw-Hill Companies, Inc.
    33,542       1,784,099  
Moody's Corp.
    24,177       1,473,104  
NYSE Euronext
    30,122       1,247,051  
The NASDAQ OMX Group, Inc.
    15,132       496,178  
              69,733,216  
Insurance 4.3%
 
ACE Ltd.
    41,602       3,722,547  
Aflac, Inc. (a)
    57,033       3,314,758  
Allstate Corp.
    57,201       2,752,512  
American International Group, Inc.*
    180,891       8,085,828  
Aon PLC
    37,774       2,430,757  
Assurant, Inc.
    9,539       485,630  
Berkshire Hathaway, Inc. "B"* (a)
    223,649       25,030,796  
Chubb Corp. (a)
    31,930       2,702,875  
Cincinnati Financial Corp. (a)
    17,856       819,590  
Genworth Financial, Inc. "A"*
    61,781       704,921  
Hartford Financial Services Group, Inc. (a)
    54,417       1,682,574  
Lincoln National Corp. (a)
    33,013       1,203,984  
Loews Corp.
    37,884       1,682,050  
Marsh & McLennan Companies, Inc.
    67,547       2,696,476  
MetLife, Inc.
    134,534       6,156,276  
Principal Financial Group, Inc. (a)
    34,568       1,294,572  
Progressive Corp.
    66,907       1,700,776  
Prudential Financial, Inc. (a)
    57,075       4,168,187  
The Travelers Companies, Inc.
    46,032       3,678,877  
Torchmark Corp. (a)
    11,394       742,205  
Unum Group
    32,655       959,077  
XL Group PLC
    35,896       1,088,367  
              77,103,635  
Real Estate Investment Trusts 2.0%
 
American Tower Corp. (REIT)
    48,421       3,542,965  
Apartment Investment & Management Co. "A" (REIT)
    18,457       554,448  
AvalonBay Communities, Inc. (REIT)
    14,673       1,979,534  
Boston Properties, Inc. (REIT)
    18,707       1,973,027  
Equity Residential (REIT)
    38,692       2,246,458  
HCP, Inc. (REIT)
    56,125       2,550,320  
Health Care REIT, Inc. (REIT) (a)
    34,599       2,319,171  
Host Hotels & Resorts, Inc. (REIT) (a)
    90,987       1,534,951  
Kimco Realty Corp. (REIT) (a)
    50,494       1,082,086  
Plum Creek Timber Co., Inc. (REIT) (a)
    19,804       924,253  
Prologis, Inc. (REIT)
    61,224       2,309,369  
Public Storage (REIT)
    17,837       2,734,947  
Simon Property Group, Inc. (REIT)
    38,068       6,011,699  
The Macerich Co. (REIT)
    16,641       1,014,602  
Ventas, Inc. (REIT)
    35,725       2,481,458  
Vornado Realty Trust (REIT)
    21,037       1,742,915  
Weyerhaeuser Co. (REIT)
    67,375       1,919,514  
              36,921,717  
Real Estate Management & Development 0.0%
 
CBRE Group, Inc. "A"*
    38,075       889,432  
Thrifts & Mortgage Finance 0.1%
 
Hudson City Bancorp., Inc.
    56,831       520,572  
People's United Financial, Inc. (a)
    43,023       641,043  
              1,161,615  
Health Care 12.5%
 
Biotechnology 2.0%
 
Alexion Pharmaceuticals, Inc.*
    24,090       2,222,062  
Amgen, Inc.
    91,875       9,064,388  
Biogen Idec, Inc.*
    29,070       6,255,864  
Celgene Corp.*
    51,042       5,967,320  
Gilead Sciences, Inc.* (a)
    186,701       9,560,958  
Regeneron Pharmaceuticals, Inc.*
    9,446       2,124,216  
              35,194,808  
Health Care Equipment & Supplies 2.1%
 
Abbott Laboratories
    191,038       6,663,405  
Baxter International, Inc. (a)
    66,269       4,590,454  
Becton, Dickinson & Co.
    23,985       2,370,437  
Boston Scientific Corp.* (a)
    168,285       1,560,002  
C.R. Bard, Inc.
    9,093       988,227  
CareFusion Corp.*
    26,270       968,049  
Covidien PLC (a)
    57,683       3,624,800  
DENTSPLY International, Inc. (a)
    17,899       733,143  
Edwards Lifesciences Corp.* (a)
    13,539       909,821  
Intuitive Surgical, Inc.* (a)
    4,923       2,493,893  
Medtronic, Inc. (a)
    124,372       6,401,427  
St. Jude Medical, Inc. (a)
    34,743       1,585,323  
Stryker Corp.
    35,026       2,265,482  
Varian Medical Systems, Inc.* (a)
    13,637       919,816  
Zimmer Holdings, Inc. (a)
    20,718       1,552,607  
              37,626,886  
Health Care Providers & Services 2.0%
 
Aetna, Inc.
    46,307       2,942,347  
AmerisourceBergen Corp.
    28,418       1,586,577  
Cardinal Health, Inc.
    41,690       1,967,768  
CIGNA Corp.
    35,216       2,552,808  
DaVita HealthCare Partners, Inc.*
    10,265       1,240,012  
Express Scripts Holding Co.*
    99,945       6,165,607  
Humana, Inc.
    19,181       1,618,493  
Laboratory Corp. of America Holdings* (a)
    11,325       1,133,632  
McKesson Corp.
    27,782       3,181,039  
Patterson Companies, Inc. (a)
    10,332       388,483  
Quest Diagnostics, Inc. (a)
    19,704       1,194,654  
Tenet Healthcare Corp.*
    13,186       607,875  
UnitedHealth Group, Inc. (a)
    124,982       8,183,821  
WellPoint, Inc.
    36,800       3,011,712  
              35,774,828  
Health Care Technology 0.1%
 
Cerner Corp.* (a)
    17,802       1,710,594  
Life Sciences Tools & Services 0.5%
 
Agilent Technologies, Inc.
    41,825       1,788,437  
Life Technologies Corp.*
    21,170       1,566,792  
PerkinElmer, Inc. (a)
    13,540       440,050  
Thermo Fisher Scientific, Inc. (a)
    43,752       3,702,732  
Waters Corp.*
    10,731       1,073,636  
              8,571,647  
Pharmaceuticals 5.8%
 
AbbVie, Inc.
    193,757       8,009,914  
Actavis, Inc.*
    16,062       2,027,346  
Allergan, Inc.
    36,384       3,064,988  
Bristol-Myers Squibb Co.
    200,845       8,975,763  
Eli Lilly & Co.
    121,752       5,980,458  
Forest Laboratories, Inc.*
    29,103       1,193,223  
Hospira, Inc.* (a)
    20,340       779,225  
Johnson & Johnson (a)
    344,322       29,563,487  
Merck & Co., Inc. (a)
    370,330       17,201,829  
Mylan, Inc.*
    46,797       1,452,111  
Perrigo Co. (a)
    10,990       1,329,790  
Pfizer, Inc.
    822,663       23,042,791  
Zoetis, Inc.
    63,608       1,964,836  
              104,585,761  
Industrials 10.0%
 
Aerospace & Defense 2.5%
 
Boeing Co.
    83,964       8,601,272  
General Dynamics Corp. (a)
    40,541       3,175,577  
Honeywell International, Inc.
    96,559       7,660,991  
L-3 Communications Holdings, Inc.
    11,122       953,600  
Lockheed Martin Corp. (a)
    32,375       3,511,393  
Northrop Grumman Corp.
    28,599       2,367,997  
Precision Castparts Corp.
    18,016       4,071,796  
Raytheon Co. (a)
    39,600       2,618,352  
Rockwell Collins, Inc. (a)
    16,660       1,056,411  
Textron, Inc. (a)
    34,105       888,435  
United Technologies Corp.
    103,932       9,659,440  
              44,565,264  
Air Freight & Logistics 0.7%
 
C.H. Robinson Worldwide, Inc. (a)
    19,297       1,086,614  
Expeditors International of Washington, Inc. (a)
    24,955       948,540  
FedEx Corp.
    36,280       3,576,482  
United Parcel Service, Inc. "B"
    87,210       7,541,921  
              13,153,557  
Airlines 0.1%
 
Southwest Airlines Co. (a)
    88,831       1,145,031  
Building Products 0.1%
 
Masco Corp.
    44,832       873,776  
Commercial Services & Supplies 0.5%
 
ADT Corp. (a)
    27,393       1,091,611  
Avery Dennison Corp. (a)
    12,473       533,345  
Cintas Corp. (a)
    12,640       575,626  
Iron Mountain, Inc.
    20,953       557,559  
Pitney Bowes, Inc. (a)
    25,102       368,497  
Republic Services, Inc. (a)
    36,856       1,250,893  
Stericycle, Inc.* (a)
    10,820       1,194,853  
Tyco International Ltd.
    56,958       1,876,766  
Waste Management, Inc.
    54,318       2,190,645  
              9,639,795  
Construction & Engineering 0.2%
 
Fluor Corp. (a)
    20,163       1,195,868  
Jacobs Engineering Group, Inc.*
    16,448       906,778  
Quanta Services, Inc.*
    25,755       681,477  
              2,784,123  
Electrical Equipment 0.6%
 
Eaton Corp. PLC
    58,428       3,845,147  
Emerson Electric Co. (a)
    87,234       4,757,742  
Rockwell Automation, Inc.
    17,141       1,425,103  
Roper Industries, Inc.
    12,264       1,523,434  
              11,551,426  
Industrial Conglomerates 2.4%
 
3M Co.
    77,678       8,494,089  
Danaher Corp. (a)
    71,264       4,511,011  
General Electric Co.
    1,267,508       29,393,511  
              42,398,611  
Machinery 1.7%
 
Caterpillar, Inc. (a)
    80,748       6,660,902  
Cummins, Inc.
    21,862       2,371,153  
Deere & Co. (a)
    47,849       3,887,731  
Dover Corp. (a)
    20,589       1,598,942  
Flowserve Corp. (a)
    17,949       969,425  
Illinois Tool Works, Inc. (a)
    50,946       3,523,935  
Ingersoll-Rand PLC
    34,008       1,888,124  
Joy Global, Inc. (a)
    13,277       644,333  
PACCAR, Inc. (a)
    43,519       2,335,230  
Pall Corp. (a)
    13,971       928,094  
Parker Hannifin Corp.
    18,387       1,754,120  
Pentair Ltd. (Registered)
    25,234       1,455,749  
Snap-on, Inc. (a)
    7,011       626,643  
Stanley Black & Decker, Inc. (a)
    19,619       1,516,549  
Xylem, Inc.
    22,648       610,137  
              30,771,067  
Professional Services 0.1%
 
Dun & Bradstreet Corp. (a)
    5,132       500,114  
Equifax, Inc.
    15,058       887,368  
Robert Half International, Inc.
    17,797       591,394  
              1,978,876  
Road & Rail 0.9%
 
CSX Corp.
    124,443       2,885,833  
Kansas City Southern
    13,663       1,447,731  
Norfolk Southern Corp.
    38,330       2,784,674  
Ryder System, Inc.
    6,207       377,324  
Union Pacific Corp. (a)
    57,188       8,822,965  
              16,318,527  
Trading Companies & Distributors 0.2%
 
Fastenal Co. (a)
    33,265       1,525,200  
W.W. Grainger, Inc. (a)
    7,255       1,829,566  
              3,354,766  
Information Technology 17.4%
 
Communications Equipment 1.9%
 
Cisco Systems, Inc.
    654,987       15,922,734  
F5 Networks, Inc.*
    9,678       665,846  
Harris Corp. (a)
    13,100       645,175  
JDS Uniphase Corp.*
    28,291       406,825  
Juniper Networks, Inc.* (a)
    62,779       1,212,262  
Motorola Solutions, Inc.
    33,090       1,910,286  
QUALCOMM, Inc.
    211,873       12,941,203  
              33,704,331  
Computers & Peripherals 3.7%
 
Apple, Inc.
    115,063       45,574,153  
Dell, Inc.
    181,079       2,417,405  
EMC Corp.
    257,107       6,072,867  
Hewlett-Packard Co.
    236,351       5,861,505  
NetApp, Inc.* (a)
    44,530       1,682,343  
SanDisk Corp.*
    29,767       1,818,764  
Seagate Technology PLC
    39,293       1,761,505  
Western Digital Corp.
    25,722       1,597,079  
              66,785,621  
Electronic Equipment, Instruments & Components 0.4%
 
Amphenol Corp. "A" (a)
    19,633       1,530,196  
Corning, Inc.
    182,276       2,593,788  
FLIR Systems, Inc.
    18,468       498,082  
Jabil Circuit, Inc.
    22,098       450,357  
Molex, Inc. (a)
    17,038       499,895  
TE Connectivity Ltd.
    50,054       2,279,459  
              7,851,777  
Internet Software & Services 2.3%
 
Akamai Technologies, Inc.* (a)
    21,699       923,293  
eBay, Inc.*
    142,843       7,387,840  
Google, Inc. "A"*
    32,928       28,988,823  
VeriSign, Inc.* (a)
    18,951       846,352  
Yahoo!, Inc.*
    116,647       2,929,006  
              41,075,314  
IT Services 3.6%
 
Accenture PLC "A"
    79,310       5,707,148  
Automatic Data Processing, Inc.
    59,541       4,099,993  
Cognizant Technology Solutions Corp. "A"*
    36,607       2,291,964  
Computer Sciences Corp.
    18,623       815,129  
Fidelity National Information Services, Inc.
    36,005       1,542,454  
Fiserv, Inc.*
    16,508       1,442,964  
International Business Machines Corp.
    127,799       24,423,667  
MasterCard, Inc. "A" (a)
    12,831       7,371,410  
Paychex, Inc. (a)
    40,518       1,479,717  
SAIC, Inc. (a)
    34,125       475,361  
Teradata Corp.* (a)
    20,192       1,014,244  
Total System Services, Inc.
    19,401       474,937  
Visa, Inc. "A" (a)
    62,108       11,350,237  
Western Union Co. (a)
    69,169       1,183,482  
              63,672,707  
Office Electronics 0.1%
 
Xerox Corp. (a)
    149,835       1,359,003  
Semiconductors & Semiconductor Equipment 2.0%
 
Advanced Micro Devices, Inc.*
    80,081       326,730  
Altera Corp. (a)
    40,084       1,322,371  
Analog Devices, Inc.
    37,781       1,702,412  
Applied Materials, Inc.
    148,282       2,210,885  
Broadcom Corp. "A"
    64,894       2,190,821  
First Solar, Inc.* (a)
    7,155       320,043  
Intel Corp. (a)
    609,905       14,771,899  
KLA-Tencor Corp.
    20,585       1,147,202  
Lam Research Corp.* (a)
    19,690       873,055  
Linear Technology Corp.
    29,187       1,075,249  
LSI Corp.*
    69,361       495,238  
Microchip Technology, Inc. (a)
    23,858       888,711  
Micron Technology, Inc.*
    127,401       1,825,656  
NVIDIA Corp. (a)
    70,482       988,862  
Teradyne, Inc.* (a)
    24,047       422,506  
Texas Instruments, Inc.
    135,553       4,726,733  
Xilinx, Inc. (a)
    31,691       1,255,281  
              36,543,654  
Software 3.4%
 
Adobe Systems, Inc.*
    61,933       2,821,668  
Autodesk, Inc.* (a)
    28,172       956,158  
BMC Software, Inc.*
    16,066       725,219  
CA, Inc. (a)
    41,025       1,174,546  
Citrix Systems, Inc.*
    22,937       1,383,789  
Electronic Arts, Inc.*
    36,794       845,158  
Intuit, Inc.
    34,010       2,075,630  
Microsoft Corp.
    921,346       31,814,077  
Oracle Corp.
    450,418       13,836,841  
Red Hat, Inc.*
    22,871       1,093,691  
Salesforce.com, Inc.* (a)
    66,888       2,553,784  
Symantec Corp.
    84,196       1,891,884  
              61,172,445  
Materials 3.2%
 
Chemicals 2.4%
 
Air Products & Chemicals, Inc. (a)
    25,695       2,352,891  
Airgas, Inc. (a)
    8,315       793,750  
CF Industries Holdings, Inc.
    7,337       1,258,296  
Dow Chemical Co. (a)
    148,039       4,762,415  
E.I. du Pont de Nemours & Co.
    112,552       5,908,980  
Eastman Chemical Co.
    18,763       1,313,598  
Ecolab, Inc.
    32,262       2,748,400  
FMC Corp. (a)
    16,954       1,035,211  
International Flavors & Fragrances, Inc. (a)
    10,133       761,596  
LyondellBasell Industries NV "A"
    46,272       3,065,983  
Monsanto Co.
    65,288       6,450,454  
PPG Industries, Inc.
    17,329       2,537,139  
Praxair, Inc.
    36,344       4,185,375  
Sigma-Aldrich Corp. (a)
    15,034       1,208,132  
The Mosaic Co.
    33,865       1,822,276  
The Sherwin-Williams Co.
    10,569       1,866,485  
              42,070,981  
Construction Materials 0.0%
 
Vulcan Materials Co. (a)
    16,496       798,571  
Containers & Packaging 0.2%
 
Ball Corp. (a)
    17,690       734,843  
Bemis Co., Inc. (a)
    12,797       500,874  
MeadWestvaco Corp.
    21,669       739,129  
Owens-Illinois, Inc.*
    20,029       556,606  
Sealed Air Corp. (a)
    23,705       567,735  
              3,099,187  
Metals & Mining 0.5%
 
Alcoa, Inc. (a)
    131,299       1,026,758  
Allegheny Technologies, Inc.
    13,163       346,318  
Cliffs Natural Resources, Inc. (a)
    19,767       321,214  
Freeport-McMoRan Copper & Gold, Inc.
    127,231       3,512,848  
Newmont Mining Corp. (a)
    61,497       1,841,835  
Nucor Corp.
    38,947       1,687,184  
United States Steel Corp. (a)
    18,418       322,868  
              9,059,025  
Paper & Forest Products 0.1%
 
International Paper Co.
    54,748       2,425,884  
Telecommunication Services 2.8%
 
Diversified Telecommunication Services 2.5%
 
AT&T, Inc.
    659,637       23,351,150  
CenturyLink, Inc. (a)
    74,577       2,636,297  
Frontier Communications Corp. (a)
    119,779       485,105  
Verizon Communications, Inc. (a)
    350,800       17,659,272  
Windstream Corp. (a)
    72,553       559,384  
              44,691,208  
Wireless Telecommunication Services 0.3%
 
Crown Castle International Corp.*
    36,184       2,619,360  
Sprint Nextel Corp.* (a)
    371,374       2,607,045  
              5,226,405  
Utilities 3.2%
 
Electric Utilities 1.8%
 
American Electric Power Co., Inc.
    60,442       2,706,593  
Duke Energy Corp. (a)
    85,572       5,776,110  
Edison International (a)
    40,366       1,944,027  
Entergy Corp.
    21,627       1,506,969  
Exelon Corp. (a)
    104,379       3,223,223  
FirstEnergy Corp. (a)
    51,500       1,923,010  
NextEra Energy, Inc. (a)
    52,087       4,244,049  
Northeast Utilities
    38,763       1,628,821  
Pepco Holdings, Inc. (a)
    28,416       572,867  
Pinnacle West Capital Corp.
    13,678       758,719  
PPL Corp. (a)
    72,573       2,196,059  
Southern Co. (a)
    106,894       4,717,232  
Xcel Energy, Inc. (a)
    60,433       1,712,671  
              32,910,350  
Gas Utilities 0.1%
 
AGL Resources, Inc.
    14,255       610,969  
ONEOK, Inc. (a)
    25,674       1,060,593  
              1,671,562  
Independent Power Producers & Energy Traders 0.1%
 
AES Corp.
    76,404       916,084  
NRG Energy, Inc. (a)
    40,514       1,081,724  
              1,997,808  
Multi-Utilities 1.2%
 
Ameren Corp.
    29,794       1,026,105  
CenterPoint Energy, Inc. (a)
    53,215       1,250,020  
CMS Energy Corp. (a)
    33,267       903,865  
Consolidated Edison, Inc.
    35,914       2,094,145  
Dominion Resources, Inc. (a)
    70,624       4,012,856  
DTE Energy Co. (a)
    21,513       1,441,586  
Integrys Energy Group, Inc. (a)
    10,088       590,451  
NiSource, Inc.
    39,213       1,123,060  
PG&E Corp. (a)
    54,173       2,477,331  
Public Service Enterprise Group, Inc.
    62,145       2,029,656  
SCANA Corp.
    16,895       829,545  
Sempra Energy (a)
    27,578       2,254,777  
TECO Energy, Inc. (a)
    25,780       443,158  
Wisconsin Energy Corp.
    28,677       1,175,470  
              21,652,025  
Total Common Stocks (Cost $1,055,246,143)
      1,754,675,287  
 

   
Principal Amount ($)
   
Value ($)
 
       
Government & Agency Obligation 0.3%
 
U.S. Treasury Obligation
 
U.S. Treasury Bill, 0.085%**, 10/17/2013 (b) (Cost $5,213,670)
    5,215,000       5,214,176  
 

   
Shares
   
Value ($)
 
       
Securities Lending Collateral 19.8%
 
Daily Assets Fund Institutional, 0.10% (c) (d) (Cost $354,450,479)
    354,450,479       354,450,479  
   
Cash Equivalents 1.7%
 
Central Cash Management Fund, 0.07% (c) (Cost $31,138,340)
    31,138,340       31,138,340  
 

   
% of Net Assets
   
Value ($)
 
       
Total Investment Portfolio (Cost $1,446,048,632)
    119.7       2,145,478,282  
Other Assets and Liabilities, Net (a)
    (19.7 )     (352,649,791 )
Net Assets
    100.0       1,792,828,491  
 
* Non-income producing security.
 
** Annualized yield at time of purchase; not a coupon rate.
 
The cost for federal income tax purposes was $1,558,998,737. At June 30, 2013, net unrealized appreciation for all securities based on tax cost was $586,479,545. This consisted of aggregate gross unrealized appreciation for all securities in which there was an excess of value over tax cost of $786,137,830 and aggregate gross unrealized depreciation for all securities in which there was an excess of tax cost over value of $199,658,285.
 
(a) All or a portion of these securities were on loan. In addition, included in other assets and liabilities, net is a pending sale, that is also on loan (see Notes to Financial Statements). The value of securities loaned at June 30, 2013 amounted to $345,727,558, which is 19.3% of net assets.
 
(b) At June 30, 2013, this security has been pledged, in whole or in part, to cover initial margin requirements for open futures contracts.
 
(c) Affiliated fund managed by Deutsche Investment Management Americas Inc. The rate shown is the annualized seven-day yield at period end.
 
(d) Represents collateral held in connection with securities lending. Income earned by the Fund is net of borrower rebates.
 
REIT: Real Estate Investment Trust
 
At June 30, 2013, open futures contracts purchased were as follows:
Futures
Currency
Expiration Date
 
Contracts
   
Notional Value ($)
   
Unrealized Depreciation ($)
 
S&P 500 Index
USD
9/20/2013
    426       34,065,090       (14,363 )
 

Currency Abbreviation
USD United States Dollar
 
For information on the Portfolio's policy and additional disclosures regarding futures contracts, please refer to Note B in the accompanying Notes to Financial Statements.
 
Fair Value Measurements
 
Various inputs are used in determining the value of the Portfolio's investments. These inputs are summarized in three broad levels. Level 1 includes quoted prices in active markets for identical securities. Level 2 includes other significant observable inputs (including quoted prices for similar securities, interest rates, prepayment speeds and credit risk). Level 3 includes significant unobservable inputs (including the Portfolio's own assumptions in determining the fair value of investments). The inputs or methodology used for valuing securities are not necessarily an indication of the risk associated with investing in those securities.
 
The following is a summary of the inputs used as of June 30, 2013 in valuing the Portfolio's investments. For information on the Portfolio's policy regarding the valuation of investments, please refer to the Security Valuation section of Note A in the accompanying Notes to Financial Statements.
Assets
 
Level 1
   
Level 2
   
Level 3
   
Total
 
   
Common Stocks (e)
  $ 1,754,675,287     $     $     $ 1,754,675,287  
Government & Agency Obligation
          5,214,176             5,214,176  
Short-Term Investments (e)
    385,588,819                   385,588,819  
Total
  $ 2,140,264,106     $ 5,214,176     $     $ 2,145,478,282  
Liabilities
 
Derivatives (f)
 
Futures Contracts
  $ (14,363 )   $     $     $ (14,363 )
Total
  $ (14,363 )   $     $     $ (14,363 )
 
There have been no transfers between fair value measurement levels during the period ended June 30, 2013.
 
(e) See Investment Portfolio for additional detailed categorizations.
 
(f) Derivatives include unrealized appreciation (depreciation) on futures contracts.
 
The accompanying notes are an integral part of the financial statements.
 
Statement of Assets and Liabilities
as of June 30, 2013 (Unaudited)
 
Assets
 
Investments:
Investments in non-affiliated securities, at value (cost $1,060,459,813) — including $345,727,558 of securities loaned
  $ 1,759,889,463  
Investment in Daily Assets Fund Institutional (cost $354,450,479)*
    354,450,479  
Investment in Central Cash Management Fund (cost $31,138,340)
    31,138,340  
Total investments in securities, at value (cost $1,446,048,632)
    2,145,478,282  
Cash
    24,692  
Receivable for investments sold
    227,999  
Dividends receivable
    2,181,246  
Interest receivable
    11,570  
Foreign taxes recoverable
    1,132  
Other assets
    13,945  
Total assets
    2,147,938,866  
Liabilities
 
Payable upon return of securities loaned
    354,450,479  
Payable for investments purchased
    333,094  
Payable for variation margin on futures contracts
    155,708  
Accrued management fee
    74,432  
Accrued Trustees' fees
    3,949  
Other accrued expenses and payables
    92,713  
Total liabilities
    355,110,375  
Net assets, at value
  $ 1,792,828,491  
 
* Represents collateral on securities loaned.
 
The accompanying notes are an integral part of the financial statements.
 
Statement of Operations
for the six months ended June 30, 2013 (Unaudited)
 
Investment Income
 
Income:
Dividends (net of foreign taxes withheld of $40,072)
  $ 19,709,741  
Interest
    3,054  
Income distributions — Central Cash Management Fund
    13,409  
Securities lending income, including income from Daily Assets Fund Institutional, net of borrower rebates
    122,831  
Total income
    19,849,035  
Expenses:
Management fee
    470,587  
Administration fee
    282,352  
Custodian fee
    21,669  
Professional fees
    61,834  
Reports to shareholders
    3,380  
Trustees' fees and expenses
    40,802  
Insurance
    19,490  
Other
    20,435  
Total expenses
    920,549  
Net investment income (loss)
    18,928,486  
Realized and Unrealized Gain (Loss)
 
Net realized gain (loss) from:
Investments
    (3,144,317 )
Futures
    3,993,493  
In-kind redemptions
    140,683,935  
      141,533,111  
Change in net unrealized appreciation (depreciation) on:
Investments
    95,904,306  
Futures
    103,076  
      96,007,382  
Net gain (loss)
    237,540,493  
Net increase (decrease) in net assets resulting from operations
  $ 256,468,979  
 
The accompanying notes are an integral part of the financial statements.
 
Statement of Changes in Net Assets
Increase (Decrease) in Net Assets
 
Six Months Ended June 30, 2013 (Unaudited)
   
Year Ended December 31, 2012
 
Operations:
Net investment income (loss)
  $ 18,928,486     $ 48,819,634  
Net realized gain (loss)
    141,533,111       227,772,878  
Change in net unrealized appreciation (depreciation)
    96,007,382       34,024,480  
Net increase (decrease) in net assets resulting from operations
    256,468,979       310,616,992  
Capital transactions in shares of beneficial interest:
Proceeds from capital invested
    227,902,860       692,606,058  
Value of capital withdrawn
    (791,848,976 )     (1,003,954,398 )
Net increase (decrease) in net assets from capital transactions in shares of beneficial interest
    (563,946,116 )     (311,348,340 )
Increase (decrease) in net assets
    (307,477,137 )     (731,348 )
Net assets at beginning of period
    2,100,305,628       2,101,036,976  
Net assets at end of period
  $ 1,792,828,491     $ 2,100,305,628  
 
The accompanying notes are an integral part of the financial statements.
 
Financial Highlights
         
Years Ended December 31,
 
   
Six Months Ended 6/30/13 (Unaudited)
   
2012
   
2011
   
2010
   
2009
   
2008
 
Ratios to Average Net Assets and Supplemental Data
 
Net assets, end of period ($ millions)
    1,793       2,100       2,101       2,524       2,479       2,153  
Ratio of expenses before expense reductions (%)
    .10 *     .09       .10       .10       .09       .10  
Ratio of expenses after expense reductions (%)
    .10 *     .09       .10       .06       .05       .05  
Ratio of net investment income (%)
    2.01 *     2.24       1.99       2.03       2.38       2.29  
Portfolio turnover rate (%)
    1 c**     4       3       5       9 c     6  
Total investment return (%) b
    13.81 **     15.87       2.09       15.12 a     26.54 a     (37.01 ) a
a Total investment return would have been lower had certain expenses not been reduced.
b Total investment return for the Portfolio was derived from the performance of the Institutional Class of DWS Equity 500 Index Fund.
c Excludes portfolio securities delivered as a result of processing redemption in-kind transactions.
* Annualized
** Not annualized
 
 
Notes to Financial Statements (Unaudited)
 
A. Organization and Significant Accounting Policies
 
DWS Equity 500 Index Portfolio (the "Portfolio") is registered under the Investment Company Act of 1940, as amended (the "1940 Act"), as a diversified open-end management investment company organized as a New York trust.
 
The Portfolio is a master fund; a master/feeder fund structure is one in which a fund (a "feeder fund"), instead of investing directly in a portfolio of securities, invests most or all of its investment assets in a separate registered investment company (the "master fund") with substantially the same investment objective and policies as the feeder fund. Such a structure permits the pooling of assets of two or more feeder funds, preserving separate identities or distribution channels at the feeder fund level. The Portfolio may have several feeder funds, including affiliated DWS feeder funds, with a significant ownership percentage of the Portfolio's net assets. Investment activities of these feeder funds could have a material impact on the Portfolio. As of June 30, 2013, DWS S&P 500 Index Fund and DWS Equity 500 Index Fund owned approximately 45% and 55%, respectively, of the Portfolio.
 
The Portfolio's financial statements are prepared in accordance with accounting principles generally accepted in the United States of America which require the use of management estimates. Actual results could differ from those estimates. The policies described below are followed consistently by the Portfolio in the preparation of its financial statements.
 
Security Valuation. Investments are stated at value determined as of the close of regular trading on the New York Stock Exchange on each day the exchange is open for trading.
 
Various inputs are used in determining the value of the Portfolio's investments. These inputs are summarized in three broad levels. Level 1 includes quoted prices in active markets for identical securities. Level 2 includes other significant observable inputs (including quoted prices for similar securities, interest rates, prepayment speeds, and credit risk). Level 3 includes significant unobservable inputs (including the Portfolio's own assumptions in determining the fair value of investments). The inputs or methodology used for valuing securities are not necessarily an indication of the risk associated with investing in those securities.
 
Equity securities are valued at the most recent sale price or official closing price reported on the exchange (U.S. or foreign) or over-the-counter market on which they trade and are categorized as Level 1 securities. Securities for which no sales are reported are valued at the calculated mean between the most recent bid and asked quotations on the relevant market or, if a mean cannot be determined, at the most recent bid quotation.
 
Debt securities are valued at prices supplied by independent pricing services approved by the Fund's Board. If the pricing services are unable to provide valuations, securities are valued at the most recent bid quotation or evaluated price, as applicable, obtained from one or more broker-dealers. Such services may use various pricing techniques which take into account appropriate factors such as yield, quality, coupon rate, maturity, type of issue, trading characteristics and other data, as well as broker quotes. These securities are generally categorized as Level 2.
 
Money market instruments purchased with an original or remaining maturity of sixty days or less, maturing at par, are valued at amortized cost, which approximates value, and are categorized as Level 2. Investments in open-end investment companies are valued at their net asset value each business day and are categorized as Level 1.
 
Futures contracts are generally valued at the settlement prices established each day on the exchange on which they are traded and are categorized as Level 1.
 
Securities and other assets for which market quotations are not readily available or for which the above valuation procedures are deemed not to reflect fair value are valued in a manner that is intended to reflect their fair value as determined in accordance with procedures approved by the Board and are generally categorized as Level 3. In accordance with the Portfolio's valuation procedures, factors used in determining value may include, but are not limited to, the type of the security; the size of the holding; the initial cost of the security; the existence of any contractual restrictions on the security's disposition; the price and extent of public trading in similar securities of the issuer or of comparable companies; quotations or evaluated prices from broker-dealers and/or pricing services; information obtained from the issuer, analysts, and/or the appropriate stock exchange (for exchange-traded securities); an analysis of the company's or issuer's financial statements; an evaluation of the forces that influence the issuer and the market(s) in which the security is purchased and sold and with respect to debt securities; the maturity, coupon, creditworthiness, currency denomination and the movement of the market in which the security is normally traded. The value determined under these procedures may differ from published values for the same securities.
 
Securities Lending. Brown Brothers Harriman & Co., as lending agent, lends securities of the Fund to certain financial institutions under the terms of the Security Lending Agreement. The Portfolio retains the benefits of owning the securities it has loaned and continues to receive interest and dividends generated by the securities and to participate in any changes in their market value. The Portfolio requires the borrowers of the securities to maintain collateral with the Portfolio consisting of either cash or liquid, unencumbered assets having a value at least equal to the value of the securities loaned. When the collateral falls below specified amounts, the lending agent will use its best efforts to obtain additional collateral on the next business day to meet required amounts under the security lending agreement. The Portfolio may invest the cash collateral into a joint trading account in an affiliated money market fund pursuant to Exemptive Orders issued by the SEC. The Portfolio receives compensation for lending its securities either in the form of fees or by earning interest on invested cash collateral net of borrower rebates and fees paid to a lending agent. Either the Portfolio or the borrower may terminate the loan. There may be risks of delay and costs in recovery of securities or even loss of rights in the collateral should the borrower of the securities fail financially. If the Fund is not able to recover securities lent, the Fund may sell the collateral and purchase a replacement investment in the market, incurring the risk that the value of the replacement security is greater than the value of the collateral. The Portfolio is also subject to all investment risks associated with the reinvestment of any cash collateral received, including, but not limited to, interest rate, credit and liquidity risk associated with such investments.
 
As of June 30, 2013, the Fund had securities on loan with a gross value of $345,727,558. The value of the related collateral, $354,450,479, exceeded the value of the securities loaned at period end.
 
Federal Income Taxes. The Portfolio is considered a partnership under the Internal Revenue Code, as amended. Therefore, no federal income tax provision is necessary.
 
It is intended that the Portfolio's assets, income and distributions will be managed in such a way that an investor in the Portfolio will be able to satisfy the requirements of Subchapter M of the Code, assuming that the investor invested all of its assets in the Portfolio.
 
The Portfolio has reviewed the tax positions for the open tax years as of December 31, 2012 and has determined that no provision for income tax is required in the Portfolio's financial statements. The Portfolio's federal tax returns for the prior three fiscal years remain open subject to examination by the Internal Revenue Service.
 
Contingencies. In the normal course of business, the Portfolio may enter into contracts with service providers that contain general indemnification clauses. The Portfolio's maximum exposure under these arrangements is unknown as this would involve future claims that may be made against the Portfolio that have not yet been made. However, based on experience, the Portfolio expects the risk of loss to be remote.
 
Other. Investment transactions are accounted for on a trade date plus one basis for daily net asset value calculations. However, for financial reporting purposes, investment transactions are reported on trade date. Interest income is recorded on the accrual basis. Dividend income is recorded on the ex-dividend date. Realized gains and losses from investment transactions are recorded on an identified cost basis and may include proceeds from litigation.
 
The Portfolio makes a daily allocation of its net investment income and realized and unrealized gains and losses from securities, futures and foreign currency transactions to its investors in proportion to their investment in the Portfolio.
 
B. Derivative Instruments
 
Futures Contracts. A futures contract is an agreement between a buyer or seller and an established futures exchange or its clearinghouse in which the buyer or seller agrees to take or make a delivery of a specific amount of a financial instrument at a specified price on a specific date (settlement date). For the six months ended June 30, 2013, the Portfolio invested in futures contracts to keep cash on hand to meet shareholder redemptions or other needs while maintaining exposure to the stock market.
 
Upon entering into a futures contract, the Portfolio is required to deposit with a financial intermediary cash or securities ("initial margin") in an amount equal to a certain percentage of the face value indicated in the futures contract. Subsequent payments ("variation margin") are made or received by the Portfolio dependent upon the daily fluctuations in the value and are recorded for financial reporting purposes as unrealized gains or losses by the Portfolio. Gains or losses are realized when the contract expires or is closed. Since all futures contracts are exchange traded, counterparty risk is minimized as the exchange's clearinghouse acts as the counterparty, and guarantees the futures against default.
 
Certain risks may arise upon entering into futures contracts, including the risk that an illiquid market will limit the Portfolio's ability to close out a futures contract prior to the settlement date and the risk that the futures contract is not well correlated with the security, index or currency to which it relates. Risk of loss may exceed amounts disclosed in the Statement of Assets and Liabilities.
 
A summary of the open futures contracts as of June 30, 2013 is included in a table following the Portfolio's Investment Portfolio. For the six months ended June 30, 2013, the investment in futures contracts purchased had a total notional value generally indicative of a range from approximately $24,222,000 to $42,603,000.
 
The following table summarizes the value of the Portfolio's derivative instruments held as of June 30, 2013 presented by primary underlying risk exposure:
Liability Derivative
 
Futures Contracts
 
Equity Contracts (a)
  $ (14,363 )
 
(a) Includes cumulative depreciation of futures contracts as disclosed in the Investment Portfolio. Unsettled variation margin is disclosed separately within the Statement of Assets and Liabilities.
 
Additionally, the amount of unrealized and realized gains and losses on derivative instruments recognized in Portfolio earnings during the six months ended June 30, 2013 and the related location in the accompanying Statement of Operations is summarized in the following tables by primary underlying risk exposure:
Realized Gain (Loss)
 
Futures Contracts
 
Equity Contracts (a)
  $ 3,993,493  
 
The above derivative is located in the following Statement of Operations account:
 
(a) Net realized gain (loss) from futures
 
Change in Net Unrealized Appreciation (Depreciation)
 
Futures Contracts
 
Equity Contracts (a)
  $ 103,076  
 
The above derivative is located in the following Statement of Operations account:
 
(a) Change in net unrealized appreciation (depreciation) on futures
 
C. Purchases and Sales of Securities
 
During the six months ended June 30, 2013, purchases and sales of investment securities (excluding short-term investments and in-kind redemptions) aggregated $12,431,236 and $138,869,423, respectively.
 
D. Related Parties
 
Deutsche Investment Management Americas Inc. ("DIMA" or the "Advisor"), an indirect, wholly owned subsidiary of Deutsche Bank AG, serves as the investment manager to the Portfolio.
 
Management Agreement. Under its Investment Management Agreement with the Portfolio, the Advisor determines the securities, instruments and other contracts relating to investments to be purchased, sold or entered into by the Portfolio or delegates such responsibility to the Portfolio's sub-advisor. Northern Trust Investments, Inc. ("NTI") serves as sub-advisor to the Portfolio and is paid by the Advisor for its services. NTI is responsible for the day-to-day management of the Portfolio.
 
The investment management fee payable under the Investment Management Agreement is equal to an annualized rate of 0.05% of the Portfolio's average daily net assets, computed and accrued daily and payable monthly.
 
Administration Fee. Pursuant to an Administrative Services Agreement, DIMA provides most administrative services to the Portfolio. For all services provided under the Administrative Services Agreement, the Portfolio pays the Advisor an annual fee ("Administration Fee") of 0.03% of the Portfolio's average daily net assets, computed and accrued daily and payable monthly. For the six months ended June 30, 2013, the Administration Fee was $282,352, of which $44,659 is unpaid.
 
Filing Service Fee. Under an agreement with DIMA, DIMA is compensated for providing certain regulatory filing services to the Portfolio. For the six months ended June 30, 2013, the amount charged to the Portfolio by DIMA included in the Statement of Operations under "reports to shareholders" aggregated $1,389, all of which is unpaid.
 
Trustees' Fees and Expenses. The Portfolio paid retainer fees to each Trustee not affiliated with the Advisor, plus specified amounts to the Board Chairperson and Vice Chairperson and to each committee Chairperson.
 
Affiliated Cash Management Vehicles. The Fund may invest uninvested cash balances in Central Cash Management Fund and DWS Variable NAV Money Fund, affiliated money market funds which are managed by the Advisor. Each affiliated money market fund seeks to provide a high level of current income consistent with liquidity and the preservation of capital. Each affiliated money market fund is managed in accordance with Rule 2a-7 under the Investment Company Act of 1940, which governs the quality, maturity, diversity and liquidity of instruments in which a money market fund may invest. Central Cash Management Fund seeks to maintain a stable net asset value, and DWS Variable NAV Money Fund maintains a floating net asset value. The Fund indirectly bears its proportionate share of the expenses of each affiliated money market fund in which it invests. Central Cash Management Fund does not pay the Advisor an investment management fee. To the extent that DWS Variable NAV Money Fund pays an investment management fee to the Advisor, the Advisor will waive an amount of the investment management fee payable to the Advisor by the Fund equal to the amount of the investment management fee payable on the Fund's assets invested in DWS Variable NAV Money Fund.
 
E. Line of Credit
 
The Portfolio and other affiliated funds (the "Participants") share in a $375 million revolving credit facility provided by a syndication of banks. The Portfolio may borrow for temporary or emergency purposes, including the meeting of redemption requests that otherwise might require the untimely disposition of securities. The Participants are charged an annual commitment fee which is allocated based on net assets, among each of the Participants. Interest is calculated at a rate per annum equal to the sum of the Federal Funds Rate plus 1.25 percent plus if LIBOR exceeds the Federal Funds Rate the amount of such excess. The Portfolio may borrow up to a maximum of 33 percent of its net assets under the agreement. The Fund had no outstanding loans at June 30, 2013.
 
F. In-Kind Redemptions
 
In certain circumstances, the Portfolio may distribute portfolio securities rather than cash as payments for a redemption of a feeder fund's shares (in-kind redemption). For financial reporting purposes, the Portfolio recognizes a gain on in-kind redemptions to the extent the value of the distributed securities exceeds their costs; the Portfolio recognizes a loss if cost exceeds value. Gains and losses realized on in-kind redemptions are allocated in proportion to each feeder fund's investment in the Portfolio. During the six months ended June 30, 2013, the Portfolio allocated $140,683,935 of net gain attributable to an in-kind redemption on DWS Equity 500 Index Fund.
 
Summary of Management Fee Evaluation by Independent Fee Consultant
 
September 17, 2012
 
Pursuant to an Order entered into by Deutsche Investment Management Americas and affiliates (collectively, "DeAM") with the Attorney General of New York, I, Thomas H. Mack, have been appointed the Independent Fee Consultant for the DWS Funds (formerly the DWS Scudder Funds). My duties include preparing an annual written evaluation of the management fees DeAM charges the Funds, considering among other factors the management fees charged by other mutual fund companies for like services, management fees DeAM charges other clients for like services, DeAM's costs of supplying services under the management agreements and related profit margins, possible economies of scale if a Fund grows larger, and the nature and quality of DeAM's services, including fund performance. This report summarizes my evaluation for 2012, including my qualifications, the evaluation process for each of the DWS Funds, consideration of certain complex-level factors, and my conclusions. I served in substantially the same capacity in 2007, 2008, 2009, 2010 and 2011.
 
Qualifications
 
For more than 35 years I have served in various professional capacities within the investment management business. I have held investment analysis and advisory positions, including securities analyst, portfolio strategist and director of investment policy with a large investment firm. I have also performed business management functions, including business development, financial management and marketing research and analysis.
 
Since 1991, I have been an independent consultant within the asset management industry. I have provided services to over 125 client organizations, including investment managers, mutual fund boards, product distributors and related organizations. Over the past ten years I have completed a number of assignments for mutual fund boards, specifically including assisting boards with management contract renewal.
 
I hold a Master of Business Administration degree, with highest honors, from Harvard University and Master of Science and Bachelor of Science (highest honors) degrees from the University of California at Berkeley. I am an independent director and audit committee financial expert for two closed-end mutual funds and have served in various leadership and financial oversight capacities with non-profit organizations.
 
Evaluation of Fees for each DWS Fund
 
My work focused primarily on evaluating, fund-by-fund, the fees charged to each of the 103 mutual fund portfolios in the DWS Fund family. For each Fund, I considered each of the key factors mentioned above, as well as any other relevant information. In doing so I worked closely with the Funds' Independent Directors in their annual contract renewal process, as well as in their approval of contracts for several new funds (documented separately).
 
In evaluating each Fund's fees, I reviewed comprehensive materials provided by or on behalf of DeAM, including expense information prepared by Lipper Analytical, comparative performance information, profitability data, manager histories, and other materials. I also accessed certain additional information from the Lipper and Morningstar databases and drew on my industry knowledge and experience.
 
To facilitate evaluating this considerable body of information, I prepared for each Fund a document summarizing the key data elements in each area as well as additional analytics discussed below. This made it possible to consider each key data element in the context of the others.
 
In the course of contract renewal, DeAM agreed to implement a number of fee and expense adjustments requested by the Independent Directors which will favorably impact future fees and expenses, and my evaluation includes the effects of these changes.
 
Fees and Expenses Compared with Other Funds
 
The competitive fee and expense evaluation for each fund focused on two primary comparisons:
 
The Fund's contractual management fee (the advisory fee plus the administration fee where applicable) compared with those of a group of typically 12-15 funds in the same Lipper investment category (e.g. Large Capitalization Growth) having similar distribution arrangements and being of similar size.
 
The Fund's total expenses compared with a broader universe of funds from the same Lipper investment category and having similar distribution arrangements.
 
These two comparisons provide a view of not only the level of the fee compared with funds of similar scale but also the total expense the Fund bears for all the services it receives, in comparison with the investment choices available in the Fund's investment category and distribution channel. The principal figure-of-merit used in these comparisons was the subject Fund's percentile ranking against peers.
 
DeAM's Fees for Similar Services to Others
 
DeAM provided management fee schedules for all of its US domiciled fund and non-fund investment management accounts in any of the investment categories where there is a DWS Fund. These similar products included the other DWS Funds, non-fund pooled accounts, institutional accounts and sub-advisory accounts. Using this information, I calculated for each Fund the fee that would be charged to each similar product, at the subject Fund's asset level.
 
Evaluating information regarding non-fund products is difficult because there are varying levels of services required for different types of accounts, with mutual funds generally requiring considerably more regulatory and administrative types of service as well as having more frequent cash flows than other types of accounts. Also, while mutual fund fees for similar fund products can be expected to be similar, there will be some differences due to different pricing conditions in different distribution channels (e.g. retail funds versus those used in variable insurance products), differences in underlying investment processes and other factors.
 
Costs and Profit Margins
 
DeAM provided a detailed profitability analysis for each Fund. After making some adjustments so that the presentation would be more comparable to the available industry figures, I reviewed profit margins from investment management alone, from investment management plus other fund services (excluding distribution) provided to the Funds by DeAM (principally shareholder services), and DeAM profits from all sources, including distribution. A later section comments on overall profitability.
 
Economies of Scale
 
Economies of scale — an expected decline in management cost per dollar of fund assets as fund assets grow — are very rarely quantified and documented because of inherent difficulties in collecting and analyzing relevant data. However, in virtually every investment category that I reviewed, larger funds tend to have lower fees and lower total expenses than smaller funds. To see how each DWS Fund compares with this industry observation, I reviewed:
 
The trend in Fund assets over the last five years and the accompanying trend in total expenses. This shows if the Fund has grown and, if so, whether total expense (management fees as well as other expenses) have declined as a percent of assets.
 
Whether the Fund has break-points in its management fee schedule, the extent of the fee reduction built into the schedule and the asset levels where the breaks take effect, and in the case of a sub-advised Fund how the Fund's break-points compare with those of the sub-advisory fee schedule.
 
How the Fund's contractual fee schedule compares with trends in the industry data. To accomplish this, I constructed a chart showing how actual latest-fiscal-year contractual fees of the Fund and of other similar funds relate to average fund assets, with the subject Fund's contractual fee schedule superimposed.
 
Quality of Service — Performance
 
The quality-of-service evaluation focused on investment performance, which is the principal result of the investment management service. Each Fund's performance was reviewed over the past 1, 3, 5 and 10 years, as applicable, and compared with that of other funds in the same investment category and with a suitable market index.
 
In addition, I calculated and reviewed risk-adjusted returns relative to an index of similar mutual funds' returns and a suitable market index. The risk-adjusted returns analysis provides a way of determining the extent to which the Fund's return comparisons are mainly the product of investment value-added (or lack thereof) or alternatively taking considerably more or less risk than is typical in its investment category.
 
I also received and considered the history of portfolio manager changes for each Fund, as this provided an important context for evaluating the performance results.
 
Complex-Level Considerations
 
While this evaluation was conducted mainly at the individual fund level, there are some issues relating to the reasonableness of fees that can alternatively be considered across the whole fund complex:
 
I reviewed DeAM's profitability analysis for all DWS Funds, with a view toward determining if the allocation procedures used were reasonable and how profit levels compared with public data for other investment managers.
 
I considered whether DeAM and affiliates receive any significant ancillary or "fallout" benefits that should be considered in interpreting the direct profitability results. These would be situations where serving as the investment manager of the Funds is beneficial to another part of the Deutsche Bank organization.
 
I considered how aggregated DWS Fund expenses had varied over the years, by asset class and in the context of trends in asset levels.
 
I considered how aggregated DWS Fund performance measures relative to appropriate peers had varied by asset class and over time.
 
I reviewed the structure of the DeAM organization, trends in staffing levels, and information on compensation of investment management and other professionals compared with industry data.
 
Findings
 
Based on the process and analysis discussed above, which included reviewing a wide range of information from management and external data sources and considering among other factors the fees DeAM charges other clients, the fees charged by other fund managers, DeAM's costs and profits associated with managing the Funds, economies of scale, possible fall-out benefits, and the nature and quality of services provided, in my opinion the management fees charged the DWS Funds are reasonable.
 
Thomas H. Mack
 
President, Thomas H. Mack & Co., Inc.
 
Account Management Resources
 
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Kansas City, MO 64121-9151
Proxy Voting
 
The fund's policies and procedures for voting proxies for portfolio securities and information about how the fund voted proxies related to its portfolio securities during the 12-month period ended June 30 are available on our Web site — www.dws-investments.com (click on "proxy voting"at the bottom of the page) — or on the SEC's Web site — www.sec.gov. To obtain a written copy of the fund's policies and procedures without charge, upon request, call us toll free at (800) 728-3337.
Portfolio Holdings
 
Following the fund's fiscal first and third quarter-end, a complete portfolio holdings listing is filed with the SEC on Form N-Q. This form will be available on the SEC's Web site at www.sec.gov, and it also may be reviewed and copied at the SEC's Public Reference Room in Washington, D.C. Information on the operation of the SEC's Public Reference Room may be obtained by calling (800) SEC-0330. The fund's portfolio holdings are also posted on www.dws-investments.com from time to time. Please see the fund's current prospectus for more information.
Principal Underwriter
 
If you have questions, comments or complaints, contact:
DWS Investments Distributors, Inc.
222 South Riverside Plaza
Chicago, IL 60606-5808
(800) 728-3337
Investment Management
 
Deutsche Investment Management Americas Inc. ("DIMA" or the "Advisor"), which is part of Deutsche Asset & Wealth Management, is the investment advisor for the fund. DIMA and its predecessors have more than 80 years of experience managing mutual funds and DIMA provides a full range of investment advisory services to both institutional and retail clients.
DIMA is an indirect, wholly owned subsidiary of Deutsche Bank AG. Deutsche Bank AG is a major global banking institution engaged in a wide variety of financial services, including investment management, retail, private and commercial banking, investment banking and insurance.
DWS Investments is the retail brand name in the U.S. for the asset management activities of Deutsche Bank AG and DIMA. As such, DWS is committed to delivering the investing expertise, insight and resources of this global investment platform to American investors.
 

   
Class S
Institutional Class
Nasdaq Symbol
 
BTIEX
BTIIX
CUSIP Number
 
23339C 305
23339C 206
Fund Number
 
815
565
 
Privacy Statement
FACTS
What Does Deutsche Asset & Wealth Management Do With Your Personal Information?
Why?
Financial companies choose how they share your personal information. Federal law gives consumers the right to limit some but not all sharing. Federal law also requires us to tell you how we collect, share and protect your personal information. Please read this notice carefully to understand what we do.
What?
The types of personal information we collect and share can include:
Social Security number
• Account balances
Purchase and transaction history
Bank account information
Contact information such as mailing address, e-mail address and telephone number
How?
All financial companies need to share customers' personal information to run their everyday business. In the section below, we list the reasons financial companies can share their customers' personal information, the reasons Deutsche Asset & Wealth Management chooses to share and whether you can limit this sharing.
 

Reasons we can share your personal information
Does Deutsche Asset & Wealth Management share?
Can you limit this sharing?
For our everyday business purposes — such as to process your transactions, maintain your account(s), respond to court orders or legal investigations
Yes
No
For our marketing purposes — to offer our products and services to you
Yes
No
For joint marketing with other financial companies
No
We do not share
For our affiliates' everyday business purposes — information about your transactions and experiences
No
We do not share
For our affiliates' everyday business purposes — information about your creditworthiness
No
We do not share
For non-affiliates to market to you
No
We do not share
 

Questions?
Call (800) 728-3337 or e-mail us at dws-investments.info@dws.com
 

Who we are
Who is providing this notice?
DWS Investments Distributors, Inc.; Deutsche Investment Management Americas Inc.; DeAM Investor Services, Inc.; DWS Trust Company; the DWS Funds
What we do
How does Deutsche Asset & Wealth Management protect my personal information?
To protect your personal information from unauthorized access and use, we use security measures that comply with federal law. These measures include computer safeguards and secured files and buildings.
How does Deutsche Asset & Wealth Management collect my personal information?
We collect your personal information, for example. When you:
open an account
give us your contact information
provide bank account information for ACH or wire transactions
tell us where to send money
seek advice about your investments
Why can't I limit all sharing?
Federal law gives you the right to limit only
sharing for affiliates' everyday business purposes — information about your creditworthiness
affiliates from using your information to market to you
sharing for nonaffiliates to market to you
State laws and individual companies may give you additional rights to limit sharing.
Definitions
Affiliates
Companies related by common ownership or control. They can be financial or non-financial companies. Our affiliates include financial companies with the DWS or Deutsche Bank ("DB") name, such as DB AG Frankfurt and DB Alex Brown.
Non-affiliates
Companies not related by common ownership or control. They can be financial and non-financial companies.
Non-affiliates we share with include account service providers, service quality monitoring services, mailing service providers and verification services to help in the fight against money laundering and fraud.
Joint marketing
A formal agreement between non-affiliated financial companies that together market financial products or services to you. Deutsche Asset & Wealth Management does not jointly market.
 

 
Rev. 09/2012
   
ITEM 2.
CODE OF ETHICS
   
 
Not applicable.
   
ITEM 3.
AUDIT COMMITTEE FINANCIAL EXPERT
   
 
Not applicable
   
ITEM 4.
PRINCIPAL ACCOUNTANT FEES AND SERVICES
   
 
Not applicable
   
ITEM 5.
AUDIT COMMITTEE OF LISTED REGISTRANTS
   
 
Not applicable
   
ITEM 6.
SCHEDULE OF INVESTMENTS
   
 
Not applicable
   
ITEM 7.
DISCLOSURE OF PROXY VOTING POLICIES AND PROCEDURES FOR CLOSED-END MANAGEMENT INVESTMENT COMPANIES
   
 
Not applicable
   
ITEM 8.
PORTFOLIO MANAGERS OF CLOSED-END MANAGEMENT INVESTMENT COMPANIES
   
 
Not applicable
   
ITEM 9.
PURCHASES OF EQUITY SECURITIES BY CLOSED-END MANAGEMENT INVESTMENT COMPANY AND AFFILIATED PURCHASERS
   
 
Not applicable
   
ITEM 10.
SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS
   
 
There were no material changes to the procedures by which shareholders may recommend nominees to the Fund’s Board. The primary function of the Nominating and Governance Committee is to identify and recommend individuals for membership on the Board and oversee the administration of the Board Governance Guidelines. Shareholders may recommend candidates for Board positions by forwarding their correspondence by U.S. mail or courier service to Kenneth C. Froewiss, Independent Chairman, DWS Mutual Funds, P.O. Box 78, Short Hills, NJ 07078.
   
ITEM 11.
CONTROLS AND PROCEDURES
   
 
(a)
The Chief Executive and Financial Officers concluded that the Registrant’s Disclosure Controls and Procedures are effective based on the evaluation of the Disclosure Controls and Procedures as of a date within 90 days of the filing date of this report.
   
 
(b)
There have been no changes in the registrant’s internal control over financial reporting that occurred during the second fiscal quarter of the period covered by this report that has materially affected, or is reasonably likely to materially affect, the registrant’s internal controls over financial reporting.
   
ITEM 12.
EXHIBITS
   
 
(a)(1)
Certification pursuant to Rule 30a-2(a) under the Investment Company Act of 1940 (17 CFR 270.30a-2(a)) is filed and attached hereto as Exhibit 99.CERT.
   
 
(b)
Certification pursuant to Rule 30a-2(b) under the Investment Company Act of 1940 (17 CFR 270.30a-2(b)) is furnished and attached hereto as Exhibit 99.906CERT.


Form N-CSRS Item F

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Registrant:
DWS Equity 500 Index Fund, a series of DWS Institutional Funds
   
   
By:
/s/ W. Douglas Beck
W. Douglas Beck
President
   
Date:
August 29, 2013

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.


By:
/s/ W. Douglas Beck
W. Douglas Beck
President
   
Date:
August 29, 2013
   
   
   
By:
/s/Paul Schubert
Paul Schubert
Chief Financial Officer and Treasurer
   
Date:
August 29, 2013

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