As filed with the Securities and Exchange Commission on May 13, 2013
File No. 033-58041
File No. 811-07257
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM N-1A
REGISTRATION STATEMENT UNDER THE
SECURITIES ACT OF 1933
POST-EFFECTIVE AMENDMENT NO. 72
x
and
REGISTRATION STATEMENT UNDER THE
INVESTMENT COMPANY ACT OF 1940
AMENDMENT NO. 73
x
SEI INSTITUTIONAL INVESTMENTS TRUST
(Exact Name of Registrant as Specified in Charter)
SEI Investments Company
One Freedom Valley Drive
Oaks, Pennsylvania 19456
(Address of Principal Executive Offices)
(610) 676-1000
Timothy D. Barto
SEI Investments Company
One Freedom Valley Drive
Oaks, Pennsylvania 19456
(Name and Address of Agent for Service)
Copy to:
Timothy W. Levin, Esquire
Morgan, Lewis & Bockius LLP
1701 Market Street
Philadelphia, PA 19103
Title of Securities Being Registered. . .Units of Beneficial Interest
It is proposed that this filing become effective (check appropriate box)
x
immediately upon filing pursuant to paragraph (b)
o
on [date] pursuant to paragraph (b)
o
60 days after filing pursuant to paragraph (a)(1)
o
on [date] pursuant to paragraph (a)(1)
o
75 days after filing pursuant to paragraph (a)(2)
o
on [date] pursuant to paragraph (a)(2) of Rule 485.
If appropriate, check the following box:
o
This post-effective Amendment designates a new effective date for a previously filed Post-Effective Amendment.