Pioneer High Income Fund, Inc.
Schedule of Investments  |  June 30, 2024 
 
Ticker Symbol: PHT
Schedule of Investments  |  6/30/24
(unaudited) 
Principal
Amount
USD ($) 		          Value
  UNAFFILIATED ISSUERS — 144.2%  
  Senior Secured Floating Rate
Loan Interests — 2.0% of Net Assets*(a) 		 
  Auto Parts & Equipment — 0.6%  
1,379,192 First Brands Group LLC, First Lien 2021 Term Loan, 10.591% (Term SOFR + 500 bps), 3/30/27 $   1,372,788
  Total Auto Parts & Equipment    $1,372,788
  Casino Hotels — 0.6%  
1,500,000 Century Casinos, Inc., Term B Facility Loan, 11.429% (Term SOFR + 600 bps), 4/2/29 $   1,460,000
  Total Casino Hotels    $1,460,000
  Cruise Lines — 0.3%  
840,000 LC Ahab US Bidco LLC, Initial Term Loan, 8.844% (Term SOFR + 350 bps), 5/1/31 $     842,625
  Total Cruise Lines      $842,625
  Electric-Generation — 0.3%  
718,811 Generation Bridge Northeast LLC, Term Loan B, 8.844% (Term SOFR + 350 bps), 8/22/29 $     724,202
  Total Electric-Generation      $724,202
  Medical-Drugs — 0.2%  
390,000 Endo Finance Holdings, Inc., Initial Term Loan, 9.826% (Term SOFR + 450 bps), 4/23/31 $     389,634
  Total Medical-Drugs      $389,634
  Total Senior Secured Floating Rate Loan Interests
(Cost $4,745,671) 		   $4,789,249
Shares            
  Common Stocks — 0.5% of Net Assets  
  Chemicals — 0.0%†  
22 LyondellBasell Industries NV, Class A $       2,104
  Total Chemicals        $2,104
  Communications Equipment — 0.0%†  
2,630+ Digicel International Finance Ltd. $       5,260
  Total Communications Equipment        $5,260
1Pioneer High Income Fund, Inc. | 6/30/24
Shares           Value
  Oil, Gas & Consumable Fuels — 0.0%†  
21(b) Amplify Energy Corp. $         142
8,027 Petroquest Energy, Inc.        5,222
  Total Oil, Gas & Consumable Fuels        $5,364
  Passenger Airlines — 0.5%  
57,203 Grupo Aeromexico SAB de CV $   1,125,612
  Total Passenger Airlines    $1,125,612
  Pharmaceuticals — 0.0%†  
2,975(b) Endo, Inc. $      84,044
  Total Pharmaceuticals       $84,044
  Professional Services — 0.0%†  
251,944+ Atento S.A. $           8
  Total Professional Services            $8
  Total Common Stocks
(Cost $1,637,218) 		   $1,222,392
Principal
Amount
USD ($) 		           
  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) $   1,529,419
  Total Asset Backed Securities
(Cost $1,500,000) 		   $1,529,419
  Collateralized Mortgage
Obligations—2.4% of Net Assets 		 
710,000(a) Connecticut Avenue Securities Trust, Series 2021-R01, Class 1B2, 11.335% (SOFR30A + 600 bps), 10/25/41 (144A) $     745,865
430,000(a) Federal Home Loan Mortgage Corp. STACR REMIC Trust, Series 2021-DNA7, Class B2, 13.135% (SOFR30A + 780 bps), 11/25/41 (144A)       465,353
450,000(a) Federal Home Loan Mortgage Corp. STACR REMIC Trust, Series 2021-HQA3, Class B2, 11.585% (SOFR30A + 625 bps), 9/25/41 (144A)       469,614
610,000(a) Federal Home Loan Mortgage Corp. STACR REMIC Trust, Series 2022-DNA2, Class B2, 13.835% (SOFR30A + 850 bps), 2/25/42 (144A)       675,575
Pioneer High Income Fund, Inc. | 6/30/242
Schedule of Investments  |  6/30/24
(unaudited) (continued)
Principal
Amount
USD ($) 		          Value
  Collateralized Mortgage
Obligations—(continued) 		 
1,370,000(a) Federal Home Loan Mortgage Corp. STACR Trust, Series 2019-DNA3, Class B2, 13.60% (SOFR30A + 826 bps), 7/25/49 (144A) $   1,586,090
120,000(a) Federal National Mortgage Association Connecticut Avenue Securities, Series 2021-R02, Class 2B2, 11.535% (SOFR30A + 620 bps), 11/25/41 (144A)       127,025
1,350,000(a) STACR Trust, Series 2018-HRP2, Class B2, 15.95% (SOFR30A + 1,061 bps), 2/25/47 (144A)    1,665,562
  Total Collateralized Mortgage Obligations
(Cost $5,233,392) 		   $5,735,084
  Commercial Mortgage-Backed
Securities—3.1% of Net Assets 		 
1,430,000(a) Capital Funding Mortgage Trust, Series 2021-19, Class B, 20.54% (1 Month Term SOFR + 1,521 bps), 10/27/24 (144A) $   1,421,742
1,032,208(c) FREMF Mortgage Trust, Series 2019-KJ24, Class B, 7.60%, 10/25/27 (144A)       952,366
1,500,000(a) FREMF Mortgage Trust, Series 2019-KS12, Class C, 12.339% (SOFR30A + 701 bps), 8/25/29     1,437,976
222,712(a) FREMF Mortgage Trust, Series 2020-KF74, Class C, 11.689% (SOFR30A + 636 bps), 1/25/27 (144A)       203,543
318,112(a) FREMF Mortgage Trust, Series 2020-KF83, Class C, 14.439% (SOFR30A + 911 bps), 7/25/30 (144A)       299,721
1,169,388(a) Med Trust, Series 2021-MDLN, Class G, 10.693% (1 Month Term SOFR + 536 bps), 11/15/38 (144A)     1,169,011
2,500,000 Wells Fargo Commercial Mortgage Trust, Series 2015-C28, Class E, 3.00%, 5/15/48 (144A)    1,908,750
  Total Commercial Mortgage-Backed Securities
(Cost $7,645,724) 		   $7,393,109
3Pioneer High Income Fund, Inc. | 6/30/24
Principal
Amount
USD ($) 		          Value
  Convertible Corporate Bonds —
2.7% of Net Assets 		 
  Banks — 0.0%†  
IDR1,422,679,000 PT Bakrie & Brothers Tbk, 12/31/24 $       4,170
  Total Banks        $4,170
  Chemicals — 1.7%  
4,000,000(d) Hercules LLC, 6.50%, 6/30/29 $   4,131,205
  Total Chemicals    $4,131,205
  Commercial Services — 0.5%  
1,130,000 Global Payments, Inc., 1.50%, 3/1/31 (144A) $   1,034,515
  Total Commercial Services    $1,034,515
  Entertainment — 0.5%  
1,455,000(e) DraftKings Holdings, Inc., 3/15/28 $   1,205,467
  Total Entertainment    $1,205,467
  Total Convertible Corporate Bonds
(Cost $5,588,917) 		   $6,375,357
  Corporate Bonds — 125.4% of Net
Assets 		 
  Advertising — 3.3%  
2,090,000 Clear Channel Outdoor Holdings, Inc., 7.50%, 6/1/29 (144A) $   1,746,446
1,470,000 Neptune Bidco US, Inc., 9.29%, 4/15/29 (144A)     1,410,869
2,010,000 Stagwell Global LLC, 5.625%, 8/15/29 (144A)     1,856,472
3,000,000 Summer BC Bidco B LLC, 5.50%, 10/31/26 (144A)    2,929,679
  Total Advertising    $7,943,466
  Aerospace & Defense — 1.6%  
2,150,000 Bombardier, Inc., 6.00%, 2/15/28 (144A) $   2,125,267
246,000 Bombardier, Inc., 7.125%, 6/15/26 (144A)       249,549
740,000 Spirit AeroSystems, Inc., 9.375%, 11/30/29 (144A)       796,711
592,000 Triumph Group, Inc., 9.00%, 3/15/28 (144A)      620,558
  Total Aerospace & Defense    $3,792,085
  Agriculture — 0.8%  
2,795,000 Frigorifico Concepcion S.A., 7.70%, 7/21/28 (144A) $   1,900,984
  Total Agriculture    $1,900,984
Pioneer High Income Fund, Inc. | 6/30/244
Schedule of Investments  |  6/30/24
(unaudited) (continued)
Principal
Amount
USD ($) 		          Value
  Airlines — 7.3%  
1,867,432(f) ABRA Global Finance, 11.50% (5.50% PIK or 6.00% Cash), 3/2/28 (144A) $   1,827,659
420,000 Allegiant Travel Co., 7.25%, 8/15/27 (144A)       399,708
355,000 Delta Air Lines, Inc., 7.375%, 1/15/26       362,105
2,839,263(a) Gol Finance S.A., 15.837% (1 Month Term SOFR + 1,050 bps), 1/29/25 (144A)     3,059,306
3,255,000 Grupo Aeromexico SAB de CV, 8.50%, 3/17/27 (144A)     3,257,194
330,000 Latam Airlines Group S.A., 13.375%, 10/15/29 (144A)       379,318
828,000 Mileage Plus Holdings LLC/Mileage Plus Intellectual Property Assets, Ltd., 6.50%, 6/20/27 (144A)       829,653
2,460,000 Pegasus Hava Tasimaciligi AS, 9.25%, 4/30/26 (144A)     2,494,600
EUR1,600,000 Transportes Aereos Portugueses S.A., 5.625%, 12/2/24 (144A)     1,710,161
2,360,000 VistaJet Malta Finance Plc/Vista Management Holding, Inc., 6.375%, 2/1/30 (144A)     1,854,375
1,470,000 VistaJet Malta Finance Plc/Vista Management Holding, Inc., 9.50%, 6/1/28 (144A)    1,288,638
  Total Airlines   $17,462,717
  Auto Manufacturers — 0.4%  
1,035,000 JB Poindexter & Co., Inc., 8.75%, 12/15/31 (144A) $   1,072,251
  Total Auto Manufacturers    $1,072,251
  Auto Parts & Equipment — 1.3%  
1,285,000 Adient Global Holdings, Ltd., 8.25%, 4/15/31 (144A) $   1,341,052
1,620,000 Garrett Motion Holdings, Inc./Garrett LX I S.a.r.l., 7.75%, 5/31/32 (144A)    1,641,743
  Total Auto Parts & Equipment    $2,982,795
  Banks — 3.9%  
600,000(c)(g) Bank of America Corp., 6.50% (3 Month Term SOFR + 444 bps) $     598,703
EUR2,400,000(c)(g) CaixaBank S.A., 3.625% (5 Year EUR Swap + 386 bps)     2,146,184
525,000(c) Citizens Financial Group, Inc., 6.645% (SOFR + 233 bps), 4/25/35       542,664
1,175,000 Freedom Mortgage Corp., 12.25%, 10/1/30 (144A)     1,263,981
5Pioneer High Income Fund, Inc. | 6/30/24
Principal
Amount
USD ($) 		          Value
  Banks — (continued)  
675,000(c)(g) Intesa Sanpaolo S.p.A., 7.70% (5 Year USD Swap Rate + 546 bps) (144A) $     673,260
1,975,000 KeyBank N.A./Cleveland OH, 4.90%, 8/8/32     1,760,108
410,000(c)(h) Toronto-Dominion Bank, 7.25% (5 Year CMT Index + 298 bps), 7/31/84       408,975
1,240,000(c) Toronto-Dominion Bank, 8.125% (5 Year CMT Index + 408 bps), 10/31/82     1,285,089
545,000(c)(g) UBS Group AG, 9.25% (5 Year CMT Index + 476 bps) (144A)      610,341
  Total Banks    $9,289,305
  Biotechnology — 0.3%  
EUR745,000 Cidron Aida Finco S.a.r.l., 5.00%, 4/1/28 (144A) $     737,492
  Total Biotechnology      $737,492
  Building Materials — 2.1%  
1,991,000 AmeriTex HoldCo Intermediate LLC, 10.25%, 10/15/28 (144A) $   2,096,688
2,211,000 Cornerstone Building Brands, Inc., 6.125%, 1/15/29 (144A)     1,818,378
1,140,000 Knife River Corp., 7.75%, 5/1/31 (144A)    1,191,303
  Total Building Materials    $5,106,369
  Chemicals — 8.8%  
1,355,000 LSF11 A5 HoldCo LLC, 6.625%, 10/15/29 (144A) $   1,282,440
EUR885,000 Lune Holdings S.a.r.l., 5.625%, 11/15/28 (144A)       811,546
2,250,000 LYB Finance Co. BV, 8.10%, 3/15/27 (144A)     2,380,161
2,831,000 Mativ Holdings, Inc., 6.875%, 10/1/26 (144A)     2,812,804
470,000 Olin Corp., 9.50%, 6/1/25 (144A)       479,247
EUR1,355,000 Olympus Water US Holding Corp., 9.625%, 11/15/28 (144A)     1,554,712
2,320,000 Olympus Water US Holding Corp., 9.75%, 11/15/28 (144A)     2,454,492
3,517,000 Rain Carbon, Inc., 12.25%, 9/1/29 (144A)     3,785,287
2,500,000 SCIL IV LLC/SCIL USA Holdings LLC, 5.375%, 11/1/26 (144A)     2,417,356
EUR1,005,000 SCIL IV LLC/SCIL USA Holdings LLC, 9.50%, 7/15/28 (144A)     1,163,109
2,000,000 Tronox, Inc., 4.625%, 3/15/29 (144A)    1,805,377
  Total Chemicals   $20,946,531
Pioneer High Income Fund, Inc. | 6/30/246
Schedule of Investments  |  6/30/24
(unaudited) (continued)
Principal
Amount
USD ($) 		          Value
  Coal — 1.2%  
2,795,000 Alliance Resource Operating Partners LP/Alliance Resource Finance Corp., 8.625%, 6/15/29 (144A) $   2,868,369
  Total Coal    $2,868,369
  Commercial Services — 6.7%  
20,000 Allied Universal Holdco LLC, 7.875%, 2/15/31 (144A) $      20,052
1,645,000 Allied Universal Holdco LLC/Allied Universal Finance Corp., 6.00%, 6/1/29 (144A)     1,440,008
1,905,000 Allied Universal Holdco LLC/Allied Universal Finance Corp., 9.75%, 7/15/27 (144A)     1,893,370
1,652,000 Champions Financing, Inc., 8.75%, 2/15/29 (144A)     1,694,083
2,116,000 Garda World Security Corp., 6.00%, 6/1/29 (144A)     1,930,484
2,059,000 Garda World Security Corp., 9.50%, 11/1/27 (144A)     2,068,527
319,000 Herc Holdings, Inc., 5.50%, 7/15/27 (144A)       314,008
915,000 NESCO Holdings II, Inc., 5.50%, 4/15/29 (144A)       847,498
4,155,000 Prime Security Services Borrower LLC/Prime Finance, Inc., 6.25%, 1/15/28 (144A)     4,094,432
1,093,000 Sotheby's, 7.375%, 10/15/27 (144A)       912,716
690,000 Williams Scotsman, Inc., 6.625%, 6/15/29 (144A)      695,460
  Total Commercial Services   $15,910,638
  Computers — 0.6%  
415,000 Fortress Intermediate 3, Inc., 7.50%, 6/1/31 (144A) $     425,188
980,000 NCR Voyix Corp., 5.00%, 10/1/28 (144A)      925,298
  Total Computers    $1,350,486
  Distribution/Wholesale — 1.9%  
2,460,000 Dealer Tire LLC/DT Issuer LLC, 8.00%, 2/1/28 (144A) $   2,373,826
705,000 Velocity Vehicle Group LLC, 8.00%, 6/1/29 (144A)       725,128
1,325,000 Windsor Holdings III LLC, 8.50%, 6/15/30 (144A)    1,382,885
  Total Distribution/Wholesale    $4,481,839
7Pioneer High Income Fund, Inc. | 6/30/24
Principal
Amount
USD ($) 		          Value
  Diversified Financial Services — 10.7%  
3,500,000(c)(g) Air Lease Corp., 4.125% (5 Year CMT Index + 315 bps) $   3,163,872
811,000 Bread Financial Holdings, Inc., 7.00%, 1/15/26 (144A)       809,940
140,000(i) Credito Real SAB de CV SOFOM ER, 8.00%, 1/21/28 (144A)        13,469
1,500,000(i) Credito Real SAB de CV SOFOM ER, 9.50%, 2/7/26 (144A)       132,000
1,095,000 Freedom Mortgage Holdings LLC, 9.125%, 5/15/31 (144A)     1,065,545
1,140,000 Freedom Mortgage Holdings LLC, 9.25%, 2/1/29 (144A)     1,139,264
EUR480,000 Garfunkelux Holdco 3 S.A., 6.75%, 11/1/25 (144A)       341,976
GBP820,000 Garfunkelux Holdco 3 S.A., 7.75%, 11/1/25 (144A)       687,655
350,000 GGAM Finance, Ltd., 7.75%, 5/15/26 (144A)       357,000
1,805,000 GGAM Finance, Ltd., 8.00%, 6/15/28 (144A)     1,897,506
1,913,643(f) Global Aircraft Leasing Co., Ltd., 6.50% (7.25% PIK or 6.50% Cash), 9/15/24 (144A)     1,842,201
2,900,000 Jefferies Finance LLC/JFIN Co.-Issuer Corp., 5.00%, 8/15/28 (144A)     2,675,162
845,000 Nationstar Mortgage Holdings, Inc., 6.00%, 1/15/27 (144A)       835,992
1,210,000 OneMain Finance Corp., 7.875%, 3/15/30     1,247,578
2,320,000 OneMain Finance Corp., 9.00%, 1/15/29     2,447,651
755,000 PHH Mortgage Corp., 7.875%, 3/15/26 (144A)       736,193
3,415,000 Provident Funding Associates LP/PFG Finance Corp., 6.375%, 6/15/25 (144A)     3,317,717
1,051,000 United Wholesale Mortgage LLC, 5.50%, 4/15/29 (144A)       998,513
1,860,000 United Wholesale Mortgage LLC, 5.75%, 6/15/27 (144A)    1,815,816
  Total Diversified Financial Services   $25,525,050
  Electric — 0.9%  
412,000 Cemig Geracao e Transmissao S.A., 9.25%, 12/5/24 (144A) $     412,327
676,000 NRG Energy, Inc., 6.625%, 1/15/27       674,652
Pioneer High Income Fund, Inc. | 6/30/248
Schedule of Investments  |  6/30/24
(unaudited) (continued)
Principal
Amount
USD ($) 		          Value
  Electric — (continued)  
1,045,000 Talen Energy Supply LLC, 8.625%, 6/1/30 (144A) $   1,114,204
6,000 Vistra Operations Co. LLC, 5.625%, 2/15/27 (144A)        5,899
  Total Electric    $2,207,082
  Electrical Components & Equipments — 1.3%  
2,600,000 Energizer Holdings, Inc., 6.50%, 12/31/27 (144A) $   2,596,934
520,000 WESCO Distribution, Inc., 7.25%, 6/15/28 (144A)      529,328
  Total Electrical Components & Equipments    $3,126,262
  Electronics — 0.3%  
735,000 EquipmentShare.com, Inc., 8.625%, 5/15/32 (144A) $     762,138
  Total Electronics      $762,138
  Entertainment — 2.6%  
395,000 International Game Technology Plc, 6.25%, 1/15/27 (144A) $     396,291
208,000 International Game Technology Plc, 6.50%, 2/15/25 (144A)       208,113
1,910,000 Light & Wonder International, Inc., 7.00%, 5/15/28 (144A)     1,919,869
1,910,000 Light & Wonder International, Inc., 7.25%, 11/15/29 (144A)     1,950,692
EUR730,000 Lottomatica S.p.A./Roma, 7.125%, 6/1/28 (144A)       823,229
930,000 Mohegan Tribal Gaming Authority, 8.00%, 2/1/26 (144A)      881,686
  Total Entertainment    $6,179,880
  Food — 0.4%  
531,000 Albertsons Cos., Inc./Safeway, Inc./New Albertsons LP/Albertsons LLC, 7.50%, 3/15/26 (144A) $     538,471
315,000 Fiesta Purchaser, Inc., 7.875%, 3/1/31 (144A)      325,485
  Total Food      $863,956
  Healthcare-Products — 0.8%  
1,960,000 Sotera Health Holdings LLC, 7.375%, 6/1/31 (144A) $   1,962,911
  Total Healthcare-Products    $1,962,911
9Pioneer High Income Fund, Inc. | 6/30/24
Principal
Amount
USD ($) 		          Value
  Healthcare-Services — 3.3%  
1,014,000 Auna SAA, 10.00%, 12/15/29 (144A) $   1,035,115
580,000 CHS/Community Health Systems, Inc., 5.625%, 3/15/27 (144A)       540,100
265,000 CHS/Community Health Systems, Inc., 6.00%, 1/15/29 (144A)       233,864
760,000(h) Concentra Escrow Issuer Corp., 6.875%, 7/15/32 (144A)       770,002
385,000 LifePoint Health, Inc., 5.375%, 1/15/29 (144A)       338,306
2,640,000 Prime Healthcare Services, Inc., 7.25%, 11/1/25 (144A)     2,635,406
2,325,000 US Acute Care Solutions LLC, 9.75%, 5/15/29 (144A)    2,289,633
  Total Healthcare-Services    $7,842,426
  Home Builders — 1.5%  
1,155,000 Beazer Homes USA, Inc., 7.25%, 10/15/29 $   1,156,614
2,285,000 LGI Homes, Inc., 8.75%, 12/15/28 (144A)    2,380,066
  Total Home Builders    $3,536,680
  Household Products/Wares — 0.7%  
2,050,000 Spectrum Brands, Inc., 3.875%, 3/15/31 (144A) $   1,713,246
  Total Household Products/Wares    $1,713,246
  Insurance — 5.0%  
3,800,000 Hanover Insurance Group, Inc., 7.625%, 10/15/25 $   3,874,281
3,075,000(c) Liberty Mutual Group, Inc., 10.75% (3 Month Term SOFR + 738 bps), 6/15/58 (144A)     3,699,857
2,677,000 Liberty Mutual Insurance Co., 7.697%, 10/15/97 (144A)     2,958,083
1,100,000 MetLife, Inc., 10.75%, 8/1/39    1,467,222
  Total Insurance   $11,999,443
  Internet — 0.4%  
205,000 Expedia Group, Inc., 6.25%, 5/1/25 (144A) $     205,327
700,000 ION Trading Technologies S.a.r.l., 9.50%, 5/30/29 (144A)      712,985
  Total Internet      $918,312
  Iron & Steel — 2.4%  
1,855,000 Carpenter Technology Corp., 7.625%, 3/15/30 $   1,909,764
Pioneer High Income Fund, Inc. | 6/30/2410
Schedule of Investments  |  6/30/24
(unaudited) (continued)
Principal
Amount
USD ($) 		          Value
  Iron & Steel — (continued)  
1,721,000 Cleveland-Cliffs, Inc., 7.00%, 3/15/32 (144A) $   1,701,516
2,235,000 TMS International Corp., 6.25%, 4/15/29 (144A)    2,040,366
  Total Iron & Steel    $5,651,646
  Leisure Time — 4.5%  
215,000 Carnival Corp., 7.625%, 3/1/26 (144A) $     217,125
235,000 Carnival Holdings Bermuda, Ltd., 10.375%, 5/1/28 (144A)       254,407
EUR731,000 Carnival Plc, 1.00%, 10/28/29       639,229
1,000,000(h) Cruise Yacht Upper HoldCo, Ltd., 11.875%, 7/5/28     1,007,500
1,295,000 NCL Corp., Ltd., 5.875%, 3/15/26 (144A)     1,280,267
2,435,000 NCL Corp., Ltd., 7.75%, 2/15/29 (144A)     2,531,672
965,000 NCL Corp., Ltd., 8.125%, 1/15/29 (144A)     1,011,081
360,000 NCL Finance, Ltd., 6.125%, 3/15/28 (144A)       355,512
745,000 Royal Caribbean Cruises, Ltd., 5.50%, 4/1/28 (144A)       735,497
2,790,000 Viking Cruises, Ltd., 6.25%, 5/15/25 (144A)    2,787,975
  Total Leisure Time   $10,820,265
  Lodging — 2.5%  
375,000(h) Choice Hotels International, Inc., 5.85%, 8/1/34 $     369,603
1,715,000 Hilton Grand Vacations Borrower Escrow LLC/Hilton Grand Vacations Borrower Esc, 6.625%, 1/15/32 (144A)     1,723,030
1,715,000 Melco Resorts Finance, Ltd., 7.625%, 4/17/32 (144A)     1,700,697
1,505,000 MGM Resorts International, 6.50%, 4/15/32     1,498,046
725,000 Travel + Leisure Co., 6.625%, 7/31/26 (144A)      730,478
  Total Lodging    $6,021,854
  Media — 4.3%  
2,500,000 CCO Holdings LLC/CCO Holdings Capital Corp., 4.75%, 2/1/32 (144A) $   2,047,426
2,200,000 CSC Holdings LLC, 4.625%, 12/1/30 (144A)       801,245
1,925,000 CSC Holdings LLC, 5.00%, 11/15/31 (144A)       697,831
835,000 CSC Holdings LLC, 11.75%, 1/31/29 (144A)       712,133
1,057,000 Gray Television, Inc., 7.00%, 5/15/27 (144A)       973,183
11Pioneer High Income Fund, Inc. | 6/30/24
Principal
Amount
USD ($) 		          Value
  Media — (continued)  
1,545,000 Gray Television, Inc., 10.50%, 7/15/29 (144A) $   1,553,312
3,530,000 McGraw-Hill Education, Inc., 8.00%, 8/1/29 (144A)    3,432,616
  Total Media   $10,217,746
  Metal Fabricate/Hardware — 0.5%  
1,185,000 Park-Ohio Industries, Inc., 6.625%, 4/15/27 $   1,140,739
  Total Metal Fabricate/Hardware    $1,140,739
  Mining — 3.7%  
2,340,000 Coeur Mining, Inc., 5.125%, 2/15/29 (144A) $   2,193,010
705,000 First Quantum Minerals, Ltd., 6.875%, 10/15/27 (144A)       688,754
2,840,000 First Quantum Minerals, Ltd., 8.625%, 6/1/31 (144A)     2,835,229
415,000 First Quantum Minerals, Ltd., 9.375%, 3/1/29 (144A)       433,623
692,000 Hudbay Minerals, Inc., 6.125%, 4/1/29 (144A)       688,614
2,010,000 Taseko Mines, Ltd., 8.25%, 5/1/30 (144A)    2,056,268
  Total Mining    $8,895,498
  Miscellaneous Manufacturing — 1.2%  
2,880,000 Trinity Industries, Inc., 7.75%, 7/15/28 (144A) $   2,981,389
  Total Miscellaneous Manufacturing    $2,981,389
  Oil & Gas — 14.3%  
685,000 3R Lux S.a.r.l., 9.75%, 2/5/31 (144A) $     718,923
2,430,000 Aethon United BR LP/Aethon United Finance Corp., 8.25%, 2/15/26 (144A)     2,456,565
1,105,000 Ascent Resources Utica Holdings LLC/ARU Finance Corp., 5.875%, 6/30/29 (144A)     1,079,881
1,890,000 Baytex Energy Corp., 7.375%, 3/15/32 (144A)     1,920,614
2,140,000 Baytex Energy Corp., 8.50%, 4/30/30 (144A)     2,238,012
727,378 Borr IHC, Ltd./Borr Finance LLC, 10.00%, 11/15/28 (144A)       760,110
541,529 Borr IHC, Ltd./Borr Finance LLC, 10.375%, 11/15/30 (144A)       566,421
180,000 Cenovus Energy, Inc., 6.75%, 11/15/39       194,218
925,000 CITGO Petroleum Corp., 8.375%, 1/15/29 (144A)       953,409
1,225,000 Civitas Resources, Inc., 8.375%, 7/1/28 (144A)     1,283,590
830,000 Civitas Resources, Inc., 8.625%, 11/1/30 (144A)       889,943
1,225,000 Civitas Resources, Inc., 8.75%, 7/1/31 (144A)     1,311,914
Pioneer High Income Fund, Inc. | 6/30/2412
Schedule of Investments  |  6/30/24
(unaudited) (continued)
Principal
Amount
USD ($) 		          Value
  Oil & Gas — (continued)  
830,000 Hilcorp Energy I LP/Hilcorp Finance Co., 6.00%, 2/1/31 (144A) $     792,181
1,815,000 Hilcorp Energy I LP/Hilcorp Finance Co., 6.875%, 5/15/34 (144A)     1,795,372
1,330,000 Kosmos Energy, Ltd., 7.75%, 5/1/27 (144A)     1,300,224
1,010,000 MEG Energy Corp., 5.875%, 2/1/29 (144A)       982,444
1,003,000 MEG Energy Corp., 7.125%, 2/1/27 (144A)     1,016,980
750,000 Murphy Oil Corp., 6.375%, 7/15/28       755,658
1,109,000 Nabors Industries, Ltd., 7.50%, 1/15/28 (144A)     1,058,212
2,010,000 Occidental Petroleum Corp., 4.40%, 4/15/46     1,577,564
692,000 Petroleos Mexicanos, 6.70%, 2/16/32       579,397
579,000 Precision Drilling Corp., 6.875%, 1/15/29 (144A)       572,776
1,065,000 Seadrill Finance, Ltd., 8.375%, 8/1/30 (144A)     1,113,117
2,265,000 Shelf Drilling Holdings, Ltd., 9.625%, 4/15/29 (144A)     2,165,979
885,000 Southwestern Energy Co., 4.75%, 2/1/32       814,133
285,000 Transocean Titan Financing, Ltd., 8.375%, 2/1/28 (144A)       294,145
1,030,000 Transocean, Inc., 6.80%, 3/15/38       854,536
665,000 Transocean, Inc., 8.25%, 5/15/29 (144A)       666,649
665,000 Transocean, Inc., 8.50%, 5/15/31 (144A)       665,285
2,075,000 Tullow Oil Plc, 10.25%, 5/15/26 (144A)     1,968,378
1,000,000 YPF S.A., 6.95%, 7/21/27 (144A)      905,211
  Total Oil & Gas   $34,251,841
  Oil & Gas Services — 2.7%  
385,000 Archrock Partners LP/Archrock Partners Finance Corp., 6.25%, 4/1/28 (144A) $     381,298
2,583,000 Archrock Partners LP/Archrock Partners Finance Corp., 6.875%, 4/1/27 (144A)     2,593,293
1,445,000 Enerflex, Ltd., 9.00%, 10/15/27 (144A)     1,463,165
703,000 USA Compression Partners LP/USA Compression Finance Corp., 6.875%, 9/1/27       704,317
1,290,000 USA Compression Partners LP/USA Compression Finance Corp., 7.125%, 3/15/29 (144A)    1,299,814
  Total Oil & Gas Services    $6,441,887
13Pioneer High Income Fund, Inc. | 6/30/24
Principal
Amount
USD ($) 		          Value
  Packaging & Containers — 1.2%  
EUR1,400,000 Fiber Bidco S.p.A., 6.125%, 6/15/31 (144A) $   1,484,337
1,355,000 Owens-Brockway Glass Container, Inc., 7.25%, 5/15/31 (144A)    1,352,648
  Total Packaging & Containers    $2,836,985
  Pharmaceuticals — 2.6%  
265,000 Endo Finance Holdings, Inc., 8.50%, 4/15/31 (144A) $     273,474
2,750,000 Owens & Minor, Inc., 6.625%, 4/1/30 (144A)     2,500,033
2,365,000 P&L Development LLC/PLD Finance Corp., 7.75%, 11/15/25 (144A)     2,152,197
579,000+ Par Pharmaceutical, Inc., 7.50%, 4/1/27 (144A)            —
1,095,000 Teva Pharmaceutical Finance Netherlands III BV, 7.875%, 9/15/29     1,176,103
1,300,000+ Tricida, Inc., 5/15/27           —
  Total Pharmaceuticals    $6,101,807
  Pipelines — 7.5%  
1,716,369 Acu Petroleo Luxembourg S.a.r.l., 7.50%, 1/13/32 (144A) $   1,664,043
910,000 DCP Midstream Operating LP, 5.60%, 4/1/44       871,468
1,060,000 Delek Logistics Partners LP/Delek Logistics Finance Corp., 7.125%, 6/1/28 (144A)     1,046,746
1,524,000(a) Energy Transfer LP, 8.606% (3 Month Term SOFR + 328 bps), 11/1/66     1,495,948
1,965,000(c)(g) Energy Transfer LP, 7.125% (5 Year CMT Index + 531 bps)     1,946,411
248,000 EnLink Midstream Partners LP, 5.05%, 4/1/45       203,840
270,000 EnLink Midstream Partners LP, 5.45%, 6/1/47       234,240
717,000 EnLink Midstream Partners LP, 5.60%, 4/1/44       635,940
1,845,000 Genesis Energy LP/Genesis Energy Finance Corp., 7.875%, 5/15/32     1,862,585
770,000 Genesis Energy LP/Genesis Energy Finance Corp., 8.00%, 1/15/27       787,293
421,000 Global Partners LP/GLP Finance Corp., 7.00%, 8/1/27       422,695
1,515,000 Harvest Midstream I LP, 7.50%, 9/1/28 (144A)     1,539,239
1,150,000 NuStar Logistics LP, 6.375%, 10/1/30     1,169,391
215,000 Venture Global LNG, Inc., 8.125%, 6/1/28 (144A)       221,497
1,355,000 Venture Global LNG, Inc., 8.375%, 6/1/31 (144A)     1,405,448
Pioneer High Income Fund, Inc. | 6/30/2414
Schedule of Investments  |  6/30/24
(unaudited) (continued)
Principal
Amount
USD ($) 		          Value
  Pipelines — (continued)  
505,000 Venture Global LNG, Inc., 9.50%, 2/1/29 (144A) $     553,024
1,801,000 Williams Cos., Inc., 5.75%, 6/24/44    1,763,306
  Total Pipelines   $17,823,114
  Real Estate — 1.4%  
4,000,000 Kennedy-Wilson, Inc., 5.00%, 3/1/31 $   3,271,139
  Total Real Estate    $3,271,139
  REITs — 2.0%  
EUR490,000 Alexandrite Monnet UK Holdco Plc, 10.50%, 5/15/29 (144A) $     544,087
2,275,000 MPT Operating Partnership LP/MPT Finance Corp., 3.50%, 3/15/31     1,482,426
365,000 Starwood Property Trust, Inc., 7.25%, 4/1/29 (144A)       368,913
230,000 Uniti Group LP/Uniti Fiber Holdings, Inc./CSL Capital LLC, 6.00%, 1/15/30 (144A)       139,102
1,555,000 Uniti Group LP/Uniti Group Finance, Inc./CSL Capital LLC, 10.50%, 2/15/28 (144A)     1,522,784
755,000 Uniti Group LP/Uniti Group Finance, Inc./CSL Capital LLC, 10.50%, 2/15/28 (144A)      739,358
  Total REITs    $4,796,670
  Retail — 1.7%  
GBP1,320,000 CD&R Firefly Bidco Plc, 8.625%, 4/30/29 (144A) $   1,689,887
1,210,000 Cougar JV Subsidiary LLC, 8.00%, 5/15/32 (144A)     1,251,227
1,125,000 LCM Investments Holdings II LLC, 8.25%, 8/1/31 (144A)    1,173,914
  Total Retail    $4,115,028
  Telecommunications — 2.4%  
1,495,000 Altice France Holding S.A., 6.00%, 2/15/28 (144A) $     485,875
1,169,000 Altice France Holding S.A., 10.50%, 5/15/27 (144A)       466,396
270,000 Altice France S.A., 5.125%, 1/15/29 (144A)       176,174
1,910,000 CommScope, Inc., 4.75%, 9/1/29 (144A)     1,322,312
375,000 Iliad Holding SASU, 8.50%, 4/15/31 (144A)       379,702
15Pioneer High Income Fund, Inc. | 6/30/24
Principal
Amount
USD ($) 		          Value
  Telecommunications — (continued)  
41,000 Sprint LLC, 7.625%, 3/1/26 $      42,131
3,135,000 Windstream Escrow LLC/Windstream Escrow Finance Corp., 7.75%, 8/15/28 (144A)    2,953,311
  Total Telecommunications    $5,825,901
  Transportation — 2.4%  
2,640,000 Carriage Purchaser, Inc., 7.875%, 10/15/29 (144A) $   2,432,145
1,375,000 Danaos Corp., 8.50%, 3/1/28 (144A)     1,412,060
820,000 Seaspan Corp., 5.50%, 8/1/29 (144A)       731,902
1,240,000 Watco Cos. LLC/Watco Finance Corp., 6.50%, 6/15/27 (144A)    1,234,944
  Total Transportation    $5,811,051
  Total Corporate Bonds
(Cost $301,505,189) 		 $299,487,273
Shares            
  Convertible Preferred Stock —
0.4% of Net Assets 		 
  Banks — 0.4%  
752(g) Wells Fargo & Co., 7.50% $     894,105
  Total Banks      $894,105
  Total Convertible Preferred Stock
(Cost $950,539) 		     $894,105
  Preferred Stock — 0.0%† of Net
Assets 		 
  Internet — 0.0%†  
129,055 MYT Holding LLC, 10.00%, 6/6/29 $      22,585
  Total Internet       $22,585
  Total Preferred Stock
(Cost $235,605) 		      $22,585
  Right/Warrant — 0.0%† of Net Assets  
  Trading Companies & Distributors — 0.0%†  
GBP21,700(b) Avation Plc, 1/1/59 $       7,544
  Total Trading Companies & Distributors        $7,544
  Total Right/Warrant
(Cost $—) 		       $7,544
Pioneer High Income Fund, Inc. | 6/30/2416
Schedule of Investments  |  6/30/24
(unaudited) (continued)
Principal
Amount
USD ($) 		          Value
  Insurance-Linked Securities — 6.0%
of Net Assets# 		 
  Event Linked Bonds — 1.5%  
  Earthquakes – Mexico — 0.1%  
250,000(a) International Bank for Reconstruction & Development, 18.85%, (SOFR + 1,372 bps), 4/28/28 (144A) $     246,050
  Flood – U.S. — 0.3%  
250,000(a) FloodSmart Re, 17.185%, (3 Month U.S. Treasury Bill + 1,183 bps), 2/25/25 (144A) $     239,950
250,000(a) FloodSmart Re, 19.355%, (3 Month U.S. Treasury Bill + 1,400 bps), 3/12/27 (144A)       247,500
250,000(a) FloodSmart Re, 22.505%, (1 Month U.S. Treasury Bill + 1,715 bps), 3/11/26 (144A)      245,525
                 $732,975
  Multiperil – U.S. — 0.6%  
250,000(a) Matterhorn Re, 10.625%, (SOFR + 525 bps), 3/24/25 (144A) $     240,075
250,000(a) Matterhorn Re, 13.125%, (SOFR + 775 bps), 3/24/25 (144A)       239,175
250,000(a) Merna Re II, 12.605%, (3 Month U.S. Treasury Bill + 725 bps), 7/7/27 (144A)       247,318
250,000(a) Merna Re II, 13.855%, (3 Month U.S. Treasury Bill + 850 bps), 7/7/27 (144A)       247,894
250,000(a) Mystic Re, 17.355%, (3 Month U.S. Treasury Bill + 1,200 bps), 1/8/27 (144A)       248,575
250,000(a) Residential Re, 17.375%, (3 Month U.S. Treasury Bill + 1,202 bps), 12/6/25 (144A)      234,325
               $1,457,362
  Multiperil – U.S. & Canada — 0.2%  
250,000(a) Atlas Capital, 17.873%, (SOFR + 1,250 bps), 6/8/27 (144A) $     261,850
250,000(a) Easton Re, 12.855%, (3 Month U.S. Treasury Bill + 750 bps), 1/8/27 (144A)      243,600
                 $505,450
  Windstorm – Florida — 0.2%  
250,000(a) Marlon Re, 12.355%, (3 Month U.S. Treasury Bill + 700 bps), 6/7/27 (144A) $     249,925
250,000(a) Merna Re II, 14.105%, (3 Month U.S. Treasury Bill + 875 bps), 7/7/27 (144A)      248,286
                 $498,211
17Pioneer High Income Fund, Inc. | 6/30/24
Principal
Amount
USD ($) 		          Value
  Windstorm – U.S. — 0.1%  
250,000(a) Bonanza Re, 13.805%, (3 Month U.S. Treasury Bill + 845 bps), 1/8/26 (144A) $     251,350
  Total Event Linked Bonds    $3,691,398
Face
Amount
USD ($) 		           
  Collateralized Reinsurance — 0.5%  
  Multiperil – Massachusetts — 0.1%  
350,000(b)(j)+ Portsalon Re 2022, 5/31/28 $     320,922
  Multiperil – U.S. — 0.2%  
250,000(b)(j)+ Ballybunion Re 2023, 12/31/28 $      93,988
250,000(b)(j)+ Mangrove Risk Solutions, 5/10/25 (144A)      231,025
                 $325,013
  Multiperil – Worldwide — 0.0%†  
500,000(b)(j)+ Cypress Re 2017, 1/31/25 $          50
  Windstorm – U.S. — 0.1%  
250,000(b)(j)+ PI0048 RE 2024, 11/30/27 $     219,000
  Windstorm – U.S. Regional — 0.1%  
250,000(b)(j)+ Oakmont Re 2024, 4/1/30 $     233,666
  Total Collateralized Reinsurance    $1,098,651
  Reinsurance Sidecars — 4.0%  
  Multiperil – U.S. — 0.0%†  
500,000(b)(k)+ Harambee Re 2018, 12/31/24 $          —
600,000(k)+ Harambee Re 2019, 12/31/24        1,200
                   $1,200
  Multiperil – Worldwide — 4.0%  
40,466(b)(k)+ Alturas Re 2022-2, 12/31/27 $       3,189
1,500,000(j)+ Bantry Re 2024, 12/31/29     1,597,244
1,000,000(b)(j)+ Berwick Re 2024-1, 12/31/29     1,053,007
500,000(j)+ Eccleston Re 2023, 11/30/28        38,633
750,000(b)(j)+ Gleneagles Re 2022, 12/31/27       293,955
1,000,000(j)+ Gullane Re 2024, 12/31/29     1,019,375
499,318(b)(k)+ Lorenz Re 2019, 6/30/25         4,544
1,000,000(b)(j)+ Merion Re 2022-2, 12/31/27       948,111
350,000(b)(j)+ Pangaea Re 2023-3, 5/31/29       420,000
500,000(j)+ Pangaea Re 2024-1, 12/31/29       533,244
2,357(j)+ Sector Re V, 12/1/27 (144A)        70,782
Pioneer High Income Fund, Inc. | 6/30/2418
Schedule of Investments  |  6/30/24
(unaudited) (continued)
Face
Amount
USD ($) 		          Value
  Multiperil – Worldwide — (continued)  
500,000(b)(j)+ Sector Re V, 12/1/28 (144A) $     581,067
1,000,000(b)(j)+ Sector Re V, 12/1/28 (144A)     1,162,133
250,000(j)+ Sussex Re 2020-1, 12/31/24           325
1,500,000(k)+ Thopas Re 2022, 12/31/27            —
1,596,147(b)(k)+ Thopas Re 2023, 12/31/28            —
1,596,147(k)+ Thopas Re 2024, 12/31/29     1,756,081
244,914(b)(j)+ Woburn Re 2019, 12/31/24       33,713
               $9,515,403
  Total Reinsurance Sidecars    $9,516,603
  Total Insurance-Linked Securities
(Cost $13,576,670) 		  $14,306,652
Principal
Amount
USD ($) 		           
  Foreign Government Bond — 0.1% of
Net Assets 		 
  Russia — 0.1%  
382,800(i)(l) Russian Government International Bond, 7.500%, 3/31/30 $     269,771
  Total Russia      $269,771
  Total Foreign Government Bond
(Cost $320,870) 		     $269,771
19Pioneer High Income Fund, Inc. | 6/30/24
Shares           Value
  SHORT TERM INVESTMENTS — 1.0% of
Net Assets 		 
  Open-End Fund — 1.0%  
2,286,520(m) Dreyfus Government Cash Management,
Institutional Shares, 5.19% 		$   2,286,520
               $2,286,520
  TOTAL SHORT TERM INVESTMENTS
(Cost $2,286,520) 		   $2,286,520
  TOTAL INVESTMENTS IN UNAFFILIATED ISSUERS — 144.2%
(Cost $345,226,315) 		 $344,319,060
  OTHER ASSETS AND LIABILITIES — (44.2)% $(105,505,524)
  net assets — 100.0%  $238,813,536
             
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 June 30, 2024, the value of these securities amounted to $268,932,511, or 112.6% of net assets.
(a) Floating rate note. Coupon rate, reference index and spread shown at June 30, 2024.
(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 June 30, 2024.
(d) Security is priced as a unit.
(e) Security issued with a zero coupon. Income is recognized through accretion of discount.
(f) Payment-in-kind (PIK) security which may pay interest in the form of additional principal amount.
(g) Security is perpetual in nature and has no stated maturity date.
(h) Securities purchased on a when-issued basis. Rates do not take effect until settlement date.
(i) Security is in default.
(j) Issued as participation notes.
(k) Issued as preference shares.
(l) Debt obligation initially issued at one coupon which converts to a higher coupon at a specific date. The rate shown is the rate at June 30, 2024.
Pioneer High Income Fund, Inc. | 6/30/2420
Schedule of Investments  |  6/30/24
(unaudited) (continued)
(m) Rate periodically changes. Rate disclosed is the 7-day yield at June 30, 2024.
* 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 June 30, 2024.
+ 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 $— $3,189
Atlas Capital 5/24/2024 250,000 261,850
Ballybunion Re 2023 3/20/2023 65,435 93,988
Bantry Re 2024 2/1/2024 1,482,365 1,597,244
Berwick Re 2024-1 1/10/2024 1,000,000 1,053,007
Bonanza Re 1/6/2023 250,000 251,350
Cypress Re 2017 1/24/2017 1,681 50
Easton Re 5/16/2024 246,396 243,600
Eccleston Re 2023 7/13/2023 — 38,633
FloodSmart Re 2/14/2022 250,000 239,950
FloodSmart Re 2/23/2023 250,000 245,525
FloodSmart Re 2/29/2024 250,000 247,500
Gleneagles Re 2022 1/18/2022 313,226 293,955
Gullane Re 2024 2/14/2024 969,259 1,019,375
Harambee Re 2018 12/19/2017 10,612 —
Harambee Re 2019 12/20/2018 — 1,200
International Bank for Reconstruction & Development 5/10/2024 241,893 246,050
Lorenz Re 2019 6/26/2019 81,342 4,544
Mangrove Risk Solutions 6/17/2024 225,663 231,025
Marlon Re 5/24/2024 250,000 249,925
Matterhorn Re 3/10/2022 250,000 240,075
Matterhorn Re 3/10/2022 250,000 239,175
Merion Re 2022-2 2/22/2022 1,000,000 948,111
Merna Re II 5/8/2024 250,000 247,318
Merna Re II 5/8/2024 250,000 248,286
Merna Re II 5/8/2024 250,000 247,894
Mystic Re 5/21/2024 249,156 248,575
Oakmont Re 2024 5/23/2024 221,839 233,666
Pangaea Re 2023-3 7/5/2023 350,000 420,000
Pangaea Re 2024-1 2/27/2024 500,000 533,244
PI0048 RE 2024 6/12/2024 210,612 219,000
21Pioneer High Income Fund, Inc. | 6/30/24
Restricted Securities Acquisition date Cost Value
Portsalon Re 2022 7/15/2022 $283,022 $320,922
Residential Re 10/28/2021 250,000 234,325
Sector Re V 12/30/2022 — 70,782
Sector Re V 12/4/2023 500,000 581,067
Sector Re V 12/29/2023 1,000,000 1,162,133
Sussex Re 2020-1 1/23/2020 — 325
Thopas Re 2022 2/7/2022 — —
Thopas Re 2023 2/15/2023 — —
Thopas Re 2024 2/2/2024 1,596,147 1,756,081
Woburn Re 2019 1/30/2019 28,022 33,713
Total Restricted Securities     $14,306,652
% of Net assets     6.0%
FORWARD FOREIGN CURRENCY EXCHANGE CONTRACTS
Currency
Purchased 		In
Exchange for 		Currency
Sold 		Deliver Counterparty Settlement
Date 		Unrealized
Appreciation
(Depreciation)
USD 1,325,861 EUR 1,220,000 Bank of America NA 7/26/24 $17,525
EUR 297,000 USD 323,217 Citibank NA 8/28/24 (4,192)
EUR 5,000,000 USD 5,370,985 State Street Bank & Trust Co. 9/27/24 7,113
USD 5,698,700 EUR 5,332,500 State Street Bank & Trust Co. 7/26/24 (19,910)
USD 767,891 GBP 605,000 State Street Bank & Trust Co. 9/27/24 2,601
TOTAL FORWARD FOREIGN CURRENCY EXCHANGE CONTRACTS $3,137
Pioneer High Income Fund, Inc. | 6/30/2422
Schedule of Investments  |  6/30/24
(unaudited) (continued)
SWAP CONTRACTS
OVER THE COUNTER (OTC) CREDIT DEFAULT SWAP CONTRACTS – SELL PROTECTION
Notional
Amount ($)(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% 6/20/27 $(54,558) $127,897 $73,339
329,000 JPMorgan Chase Bank NA United Airlines Holdings, Inc. Receive 5.00% 6/20/27 (20,702) 45,124 24,422
433,000 JPMorgan Chase Bank NA United Airlines Holdings, Inc. Receive 5.00% 6/20/27 (27,262) 59,404 32,142
TOTAL OVER THE COUNTER (OTC) CREDIT
DEFAULT SWAP CONTRACTS – SELL PROTECTION 		$(102,522) $232,425 $129,903
TOTAL SWAP CONTRACTS   $(102,522) $232,425 $129,903
   
(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.
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).
23Pioneer High Income Fund, Inc. | 6/30/24
The following is a summary of the inputs used as of June 30, 2024 in valuing the Fund’s investments:
  Level 1 Level 2 Level 3 Total
Senior Secured Floating Rate Loan Interests $— $4,789,249 $— $4,789,249
Common Stocks        
Chemicals 2,104 — — 2,104
Communications Equipment — — 5,260 5,260
Oil, Gas & Consumable Fuels 142 5,222 — 5,364
Professional Services — — 8 8
All Other Common Stocks — 1,209,656 — 1,209,656
Asset Backed Securities — 1,529,419 — 1,529,419
Collateralized Mortgage Obligations — 5,735,084 — 5,735,084
Commercial Mortgage-Backed Securities — 7,393,109 — 7,393,109
Convertible Corporate Bonds — 6,375,357 — 6,375,357
Corporate Bonds — 299,487,273 —* 299,487,273
Convertible Preferred Stock 894,105 — — 894,105
Preferred Stock — 22,585 — 22,585
Right/Warrant 7,544 — — 7,544
Insurance-Linked Securities        
Collateralized Reinsurance        
Multiperil – Massachusetts — — 320,922 320,922
Multiperil – U.S. — — 325,013 325,013
Multiperil – Worldwide — — 50 50
Windstorm – U.S. — — 219,000 219,000
Windstorm – U.S. Regional — — 233,666 233,666
Reinsurance Sidecars        
Multiperil – U.S. — — 1,200 1,200
Multiperil – Worldwide — — 9,515,403 9,515,403
All Other Insurance-Linked Securities — 3,691,398 — 3,691,398
Foreign Government Bond — 269,771 — 269,771
Open-End Fund 2,286,520 — — 2,286,520
Total Investments in Securities $3,190,415 $330,508,123 $10,620,522 $344,319,060
Other Financial Instruments        
Net unrealized appreciation on forward foreign currency exchange contracts $— $3,137 $— $3,137
OTC swap contracts, at value — 129,903 — 129,903
Total Other Financial Instruments $— $133,040 $— $133,040
* Securities valued at $0.
Pioneer High Income Fund, Inc. | 6/30/2424
Schedule of Investments  |  6/30/24
(unaudited) (continued)
The following is a reconciliation of assets valued using significant unobservable inputs (Level 3):
  Common
Stocks 		Corporate
Bonds 		Insurance-
Linked
Securities 		Total
Balance as of 3/31/24 $9,205 $— $10,040,668 $10,049,873
Realized gain (loss)(1) — — 1 1
Changed in unrealized appreciation (depreciation)(2) (3,945) (379,566) 136,922 (246,589)
Accrued discounts/premiums — — (219,596) (219,596)
Purchases — — 657,260 657,260
Sales — — (1) (1)
Transfers in to Level 3* 8 379,566 — 379,574
Transfers out of Level 3* — — — —
Balance as of 6/30/24 $5,268 $— $10,615,254 $10,620,522
(1) Realized gain (loss) on these securities is included in the realized gain (loss) from investments on the Statement of Operations.
(2) Unrealized appreciation (depreciation) on these securities is included in the change in unrealized appreciation (depreciation) from investments on the Statement of Operations.
* Transfers are calculated on the beginning of period values. During the period ended June 30, 2024, investments having aggregate value of $379,574 were transferred from Level 2 to Level 3, due to valuing the security using unobservable inputs. There were no other transfers between Levels 1, 2 and 3.
Net change in unrealized appreciation (depreciation) of Level 3 investments still held and considered Level 3 at June 30, 2024: $(146,824)
25Pioneer High Income Fund, Inc. | 6/30/24
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