Pioneer High Income Fund, Inc.
Schedule of Investments  |  December 31, 2023 
 
Ticker Symbol: PHT
Schedule of Investments  |  12/31/23
(unaudited) 
Principal
Amount
USD ($) 		          Value
  UNAFFILIATED ISSUERS — 143.9%  
  Senior Secured Floating Rate
Loan Interests — 1.7% of Net Assets*(a) 		 
  Auto Parts & Equipment — 0.6%  
1,386,319 First Brands Group LLC, First Lien 2021 Term Loan, 10.881% (Term SOFR + 500 bps), 3/30/27 $   1,378,233
  Total Auto Parts & Equipment    $1,378,233
  Electric-Generation — 0.3%  
719,579 Generation Bridge Northeast LLC, Term Loan B, 9.606% (Term SOFR + 425 bps), 8/22/29 $     724,076
  Total Electric-Generation      $724,076
  Metal Processors & Fabrication — 0.5%  
1,114,350 Grinding Media, Inc. (Molycop, Ltd.), First Lien Initial Term Loan, 9.684% (Term SOFR + 400 bps), 10/12/28 $   1,108,779
  Total Metal Processors & Fabrication    $1,108,779
  Physical Practice Management — 0.3%  
934,787 Team Health Holdings, Inc., Extended Term Loan, 10.633% (Term SOFR + 525 bps), 3/2/27 $     716,865
  Total Physical Practice Management      $716,865
  Total Senior Secured Floating Rate Loan Interests
(Cost $4,045,721) 		   $3,927,953
Shares            
  Common Stocks — 0.4% of Net Assets  
  Chemicals — 0.0%†  
22 LyondellBasell Industries NV, Class A $       2,092
  Total Chemicals        $2,092
  Oil, Gas & Consumable Fuels — 0.0%†  
21(b) Amplify Energy Corp. $         125
8,027(b) Petroquest Energy, Inc.          405
  Total Oil, Gas & Consumable Fuels          $530
1Pioneer High Income Fund, Inc. |  | 12/31/23
Shares           Value
  Passenger Airlines — 0.4%  
57,203(b)+ Grupo Aeromexico SAB de CV $     919,640
  Total Passenger Airlines      $919,640
  Total Common Stocks
(Cost $1,646,575) 		     $922,262
Principal
Amount
USD ($) 		           
  Asset Backed Securities — 0.6% of
Net Assets 		 
1,500,000 Santander Bank Auto Credit-Linked Notes, Series 2023-B, Class F, 12.24%, 12/15/33 (144A) $   1,506,207
  Total Asset Backed Securities
(Cost $1,500,000) 		   $1,506,207
  Collateralized Mortgage
Obligations—2.3% of Net Assets 		 
710,000(a) Connecticut Avenue Securities Trust, Series 2021-R01, Class 1B2, 11.337% (SOFR30A + 600 bps), 10/25/41 (144A) $     725,767
120,000(a) Fannie Mae Connecticut Avenue Securities, Series 2021-R02, Class 2B2, 11.537% (SOFR30A + 620 bps), 11/25/41 (144A)       123,406
430,000(a) Freddie Mac STACR REMIC Trust, Series 2021-DNA7, Class B2, 13.137% (SOFR30A + 780 bps), 11/25/41 (144A)       454,847
450,000(a) Freddie Mac STACR REMIC Trust, Series 2021-HQA3, Class B2, 11.587% (SOFR30A + 625 bps), 9/25/41 (144A)       453,739
610,000(a) Freddie Mac STACR REMIC Trust, Series 2022-DNA2, Class B2, 13.837% (SOFR30A + 850 bps), 2/25/42 (144A)       654,267
1,370,000(a) Freddie Mac STACR Trust, Series 2019-DNA3, Class B2, 13.602% (SOFR30A + 826 bps), 7/25/49 (144A)     1,542,748
1,350,000(a) STACR Trust, Series 2018-HRP2, Class B2, 15.952% (SOFR30A + 1,061 bps), 2/25/47 (144A)    1,604,520
  Total Collateralized Mortgage Obligations
(Cost $5,237,594) 		   $5,559,294
Pioneer High Income Fund, Inc. |  | 12/31/232
Schedule of Investments  |  12/31/23
(unaudited) (continued)
Principal
Amount
USD ($) 		          Value
  Commercial Mortgage-Backed
Securities—3.1% of Net Assets 		 
1,460,000(a) Capital Funding Mortgage Trust, Series 2021-19, Class B, 20.55% (1 Month Term SOFR + 1,521 bps), 10/27/24 (144A) $   1,450,281
1,076,496(c) FREMF Mortgage Trust, Series 2019-KJ24, Class B, 7.60%, 10/25/27 (144A)       993,590
1,500,000(a) FREMF Mortgage Trust, Series 2019-KS12, Class C, 12.345% (SOFR30A + 701 bps), 8/25/29     1,432,672
222,712(a) FREMF Mortgage Trust, Series 2020-KF74, Class C, 11.695% (SOFR30A + 636 bps), 1/25/27 (144A)       211,736
343,929(a) FREMF Mortgage Trust, Series 2020-KF83, Class C, 14.445% (SOFR30A + 911 bps), 7/25/30 (144A)       324,649
1,169,388(a) Med Trust, Series 2021-MDLN, Class G, 10.726% (1 Month Term SOFR + 536 bps), 11/15/38 (144A)     1,118,616
2,500,000 Wells Fargo Commercial Mortgage Trust, Series 2015-C28, Class E, 3.00%, 5/15/48 (144A)    1,741,650
  Total Commercial Mortgage-Backed Securities
(Cost $7,724,931) 		   $7,273,194
  Convertible Corporate Bonds —
2.5% of Net Assets 		 
  Banks — 0.0%†  
IDR1,422,679,000 PT Bakrie & Brothers Tbk, 4/28/24 $       9,240
  Total Banks        $9,240
  Chemicals — 1.8%  
4,000,000(d) Hercules LLC, 6.50%, 6/30/29 $   4,242,581
  Total Chemicals    $4,242,581
  Entertainment — 0.7%  
1,455,000(e) DraftKings Holdings, Inc., 3/15/28 $   1,166,182
449,000 IMAX Corp., 0.50%, 4/1/26      398,488
  Total Entertainment    $1,564,670
  Total Convertible Corporate Bonds
(Cost $4,919,448) 		   $5,816,491
3Pioneer High Income Fund, Inc. |  | 12/31/23
Principal
Amount
USD ($) 		          Value
  Corporate Bonds — 114.6% of Net
Assets 		 
  Advertising — 2.7%  
2,090,000 Clear Channel Outdoor Holdings, Inc., 7.50%, 6/1/29 (144A) $   1,737,773
2,010,000 Stagwell Global LLC, 5.625%, 8/15/29 (144A)     1,848,733
3,000,000 Summer BC Bidco B LLC, 5.50%, 10/31/26 (144A)    2,808,000
  Total Advertising    $6,394,506
  Aerospace & Defense — 1.9%  
2,150,000 Bombardier, Inc., 6.00%, 2/15/28 (144A) $   2,094,692
745,000 Bombardier, Inc., 7.125%, 6/15/26 (144A)       741,522
740,000 Spirit AeroSystems, Inc., 9.375%, 11/30/29 (144A)       809,763
740,000 Triumph Group, Inc., 9.00%, 3/15/28 (144A)      786,875
  Total Aerospace & Defense    $4,432,852
  Agriculture — 1.0%  
2,795,000 Frigorifico Concepcion S.A., 7.70%, 7/21/28 (144A) $   2,359,679
  Total Agriculture    $2,359,679
  Airlines — 5.3%  
420,000 Allegiant Travel Co., 7.25%, 8/15/27 (144A) $     410,945
355,000 Delta Air Lines, Inc., 7.375%, 1/15/26       366,981
3,255,000 Grupo Aeromexico SAB de CV, 8.50%, 3/17/27 (144A)     3,141,817
330,000 Latam Airlines Group S.A., 13.375%, 10/15/29 (144A)       377,859
966,000 Mileage Plus Holdings LLC/Mileage Plus Intellectual Property Assets, Ltd., 6.50%, 6/20/27 (144A)       968,742
2,460,000 Pegasus Hava Tasimaciligi AS, 9.25%, 4/30/26 (144A)     2,502,312
EUR1,600,000 Transportes Aereos Portugueses S.A., 5.625%, 12/2/24 (144A)     1,745,602
2,360,000 VistaJet Malta Finance Plc/Vista Management Holding, Inc., 6.375%, 2/1/30 (144A)     1,648,157
1,470,000 VistaJet Malta Finance Plc/Vista Management Holding, Inc., 9.50%, 6/1/28 (144A)    1,244,065
  Total Airlines   $12,406,480
Pioneer High Income Fund, Inc. |  | 12/31/234
Schedule of Investments  |  12/31/23
(unaudited) (continued)
Principal
Amount
USD ($) 		          Value
  Apparel — 0.4%  
870,000 Hanesbrands, Inc., 9.00%, 2/15/31 (144A) $     852,205
  Total Apparel      $852,205
  Auto Manufacturers — 0.4%  
1,035,000 JB Poindexter & Co., Inc., 8.75%, 12/15/31 (144A) $   1,055,700
  Total Auto Manufacturers    $1,055,700
  Auto Parts & Equipment — 0.6%  
1,285,000 Adient Global Holdings, Ltd., 8.25%, 4/15/31 (144A) $   1,360,660
  Total Auto Parts & Equipment    $1,360,660
  Banks — 1.9%  
600,000(c)(f) Bank of America Corp., 6.50% (3 Month Term SOFR + 444 bps) $     597,092
1,175,000 Freedom Mortgage Corp., 12.25%, 10/1/30 (144A)     1,289,865
675,000(c)(f) Intesa Sanpaolo S.p.A., 7.70% (5 Year USD Swap Rate + 546 bps) (144A)       663,260
1,240,000(c) Toronto-Dominion Bank, 8.125% (5 Year CMT Index + 408 bps), 10/31/82     1,290,578
545,000(c)(f) UBS Group AG, 9.25% (5 Year CMT Index + 476 bps) (144A)      604,005
  Total Banks    $4,444,800
  Biotechnology — 0.3%  
EUR745,000 Cidron Aida Finco S.a.r.l., 5.00%, 4/1/28 (144A) $     790,971
  Total Biotechnology      $790,971
  Building Materials — 2.1%  
1,991,000 AmeriTex HoldCo Intermediate LLC, 10.25%, 10/15/28 (144A) $   2,040,775
2,211,000 Cornerstone Building Brands, Inc., 6.125%, 1/15/29 (144A)     1,813,020
1,140,000 Knife River Corp., 7.75%, 5/1/31 (144A)    1,213,804
  Total Building Materials    $5,067,599
  Chemicals — 8.1%  
1,355,000 LSF11 A5 HoldCo LLC, 6.625%, 10/15/29 (144A) $   1,145,836
EUR885,000 Lune Holdings S.a.r.l., 5.625%, 11/15/28 (144A)       792,224
2,250,000 LYB Finance Co. BV, 8.10%, 3/15/27 (144A)     2,422,190
5Pioneer High Income Fund, Inc. |  | 12/31/23
Principal
Amount
USD ($) 		          Value
  Chemicals — (continued)  
2,831,000 Mativ Holdings, Inc., 6.875%, 10/1/26 (144A) $   2,715,585
470,000 Olin Corp., 9.50%, 6/1/25 (144A)       484,505
EUR1,355,000 Olympus Water US Holding Corp., 9.625%, 11/15/28 (144A)     1,600,562
2,320,000 Olympus Water US Holding Corp., 9.75%, 11/15/28 (144A)     2,462,432
2,175,000 Rain Carbon, Inc., 12.25%, 9/1/29 (144A)     2,126,063
2,500,000 SCIL IV LLC/SCIL USA Holdings LLC, 5.375%, 11/1/26 (144A)     2,399,830
EUR1,005,000 SCIL IV LLC/SCIL USA Holdings LLC, 9.50%, 7/15/28 (144A)     1,181,585
2,000,000 Tronox, Inc., 4.625%, 3/15/29 (144A)    1,771,596
  Total Chemicals   $19,102,408
  Commercial Services — 6.7%  
1,645,000 Allied Universal Holdco LLC/Allied Universal Finance Corp., 6.00%, 6/1/29 (144A) $   1,341,159
1,905,000 Allied Universal Holdco LLC/Allied Universal Finance Corp., 9.75%, 7/15/27 (144A)     1,866,703
790,000(g) Atento Luxco 1 S.A., 8.00%, 2/10/26 (144A)            79
2,116,000 Garda World Security Corp., 6.00%, 6/1/29 (144A)     1,896,735
2,059,000 Garda World Security Corp., 9.50%, 11/1/27 (144A)     2,075,779
319,000 Herc Holdings, Inc., 5.50%, 7/15/27 (144A)       314,954
1,470,000 Neptune Bidco US, Inc., 9.29%, 4/15/29 (144A)     1,370,772
915,000 NESCO Holdings II, Inc., 5.50%, 4/15/29 (144A)       846,000
4,155,000 Prime Security Services Borrower LLC/Prime Finance, Inc., 6.25%, 1/15/28 (144A)     4,130,770
1,093,000 Sotheby's, 7.375%, 10/15/27 (144A)     1,054,085
862,000 Verscend Escrow Corp., 9.75%, 8/15/26 (144A)      868,058
  Total Commercial Services   $15,765,094
  Computers — 0.4%  
980,000 NCR Voyix Corp., 5.00%, 10/1/28 (144A) $     926,363
  Total Computers      $926,363
Pioneer High Income Fund, Inc. |  | 12/31/236
Schedule of Investments  |  12/31/23
(unaudited) (continued)
Principal
Amount
USD ($) 		          Value
  Distribution/Wholesale — 1.6%  
2,460,000 Dealer Tire LLC/DT Issuer LLC, 8.00%, 2/1/28 (144A) $   2,435,400
1,325,000 Windsor Holdings III LLC, 8.50%, 6/15/30 (144A)    1,384,662
  Total Distribution/Wholesale    $3,820,062
  Diversified Financial Services — 12.6%  
3,500,000(c)(f) Air Lease Corp., 4.125% (5 Year CMT Index + 315 bps) $   2,715,834
2,150,000 ASG Finance Designated Activity Co., 7.875%, 12/3/24 (144A)     2,080,125
1,307,695(h) Avation Capital S.A., 8.25% (9.00% PIK or 8.25% Cash), 10/31/26 (144A)     1,108,272
4,055,000 Bread Financial Holdings, Inc., 7.00%, 1/15/26 (144A)     4,029,575
140,000(g) Credito Real SAB de CV SOFOM ER, 8.00%, 1/21/28 (144A)        15,050
1,500,000(g) Credito Real SAB de CV SOFOM ER, 9.50%, 2/7/26 (144A)       161,250
EUR480,000 Garfunkelux Holdco 3 S.A., 6.75%, 11/1/25 (144A)       418,109
GBP820,000 Garfunkelux Holdco 3 S.A., 7.75%, 11/1/25 (144A)       799,797
350,000 GGAM Finance, Ltd., 7.75%, 5/15/26 (144A)       354,375
1,805,000 GGAM Finance, Ltd., 8.00%, 6/15/28 (144A)     1,854,638
2,225,479(h) Global Aircraft Leasing Co., Ltd., 6.50% (7.25% PIK or 6.50% Cash), 9/15/24 (144A)     2,091,950
2,900,000 Jefferies Finance LLC/JFIN Co.-Issuer Corp., 5.00%, 8/15/28 (144A)     2,595,730
845,000 Nationstar Mortgage Holdings, Inc., 6.00%, 1/15/27 (144A)       838,663
1,210,000 OneMain Finance Corp., 7.875%, 3/15/30     1,245,539
2,320,000 OneMain Finance Corp., 9.00%, 1/15/29     2,452,771
365,000 PennyMac Financial Services, Inc., 7.875%, 12/15/29 (144A)       375,719
755,000 PHH Mortgage Corp., 7.875%, 3/15/26 (144A)       676,177
3,415,000 Provident Funding Associates LP/PFG Finance Corp., 6.375%, 6/15/25 (144A)     3,133,262
7Pioneer High Income Fund, Inc. |  | 12/31/23
Principal
Amount
USD ($) 		          Value
  Diversified Financial Services — (continued)  
1,051,000 United Wholesale Mortgage LLC, 5.50%, 4/15/29 (144A) $     994,992
1,860,000 United Wholesale Mortgage LLC, 5.75%, 6/15/27 (144A)    1,823,005
  Total Diversified Financial Services   $29,764,833
  Electric — 1.0%  
412,000 Cemig Geracao e Transmissao S.A., 9.25%, 12/5/24 (144A) $     412,865
676,000 NRG Energy, Inc., 6.625%, 1/15/27       677,454
82,381 NSG Holdings LLC/NSG Holdings, Inc., 7.75%, 12/15/25 (144A)        81,660
1,045,000 Talen Energy Supply LLC, 8.625%, 6/1/30 (144A)     1,110,346
6,000 Vistra Operations Co. LLC, 5.625%, 2/15/27 (144A)        5,919
  Total Electric    $2,288,244
  Electrical Components & Equipments — 1.6%  
2,600,000 Energizer Holdings, Inc., 6.50%, 12/31/27 (144A) $   2,600,003
750,000 WESCO Distribution, Inc., 7.125%, 6/15/25 (144A)       755,476
520,000 WESCO Distribution, Inc., 7.25%, 6/15/28 (144A)      534,469
  Total Electrical Components & Equipments    $3,889,948
  Energy-Alternate Sources — 0.1%  
0(h) SCC Power Plc, 4.00% (4.00% PIK or 4.00% Cash), 5/17/32 (144A) $          —
381,881(h) SCC Power Plc, 8.00% (4.00% PIK or 4.00% Cash or 8.00% Cash), 12/31/28 (144A)      170,510
  Total Energy-Alternate Sources      $170,510
  Entertainment — 3.4%  
395,000 International Game Technology Plc, 6.25%, 1/15/27 (144A) $     400,863
208,000 International Game Technology Plc, 6.50%, 2/15/25 (144A)       208,216
1,910,000 Light & Wonder International, Inc., 7.00%, 5/15/28 (144A)     1,929,437
1,910,000 Light & Wonder International, Inc., 7.25%, 11/15/29 (144A)     1,955,668
EUR755,000 Lottomatica S.p.A., 9.75%, 9/30/27 (144A)       901,411
Pioneer High Income Fund, Inc. |  | 12/31/238
Schedule of Investments  |  12/31/23
(unaudited) (continued)
Principal
Amount
USD ($) 		          Value
  Entertainment — (continued)  
EUR730,000 Lottomatica S.p.A./Roma, 7.125%, 6/1/28 (144A) $     848,595
1,880,000 Mohegan Tribal Gaming Authority, 8.00%, 2/1/26 (144A)    1,774,250
  Total Entertainment    $8,018,440
  Environmental Control — 0.3%  
766,000 Tervita Corp., 11.00%, 12/1/25 (144A) $     804,300
  Total Environmental Control      $804,300
  Food — 0.2%  
531,000 Albertsons Cos., Inc./Safeway, Inc./New Albertsons LP/Albertsons LLC, 7.50%, 3/15/26 (144A) $     540,865
  Total Food      $540,865
  Healthcare-Services — 3.1%  
1,014,000 Auna SAA, 10.00%, 12/15/29 (144A) $     973,440
580,000 CHS/Community Health Systems, Inc., 5.625%, 3/15/27 (144A)       538,897
265,000 CHS/Community Health Systems, Inc., 6.00%, 1/15/29 (144A)       238,535
385,000 LifePoint Health, Inc., 5.375%, 1/15/29 (144A)       284,691
2,640,000 Prime Healthcare Services, Inc., 7.25%, 11/1/25 (144A)     2,574,000
1,406,000 Surgery Center Holdings, Inc., 10.00%, 4/15/27 (144A)     1,420,060
1,645,000 US Acute Care Solutions LLC, 6.375%, 3/1/26 (144A)    1,374,496
  Total Healthcare-Services    $7,404,119
  Home Builders — 1.7%  
475,000 Beazer Homes USA, Inc., 6.75%, 3/15/25 $     472,625
1,155,000 Beazer Homes USA, Inc., 7.25%, 10/15/29     1,164,925
2,285,000 LGI Homes, Inc., 8.75%, 12/15/28 (144A)    2,430,669
  Total Home Builders    $4,068,219
  Household Products/Wares — 0.8%  
2,050,000 Spectrum Brands, Inc., 3.875%, 3/15/31 (144A) $   1,865,500
  Total Household Products/Wares    $1,865,500
  Insurance — 5.3%  
3,800,000 Hanover Insurance Group, Inc., 7.625%, 10/15/25 $   3,934,105
9Pioneer High Income Fund, Inc. |  | 12/31/23
Principal
Amount
USD ($) 		          Value
  Insurance — (continued)  
3,075,000(c) Liberty Mutual Group, Inc., 10.75% (3 Month Term SOFR + 738 bps), 6/15/58 (144A) $   3,922,532
3,000,000 Liberty Mutual Insurance Co., 7.697%, 10/15/97 (144A)     3,284,654
1,100,000 MetLife, Inc., 10.75%, 8/1/39    1,470,725
  Total Insurance   $12,612,016
  Internet — 0.1%  
205,000 Expedia Group, Inc., 6.25%, 5/1/25 (144A) $     206,963
  Total Internet      $206,963
  Iron & Steel — 1.6%  
1,855,000 Carpenter Technology Corp., 7.625%, 3/15/30 $   1,912,840
2,235,000 TMS International Corp., 6.25%, 4/15/29 (144A)    1,843,875
  Total Iron & Steel    $3,756,715
  Leisure Time — 4.8%  
215,000 Carnival Corp., 7.625%, 3/1/26 (144A) $     218,887
EUR280,000 Carnival Corp., 7.625%, 3/1/26 (144A)       313,433
235,000 Carnival Holdings Bermuda, Ltd., 10.375%, 5/1/28 (144A)       255,778
EUR731,000 Carnival Plc, 1.00%, 10/28/29       578,207
1,295,000 NCL Corp., Ltd., 5.875%, 3/15/26 (144A)     1,265,419
2,435,000 NCL Corp., Ltd., 7.75%, 2/15/29 (144A)     2,449,742
965,000 NCL Corp., Ltd., 8.125%, 1/15/29 (144A)     1,008,022
360,000 NCL Finance, Ltd., 6.125%, 3/15/28 (144A)       344,604
745,000 Royal Caribbean Cruises, Ltd., 5.50%, 4/1/28 (144A)       735,508
1,360,000 Royal Caribbean Cruises, Ltd., 11.625%, 8/15/27 (144A)     1,479,910
2,790,000 Viking Cruises, Ltd., 6.25%, 5/15/25 (144A)    2,782,485
  Total Leisure Time   $11,431,995
  Lodging — 0.3%  
725,000 Travel + Leisure Co., 6.625%, 7/31/26 (144A) $     731,348
  Total Lodging      $731,348
  Media — 3.8%  
2,500,000 CCO Holdings LLC/CCO Holdings Capital Corp., 4.75%, 2/1/32 (144A) $   2,204,900
2,200,000 CSC Holdings LLC, 4.625%, 12/1/30 (144A)     1,324,665
1,925,000 CSC Holdings LLC, 5.00%, 11/15/31 (144A)     1,164,625
Pioneer High Income Fund, Inc. |  | 12/31/2310
Schedule of Investments  |  12/31/23
(unaudited) (continued)
Principal
Amount
USD ($) 		          Value
  Media — (continued)  
1,057,000 Gray Television, Inc., 7.00%, 5/15/27 (144A) $   1,004,678
3,530,000 McGraw-Hill Education, Inc., 8.00%, 8/1/29 (144A)    3,282,900
  Total Media    $8,981,768
  Metal Fabricate/Hardware — 0.5%  
1,185,000 Park-Ohio Industries, Inc., 6.625%, 4/15/27 $   1,096,125
  Total Metal Fabricate/Hardware    $1,096,125
  Mining — 2.4%  
1,665,000 Coeur Mining, Inc., 5.125%, 2/15/29 (144A) $   1,532,000
375,000 First Quantum Minerals, Ltd., 6.875%, 3/1/26 (144A)       335,676
705,000 First Quantum Minerals, Ltd., 6.875%, 10/15/27 (144A)       599,141
2,840,000 First Quantum Minerals, Ltd., 8.625%, 6/1/31 (144A)     2,406,900
692,000 Hudbay Minerals, Inc., 6.125%, 4/1/29 (144A)      678,491
  Total Mining    $5,552,208
  Miscellaneous Manufacturing — 1.3%  
2,880,000 Trinity Industries, Inc., 7.75%, 7/15/28 (144A) $   2,975,273
  Total Miscellaneous Manufacturing    $2,975,273
  Oil & Gas — 15.3%  
2,430,000 Aethon United BR LP/Aethon United Finance Corp., 8.25%, 2/15/26 (144A) $   2,442,150
1,105,000 Ascent Resources Utica Holdings LLC/ARU Finance Corp., 5.875%, 6/30/29 (144A)     1,028,040
2,140,000 Baytex Energy Corp., 8.50%, 4/30/30 (144A)     2,214,707
4,000,000 Baytex Energy Corp., 8.75%, 4/1/27 (144A)     4,132,584
755,000 Borr IHC, Ltd./Borr Finance LLC, 10.00%, 11/15/28 (144A)       785,200
555,000 Borr IHC, Ltd./Borr Finance LLC, 10.375%, 11/15/30 (144A)       571,650
180,000 Cenovus Energy, Inc., 6.75%, 11/15/39       195,972
925,000 CITGO Petroleum Corp., 8.375%, 1/15/29 (144A)       951,205
1,225,000 Civitas Resources, Inc., 8.375%, 7/1/28 (144A)     1,278,833
830,000 Civitas Resources, Inc., 8.625%, 11/1/30 (144A)       880,399
1,225,000 Civitas Resources, Inc., 8.75%, 7/1/31 (144A)     1,304,070
830,000 Hilcorp Energy I LP/Hilcorp Finance Co., 6.00%, 2/1/31 (144A)       800,029
11Pioneer High Income Fund, Inc. |  | 12/31/23
Principal
Amount
USD ($) 		          Value
  Oil & Gas — (continued)  
833,000 International Petroleum Corp., 7.25%, 2/1/27 (144A) $     773,026
870,000 Kosmos Energy, Ltd., 7.75%, 5/1/27 (144A)       810,629
1,010,000 MEG Energy Corp., 5.875%, 2/1/29 (144A)       981,359
1,535,000 MEG Energy Corp., 7.125%, 2/1/27 (144A)     1,559,919
750,000 Murphy Oil Corp., 6.375%, 7/15/28       753,411
1,109,000 Nabors Industries, Ltd., 7.50%, 1/15/28 (144A)       959,007
2,000,000 Neptune Energy Bondco Plc, 6.625%, 5/15/25 (144A)     1,981,971
2,010,000 Occidental Petroleum Corp., 4.40%, 4/15/46     1,636,341
692,000 Petroleos Mexicanos, 6.70%, 2/16/32       574,207
579,000 Precision Drilling Corp., 6.875%, 1/15/29 (144A)       558,347
1,065,000 Seadrill Finance, Ltd., 8.375%, 8/1/30 (144A)     1,111,146
2,265,000 Shelf Drilling Holdings, Ltd., 9.625%, 4/15/29 (144A)     2,216,446
885,000 Southwestern Energy Co., 4.75%, 2/1/32       818,813
285,000 Transocean Titan Financing, Ltd., 8.375%, 2/1/28 (144A)       295,684
2,075,000 Tullow Oil Plc, 10.25%, 5/15/26 (144A)     1,851,419
1,705,000 Valaris, Ltd., 8.375%, 4/30/30 (144A)     1,746,841
1,000,000 YPF S.A., 6.95%, 7/21/27 (144A)      894,744
  Total Oil & Gas   $36,108,149
  Oil & Gas Services — 2.1%  
385,000 Archrock Partners LP/Archrock Partners Finance Corp., 6.25%, 4/1/28 (144A) $     379,225
2,583,000 Archrock Partners LP/Archrock Partners Finance Corp., 6.875%, 4/1/27 (144A)     2,589,458
1,445,000 Enerflex, Ltd., 9.00%, 10/15/27 (144A)     1,393,924
703,000 USA Compression Partners LP/USA Compression Finance Corp., 6.875%, 9/1/27      694,667
  Total Oil & Gas Services    $5,057,274
  Packaging & Containers — 0.6%  
1,355,000 Owens-Brockway Glass Container, Inc., 7.25%, 5/15/31 (144A) $   1,373,821
  Total Packaging & Containers    $1,373,821
  Pharmaceuticals — 2.6%  
2,750,000 Owens & Minor, Inc., 6.625%, 4/1/30 (144A) $   2,625,735
2,365,000 P&L Development LLC/PLD Finance Corp., 7.75%, 11/15/25 (144A)     1,921,563
579,000 Par Pharmaceutical, Inc., 7.50%, 4/1/27 (144A)       370,560
Pioneer High Income Fund, Inc. |  | 12/31/2312
Schedule of Investments  |  12/31/23
(unaudited) (continued)
Principal
Amount
USD ($) 		          Value
  Pharmaceuticals — (continued)  
1,095,000 Teva Pharmaceutical Finance Netherlands III BV, 7.875%, 9/15/29 $   1,180,148
1,300,000+ Tricida, Inc., 5/15/27           —
  Total Pharmaceuticals    $6,098,006
  Pipelines — 7.1%  
1,737,466 Acu Petroleo Luxembourg S.a.r.l., 7.50%, 1/13/32 (144A) $   1,648,062
910,000 DCP Midstream Operating LP, 5.60%, 4/1/44       894,471
1,210,000 Delek Logistics Partners LP/Delek Logistics Finance Corp., 6.75%, 5/15/25     1,201,881
1,060,000 Delek Logistics Partners LP/Delek Logistics Finance Corp., 7.125%, 6/1/28 (144A)     1,001,224
1,524,000(a) Energy Transfer LP, 8.656% (3 Month Term SOFR + 328 bps), 11/1/66     1,271,836
1,965,000(c)(f) Energy Transfer LP, 7.125% (5 Year CMT Index + 531 bps)     1,810,705
248,000 EnLink Midstream Partners LP, 5.05%, 4/1/45       205,220
270,000 EnLink Midstream Partners LP, 5.45%, 6/1/47       235,575
717,000 EnLink Midstream Partners LP, 5.60%, 4/1/44       624,022
770,000 Genesis Energy LP/Genesis Energy Finance Corp., 8.00%, 1/15/27       782,763
421,000 Global Partners LP/GLP Finance Corp., 7.00%, 8/1/27       411,574
1,515,000 Harvest Midstream I LP, 7.50%, 9/1/28 (144A)     1,506,031
1,150,000 NuStar Logistics LP, 6.375%, 10/1/30     1,152,035
215,000 Venture Global LNG, Inc., 8.125%, 6/1/28 (144A)       217,128
1,355,000 Venture Global LNG, Inc., 8.375%, 6/1/31 (144A)     1,354,299
505,000 Venture Global LNG, Inc., 9.50%, 2/1/29 (144A)       534,374
1,801,000 Williams Cos., Inc., 5.75%, 6/24/44    1,814,364
  Total Pipelines   $16,665,564
  REITs — 1.3%  
2,275,000 MPT Operating Partnership LP/MPT Finance Corp., 3.50%, 3/15/31 $   1,422,392
230,000 Uniti Group LP/Uniti Fiber Holdings, Inc./CSL Capital LLC, 6.00%, 1/15/30 (144A)       160,749
1,555,000 Uniti Group LP/Uniti Group Finance, Inc./CSL Capital LLC, 10.50%, 2/15/28 (144A)    1,576,467
  Total REITs    $3,159,608
13Pioneer High Income Fund, Inc. |  | 12/31/23
Principal
Amount
USD ($) 		          Value
  Retail — 0.3%  
798,000 Staples, Inc., 7.50%, 4/15/26 (144A) $     742,481
  Total Retail      $742,481
  Software — 0.9%  
2,245,000 AthenaHealth Group, Inc., 6.50%, 2/15/30 (144A) $   2,036,613
  Total Software    $2,036,613
  Telecommunications — 3.8%  
1,495,000 Altice France Holding S.A., 6.00%, 2/15/28 (144A) $     717,928
1,169,000 Altice France Holding S.A., 10.50%, 5/15/27 (144A)       757,067
270,000 Altice France S.A., 5.125%, 1/15/29 (144A)       209,992
1,910,000 CommScope, Inc., 4.75%, 9/1/29 (144A)     1,282,384
119,296(g) Digicel International Finance Ltd/Digicel international Holdings, Ltd., 8.00%, 12/31/26 (144A)         2,386
3,080,000 Sprint LLC, 7.125%, 6/15/24     3,093,358
41,000 Sprint LLC, 7.625%, 3/1/26        42,833
3,135,000 Windstream Escrow LLC/Windstream Escrow Finance Corp., 7.75%, 8/15/28 (144A)    2,745,485
  Total Telecommunications    $8,851,433
  Transportation — 2.3%  
2,640,000 Carriage Purchaser, Inc., 7.875%, 10/15/29 (144A) $   2,161,406
1,375,000 Danaos Corp., 8.50%, 3/1/28 (144A)     1,395,625
820,000 Seaspan Corp., 5.50%, 8/1/29 (144A)       685,995
1,240,000 Watco Cos. LLC/Watco Finance Corp., 6.50%, 6/15/27 (144A)    1,240,000
  Total Transportation    $5,483,026
  Total Corporate Bonds
(Cost $275,164,665) 		 $270,514,743
Pioneer High Income Fund, Inc. |  | 12/31/2314
Schedule of Investments  |  12/31/23
(unaudited) (continued)
Shares           Value
  Convertible Preferred Stock —
0.4% of Net Assets 		 
  Banks — 0.4%  
752(f) Wells Fargo & Co., 7.50% $     899,106
  Total Banks      $899,106
  Total Convertible Preferred Stock
(Cost $950,539) 		     $899,106
  Preferred Stock — 0.0%† of Net
Assets 		 
  Capital Markets — 0.0%†  
2,144 B Riley Financial, Inc., 6.75%, 5/31/24 $      51,885
  Total Capital Markets       $51,885
  Internet — 0.0%†  
129,055 MYT Holding LLC, 10.00%, 6/6/29 $      29,037
  Total Internet       $29,037
  Total Preferred Stock
(Cost $288,282) 		      $80,922
  Right/Warrant — 0.0%† of Net Assets  
  Trading Companies & Distributors — 0.0%†  
GBP21,700(b) Avation Plc, 1/1/59 $       5,532
  Total Trading Companies & Distributors        $5,532
  Total Right/Warrant
(Cost $—) 		       $5,532
Principal
Amount
USD ($) 		           
  Insurance-Linked Securities — 6.1%
of Net Assets# 		 
  Event Linked Bonds — 0.7%  
  Flood – U.S. — 0.3%  
250,000(a) FloodSmart Re, 17.198%, (3 Month U.S. Treasury Bill + 1,183 bps), 2/25/25 (144A) $     243,175
250,000(a) FloodSmart Re, 18.947%, (3 Month U.S. Treasury Bill + 1,358 bps), 3/1/24 (144A)       249,750
250,000(a) FloodSmart Re, 21.618%, (1 Month U.S. Treasury Bill + 1,625 bps), 3/11/26 (144A)      250,550
                 $743,475
  Multiperil – U.S. — 0.3%  
250,000(a) Matterhorn Re, 10.674%, (SOFR + 525 bps), 3/24/25 (144A) $     243,750
15Pioneer High Income Fund, Inc. |  | 12/31/23
Principal
Amount
USD ($) 		          Value
  Multiperil – U.S. — (continued)  
250,000(a) Matterhorn Re, 13.174%, (SOFR + 775 bps), 3/24/25 (144A) $     246,000
250,000(a) Residential Re 2021-2, 17.348%, (3 Month U.S. Treasury Bill + 1,198 bps), 12/6/25 (144A)      238,700
                 $728,450
  Windstorm – U.S. — 0.1%  
250,000(a) Bonanza Re, 13.617%, (3 Month U.S. Treasury Bill + 825 bps), 1/8/26 (144A) $     249,575
  Total Event Linked Bonds    $1,721,500
Face
Amount
USD ($) 		           
  Collateralized Reinsurance — 0.4%  
  Multiperil – Massachusetts — 0.2%  
350,000(b)(i)+ Portsalon Re 2022, 5/31/28 $     320,922
  Multiperil – U.S. — 0.1%  
250,000(b)(i)+ Ballybunion Re 2023, 12/31/28 $     278,548
  Multiperil – Worldwide — 0.1%  
250,000(b)(i)+ Amaranth Re 2023, 12/31/28 $     264,200
500,000(b)(i)+ Cypress Re 2017, 1/31/24            50
54,000(i)+ Limestone Re 2019-2B, 12/31/24 (144A)           96
                 $264,346
  Total Collateralized Reinsurance      $863,816
  Reinsurance Sidecars — 5.0%  
  Multiperil – U.S. — 0.0%†  
500,000(b)(j)+ Harambee Re 2018, 12/31/24 $          —
600,000(j)+ Harambee Re 2019, 12/31/24          900
                     $900
  Multiperil – Worldwide — 5.0%  
40,466(b)(j)+ Alturas Re 2022-2, 12/31/27 $      10,481
1,500,000(b)(i)+ Bantry Re 2023, 12/31/28     1,847,250
834,446(b)(i)+ Berwick Re 2019-1, 12/31/24       100,133
1,000,000(b)(i)+ Berwick Re 2022, 12/31/27        19,279
1,000,000(b)(i)+ Berwick Re 2023, 12/31/28     1,135,846
500,000(b)(i)+ Eccleston Re 2023, 11/30/28        69,644
750,000(b)(i)+ Gleneagles Re 2022, 12/31/27       356,475
1,063,659(b)(i)+ Gullane Re 2023, 12/31/28     1,338,861
Pioneer High Income Fund, Inc. |  | 12/31/2316
Schedule of Investments  |  12/31/23
(unaudited) (continued)
Face
Amount
USD ($) 		          Value
  Multiperil – Worldwide — (continued)  
499,318(b)(j)+ Lorenz Re 2019, 6/30/24 $       4,793
500,000(i)+ Merion Re 2018-2, 12/31/24        24,992
1,000,000(b)(i)+ Merion Re 2022-2, 12/31/27       948,111
1,250,000(b)(i)+ Pangaea Re 2023-1, 12/31/28     1,519,604
350,000(b)(i)+ Pangaea Re 2023-3, 5/31/29       397,114
20,000(b)(i)+ Sector Re V, 12/1/24 (144A)        35,986
30,000(a)(i)+ Sector Re V, 12/1/26 (144A)       103,988
1,000,000(b)(i)+ Sector Re V, 12/1/27 (144A)     1,288,000
500,000(b)(i)+ Sector Re V, 12/1/28 (144A)       507,278
250,000(i)+ Sussex Re 2020-1, 12/31/24           325
1,500,000(j)+ Thopas Re 2022, 12/31/27        12,150
1,596,147(b)(j)+ Thopas Re 2023, 12/31/28     2,017,849
244,914(b)(i)+ Woburn Re 2019, 12/31/24       41,003
              $11,779,162
  Total Reinsurance Sidecars   $11,780,062
  Total Insurance-Linked Securities
(Cost $12,256,361) 		  $14,365,378
Principal
Amount
USD ($) 		           
  Foreign Government Bond — 0.1% of
Net Assets 		 
  Russia — 0.1%  
204,972(g)(k) Russian Government International Bond, 7.500%, 3/31/30 $     134,316
  Total Russia      $134,316
  Total Foreign Government Bond
(Cost $169,816) 		     $134,316
  U.S. Government and Agency
Obligations — 7.2% of Net Assets 		 
17,000,000(e) U.S. Treasury Bills, 1/16/24 $  16,965,242
  Total U.S. Government and Agency Obligations
(Cost $16,962,805) 		  $16,965,242
17Pioneer High Income Fund, Inc. |  | 12/31/23
Shares           Value
  SHORT TERM INVESTMENTS — 4.9% of
Net Assets 		 
  Open-End Fund — 4.9%  
11,498,050(l) Dreyfus Government Cash Management,
Institutional Shares, 5.25% 		$  11,498,050
              $11,498,050
  TOTAL SHORT TERM INVESTMENTS
(Cost $11,498,050) 		  $11,498,050
  TOTAL INVESTMENTS IN UNAFFILIATED ISSUERS — 143.9%
(Cost $342,364,787) 		 $339,468,690
  OTHER ASSETS AND LIABILITIES — (43.9)% $(103,486,396)
  net assets — 100.0%  $235,982,294
             
bps Basis Points.
CMT Constant Maturity Treasury Index.
FREMF Freddie Mac Multifamily Fixed-Rate Mortgage Loans.
SOFR Secured Overnight Financing Rate.
SOFR30A Secured Overnight Financing Rate 30 Day Average.
(144A) The resale of such security is exempt from registration under Rule 144A of the Securities Act of 1933. Such securities may be resold normally to qualified institutional buyers. At December 31, 2023, the value of these securities amounted to $246,285,225, or 104.4% of net assets.
(a) Floating rate note. Coupon rate, reference index and spread shown at December 31, 2023.
(b) Non-income producing security.
(c) The interest rate is subject to change periodically. The interest rate and/or reference index and spread shown at December 31, 2023.
(d) Security is priced as a unit.
(e) Security issued with a zero coupon. Income is recognized through accretion of discount.
(f) Security is perpetual in nature and has no stated maturity date.
(g) Security is in default.
(h) Payment-in-kind (PIK) security which may pay interest in the form of additional principal amount.
(i) Issued as participation notes.
(j) Issued as preference shares.
(k) Debt obligation initially issued at one coupon which converts to a higher coupon at a specific date. The rate shown is the rate at December 31, 2023.
(l) Rate periodically changes. Rate disclosed is the 7-day yield at December 31, 2023.
Pioneer High Income Fund, Inc. |  | 12/31/2318
Schedule of Investments  |  12/31/23
(unaudited) (continued)
* Senior secured floating rate loan interests in which the Fund invests generally pay interest at rates that are periodically re-determined by reference to a base lending rate plus a premium. These base lending rates are generally (i) the lending rate offered by one or more major European banks, such as LIBOR or SOFR, (ii) the prime rate offered by one or more major United States banks, (iii) the rate of a certificate of deposit or (iv) other base lending rates used by commercial lenders. The interest rate shown is the rate accruing at December 31, 2023.
+ Security is valued using significant unobservable inputs (Level 3).
† Amount rounds to less than 0.1%.
# Securities are restricted as to resale.
Restricted Securities Acquisition date Cost Value
Alturas Re 2022-2 4/11/2023 $5,098 $10,481
Amaranth Re 2023 1/27/2023 208,962 264,200
Ballybunion Re 2023 3/20/2023 250,000 278,548
Bantry Re 2023 1/12/2023 1,500,000 1,847,250
Berwick Re 2019-1 12/31/2018 99,709 100,133
Berwick Re 2022 12/28/2021 17,879 19,279
Berwick Re 2023 2/1/2023 921,704 1,135,846
Bonanza Re 1/6/2023 250,000 249,575
Cypress Re 2017 1/24/2017 1,681 50
Eccleston Re 2023 7/13/2023 — 69,644
FloodSmart Re 2/8/2022 249,679 249,750
FloodSmart Re 2/14/2022 250,000 243,175
FloodSmart Re 2/23/2023 250,000 250,550
Gleneagles Re 2022 1/18/2022 333,071 356,475
Gullane Re 2023 1/20/2023 1,063,659 1,338,861
Harambee Re 2018 12/19/2017 10,612 —
Harambee Re 2019 12/20/2018 — 900
Limestone Re 2019-2B 6/20/2018 359 96
Lorenz Re 2019 6/26/2019 81,826 4,793
Matterhorn Re 3/10/2022 250,000 243,750
Matterhorn Re 3/10/2022 250,000 246,000
Merion Re 2018-2 12/28/2017 — 24,992
Merion Re 2022-2 2/22/2022 1,000,000 948,111
Pangaea Re 2023-1 1/23/2023 1,250,000 1,519,604
Pangaea Re 2023-3 7/5/2023 350,000 397,114
Portsalon Re 2022 7/15/2022 283,022 320,922
Residential Re 2021-2 10/28/2021 250,000 238,700
Sector Re V 1/1/2020 408 35,986
Sector Re V 12/6/2021 — 103,988
Sector Re V 12/30/2022 1,000,000 1,288,000
Sector Re V 12/4/2023 500,000 507,278
Sussex Re 2020-1 1/23/2020 — 325
Thopas Re 2022 2/7/2022 — 12,150
19Pioneer High Income Fund, Inc. |  | 12/31/23
Restricted Securities Acquisition date Cost Value
Thopas Re 2023 2/15/2023 $1,596,147 $2,017,849
Woburn Re 2019 1/30/2019 32,545 41,003
Total Restricted Securities     $14,365,378
% of Net assets     6.1%
FORWARD FOREIGN CURRENCY EXCHANGE CONTRACTS
Currency
Purchased 		In
Exchange for 		Currency
Sold 		Deliver Counterparty Settlement
Date 		Unrealized
Appreciation
(Depreciation)
USD 760,627 GBP 605,000 Citibank NA 3/27/24 $(10,863)
EUR 297,000 USD 324,177 HSBC Bank USA NA 2/27/24 4,485
EUR 5,000,000 USD 5,521,345 State Street Bank & Trust Co. 3/27/24 18,127
USD 5,664,737 EUR 5,332,500 State Street Bank & Trust Co. 1/24/24 (228,429)
TOTAL FORWARD FOREIGN CURRENCY EXCHANGE CONTRACTS $(216,680)
SWAP CONTRACTS
OVER THE COUNTER (OTC) CREDIT DEFAULT SWAP CONTRACTS – SELL PROTECTION
Notional
Amount ($)(1) 		Counterparty Reference
Obligation
/Index 		Pay/
Receive(2) 		Annual
Fixed Rate 		Expiration
Date 		Premiums
(Received) 		Unrealized
Appreciation
(Depreciation) 		Market
Value
988,000 JPMorgan Chase Bank NA United Airlines Holdings, Inc. Receive 5.00% 6/22/27 $(63,700) $93,371 $29,671
329,000 JPMorgan Chase Bank NA United Airlines Holdings, Inc. Receive 5.00% 6/22/27 (24,172) 34,052 9,880
433,000 JPMorgan Chase Bank NA United Airlines Holdings, Inc. Receive 5.00% 6/22/27 (31,831) 44,834 13,003
TOTAL OVER THE COUNTER (OTC) CREDIT
DEFAULT SWAP CONTRACTS – SELL PROTECTION 		$(119,703) $172,257 $52,554
TOTAL SWAP CONTRACTS   $(119,703) $172,257 $52,554
   
(1) The notional amount is the maximum amount that a seller of credit protection would be obligated to pay upon occurrence of a credit event.
(2) Receives quarterly.
Principal amounts are denominated in U.S. dollars (“USD”) unless otherwise noted.
Pioneer High Income Fund, Inc. |  | 12/31/2320
Schedule of Investments  |  12/31/23
(unaudited) (continued)
EUR — Euro
GBP — Great British Pound
IDR — Indonesian Rupiah
USD — United States Dollar
Various inputs are used in determining the value of the Fund's investments. These inputs are summarized in the three broad levels below.
Level 1 – unadjusted quoted prices in active markets for identical securities.
Level 2 – other significant observable inputs (including quoted prices for similar securities, interest rates, prepayment speeds, credit risks, etc.).
Level 3 – significant unobservable inputs (including the Adviser's own assumptions in determining fair value of investments).
The following is a summary of the inputs used as of December 31, 2023 in valuing the Fund's investments:
  Level 1 Level 2 Level 3 Total
Senior Secured Floating Rate Loan Interests $— $3,927,953 $— $3,927,953
Common Stocks        
Chemicals 2,092 — — 2,092
Oil, Gas & Consumable Fuels 125 405 — 530
Passenger Airlines — — 919,640 919,640
Asset Backed Securities — 1,506,207 — 1,506,207
Collateralized Mortgage Obligations — 5,559,294 — 5,559,294
Commercial Mortgage-Backed Securities — 7,273,194 — 7,273,194
Convertible Corporate Bonds — 5,816,491 — 5,816,491
Corporate Bonds — 270,514,743 — 270,514,743
Convertible Preferred Stock 899,106 — — 899,106
Preferred Stock        
Capital Markets 51,885 — — 51,885
Internet — 29,037 — 29,037
Right/Warrant 5,532 — — 5,532
Insurance-Linked Securities        
Collateralized Reinsurance        
Multiperil – Massachusetts — — 320,922 320,922
Multiperil – U.S. — — 278,548 278,548
Multiperil – Worldwide — — 264,346 264,346
Reinsurance Sidecars        
Multiperil – U.S. — — 900 900
Multiperil – Worldwide — — 11,779,162 11,779,162
All Other Insurance-Linked Securities — 1,721,500 — 1,721,500
Foreign Government Bond — 134,316 — 134,316
21Pioneer High Income Fund, Inc. |  | 12/31/23
  Level 1 Level 2 Level 3 Total
U.S. Government and Agency Obligations $— $16,965,242 $— $16,965,242
Open-End Fund 11,498,050 — — 11,498,050
Total Investments in Securities $12,456,790 $313,448,382 $13,563,518 $339,468,690
Other Financial Instruments        
Net unrealized depreciation on forward foreign currency exchange contracts $— $(216,680) $— $(216,680)
OTC swap contracts — 52,554 — 52,554
Total Other Financial Instruments $— $(164,126) $— $(164,126)
The following is a reconciliation of assets valued using significant unobservable inputs (Level 3):
  Common
Stocks 		Insurance-
Linked
Securities 		Total
Balance as of 3/31/23 $634,883 $10,623,431 $11,258,314
Realized gain (loss) — (480,323) (480,323)
Changed in unrealized appreciation (depreciation) 284,757 2,026,525 2,311,282
Accrued discounts/premiums — (788,374) (788,374)
Purchases — 1,939,406 1,939,406
Sales — (676,787) (676,787)
Transfers in to Level 3* — — —
Transfers out of Level 3* — — —
Balance as of 12/31/23 $919,640 $12,643,878 $13,563,518
* Transfers are calculated on the beginning of period value. During the period ended December 31, 2023, there were no transfers in or out of Level 3.
Net change in unrealized appreciation (depreciation) of Level 3 investments still held and considered Level 3 at December 31, 2023: $1,985,444
Pioneer High Income Fund, Inc. |  | 12/31/2322
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