Pioneer Corporate
High Yield Fund
Schedule of Investments  |  November 30, 2023 
     
A: RCRAX C: RCRCX Y: RCRYX

Schedule of Investments  |  11/30/23
(unaudited) 
Principal
Amount
USD ($)
          Value
  UNAFFILIATED ISSUERS — 96.7%  
  Corporate Bonds — 94.1% of Net Assets  
  Advertising — 2.4%  
275,000 Clear Channel Outdoor Holdings, Inc., 7.50%, 6/1/29 (144A) $   216,747
100,000 Outfront Media Capital LLC/Outfront Media Capital Corp., 4.25%, 1/15/29 (144A)      86,368
378,000 Stagwell Global LLC, 5.625%, 8/15/29 (144A)    331,222
301,000 Summer BC Bidco B LLC, 5.50%, 10/31/26 (144A)    269,441
  Total Advertising    $903,778
  Aerospace & Defense — 0.3%  
110,000 Spirit AeroSystems, Inc., 9.375%, 11/30/29 (144A) $   118,942
  Total Aerospace & Defense    $118,942
  Airlines — 1.1%  
63,700 American Airlines 2021-1 Class B Pass Through Trust, 3.95%, 7/11/30 $    55,424
357,000 VistaJet Malta Finance Plc/Vista Management Holding, Inc., 6.375%, 2/1/30 (144A)    249,667
120,000 VistaJet Malta Finance Plc/Vista Management Holding, Inc., 9.50%, 6/1/28 (144A)     99,545
  Total Airlines    $404,636
  Apparel — 0.3%  
115,000 Hanesbrands, Inc., 9.00%, 2/15/31 (144A) $   108,411
  Total Apparel    $108,411
  Auto Manufacturers — 2.7%  
125,000 Ford Motor Co., 5.291%, 12/8/46 $   101,607
100,000 Ford Motor Co., 6.10%, 8/19/32      97,290
700,000 Ford Motor Credit Co. LLC, 3.625%, 6/17/31    581,474
230,000 Ford Motor Credit Co. LLC, 4.125%, 8/17/27    212,548
  Total Auto Manufacturers    $992,919
  Auto Parts & Equipment — 1.3%  
200,000 Adient Global Holdings, Ltd., 8.25%, 4/15/31 (144A) $   203,345
288,000 Dealer Tire LLC/DT Issuer LLC, 8.00%, 2/1/28 (144A)    273,039
  Total Auto Parts & Equipment    $476,384
  Banks — 0.1%  
45,000 Freedom Mortgage Corp., 12.25%, 10/1/30 (144A) $    47,480
  Total Banks     $47,480
1Pioneer Corporate High Yield Fund |  | 11/30/23

Principal
Amount
USD ($)
          Value
  Building Materials — 2.2%  
280,000 AmeriTex HoldCo Intermediate LLC, 10.25%, 10/15/28 (144A) $   273,700
260,000 Builders FirstSource, Inc., 4.25%, 2/1/32 (144A)    223,031
290,000 Cornerstone Building Brands, Inc., 6.125%, 1/15/29 (144A)    227,650
118,000 MIWD Holdco II LLC/MIWD Finance Corp., 5.50%, 2/1/30 (144A)     99,976
  Total Building Materials    $824,357
  Chemicals — 4.3%  
363,000 Mativ Holdings, Inc., 6.875%, 10/1/26 (144A) $   334,925
120,000 NOVA Chemicals Corp., 8.50%, 11/15/28 (144A)    123,960
490,000 Olympus Water US Holding Corp., 9.75%, 11/15/28 (144A)    503,991
200,000 SCIL IV LLC/SCIL USA Holdings LLC, 5.375%, 11/1/26 (144A)    187,746
EUR100,000 SCIL IV LLC/SCIL USA Holdings LLC, 9.50%, 7/15/28 (144A)    112,257
370,000 Trinseo Materials Operating SCA/Trinseo Materials Finance, Inc., 5.125%, 4/1/29 (144A)    143,742
251,000 Tronox, Inc., 4.625%, 3/15/29 (144A)    213,415
  Total Chemicals $1,620,036
  Commercial Services — 5.4%  
20,000 Allied Universal Holdco LLC/Allied Universal Finance Corp., 6.625%, 7/15/26 (144A) $    19,434
275,000 Allied Universal Holdco LLC/Allied Universal Finance Corp., 9.75%, 7/15/27 (144A)    253,029
232,000 Brink's Co., 4.625%, 10/15/27 (144A)    217,484
218,000 Garda World Security Corp., 4.625%, 2/15/27 (144A)    207,280
243,000 Garda World Security Corp., 6.00%, 6/1/29 (144A)    202,377
215,000 Neptune Bidco US, Inc., 9.29%, 4/15/29 (144A)    199,668
190,000 NESCO Holdings II, Inc., 5.50%, 4/15/29 (144A)    170,357
27,000 Prime Security Services Borrower LLC/Prime Finance, Inc., 5.25%, 4/15/24 (144A)      26,840
420,000 Prime Security Services Borrower LLC/Prime Finance, Inc., 6.25%, 1/15/28 (144A)    403,312
325,000 Sotheby's, 7.375%, 10/15/27 (144A)    298,043
  Total Commercial Services $1,997,824
Pioneer Corporate High Yield Fund |  | 11/30/232

Schedule of Investments  |  11/30/23
(unaudited) (continued)
Principal
Amount
USD ($)
          Value
  Computers — 1.7%  
540,000 NCR Voyix Corp., 5.00%, 10/1/28 (144A) $   491,589
150,000 NCR Voyix Corp., 5.25%, 10/1/30 (144A)    131,856
  Total Computers    $623,445
  Diversified Financial Services — 6.7%  
248,443(a) Avation Capital S.A., 8.25% (9.00% PIK or 8.25% Cash), 10/31/26 (144A) $   211,176
65,000 Bread Financial Holdings, Inc., 4.75%, 12/15/24 (144A)      63,365
250,000 Bread Financial Holdings, Inc., 7.00%, 1/15/26 (144A)    240,442
250,000 GGAM Finance, Ltd., 8.00%, 6/15/28 (144A)    251,875
444,722(a) Global Aircraft Leasing Co., Ltd., 6.50% (7.25% PIK or 6.50% Cash), 9/15/24 (144A)    416,011
240,000 Nationstar Mortgage Holdings, Inc., 6.00%, 1/15/27 (144A)    231,600
226,000 OneMain Finance Corp., 3.875%, 9/15/28    194,073
180,000 OneMain Finance Corp., 9.00%, 1/15/29    185,641
242,000 Provident Funding Associates LP/PFG Finance Corp., 6.375%, 6/15/25 (144A)    219,642
201,000 United Wholesale Mortgage LLC, 5.50%, 4/15/29 (144A)    179,828
305,000 United Wholesale Mortgage LLC, 5.75%, 6/15/27 (144A)    286,766
  Total Diversified Financial Services $2,480,419
  Electric — 3.8%  
222,000 Calpine Corp., 4.625%, 2/1/29 (144A) $   201,069
215,000 Clearway Energy Operating LLC, 3.75%, 2/15/31 (144A)    179,885
85,000 Clearway Energy Operating LLC, 3.75%, 1/15/32 (144A)      68,332
153,000 Leeward Renewable Energy Operations LLC, 4.25%, 7/1/29 (144A)    128,721
28,146 NSG Holdings LLC/NSG Holdings, Inc., 7.75%, 12/15/25 (144A)      28,107
140,000 Talen Energy Supply LLC, 8.625%, 6/1/30 (144A)    146,667
55,000 Vistra Operations Co. LLC, 4.375%, 5/1/29 (144A)      49,653
257,000 Vistra Operations Co. LLC, 5.625%, 2/15/27 (144A)    249,987
50,000 Vistra Operations Co. LLC, 6.95%, 10/15/33 (144A)      51,045
320,000 Vistra Operations Co. LLC, 7.75%, 10/15/31 (144A)    327,499
  Total Electric $1,430,965
  Electrical Components & Equipments — 0.6%  
253,000 Energizer Holdings, Inc., 4.75%, 6/15/28 (144A) $   226,148
  Total Electrical Components & Equipments    $226,148
3Pioneer Corporate High Yield Fund |  | 11/30/23

Principal
Amount
USD ($)
          Value
  Entertainment — 1.6%  
225,000 Banijay Entertainment SASU, 8.125%, 5/1/29 (144A) $   226,871
214,000 Light & Wonder International, Inc., 7.25%, 11/15/29 (144A)    214,535
45,000 Light & Wonder International, Inc., 7.50%, 9/1/31 (144A)      45,660
110,000 Scientific Games Holdings LP/Scientific Games US FinCo, Inc., 6.625%, 3/1/30 (144A)     98,450
  Total Entertainment    $585,516
  Environmental Control — 1.0%  
130,000 GFL Environmental, Inc., 4.00%, 8/1/28 (144A) $   115,987
270,000 GFL Environmental, Inc., 4.375%, 8/15/29 (144A)    238,426
  Total Environmental Control    $354,413
  Food — 0.2%  
95,000 US Foods, Inc., 4.625%, 6/1/30 (144A) $    85,711
  Total Food     $85,711
  Forest Products & Paper — 0.7%  
334,000 Mercer International, Inc., 5.125%, 2/1/29 $   278,932
  Total Forest Products & Paper    $278,932
  Healthcare-Products — 0.6%  
255,000 Medline Borrower LP, 3.875%, 4/1/29 (144A) $   226,324
  Total Healthcare-Products    $226,324
  Healthcare-Services — 2.7%  
229,000 LifePoint Health, Inc., 5.375%, 1/15/29 (144A) $   149,975
318,000 Prime Healthcare Services, Inc., 7.25%, 11/1/25 (144A)    298,626
54,000 RegionalCare Hospital Partners Holdings, Inc./LifePoint Health, Inc., 9.75%, 12/1/26 (144A)      52,211
36,000 Surgery Center Holdings, Inc., 6.75%, 7/1/25 (144A)      35,730
247,000 Surgery Center Holdings, Inc., 10.00%, 4/15/27 (144A)    249,253
260,000 US Acute Care Solutions LLC, 6.375%, 3/1/26 (144A)    204,750
  Total Healthcare-Services    $990,545
  Home Builders — 2.4%  
350,000 Beazer Homes USA, Inc., 7.25%, 10/15/29 $   338,333
157,000 KB Home, 4.00%, 6/15/31    132,794
255,000 LGI Homes, Inc., 8.75%, 12/15/28 (144A)    262,293
205,000 M/I Homes, Inc., 3.95%, 2/15/30    174,956
  Total Home Builders    $908,376
Pioneer Corporate High Yield Fund |  | 11/30/234

Schedule of Investments  |  11/30/23
(unaudited) (continued)
Principal
Amount
USD ($)
          Value
  Household Products/Wares — 0.9%  
400,000 Spectrum Brands, Inc., 3.875%, 3/15/31 (144A) $   341,452
  Total Household Products/Wares    $341,452
  Iron & Steel — 1.9%  
519,000 Commercial Metals Co., 3.875%, 2/15/31 $   440,400
360,000 TMS International Corp., 6.25%, 4/15/29 (144A)    285,461
  Total Iron & Steel    $725,861
  Leisure Time — 4.2%  
55,000 Carnival Holdings Bermuda, Ltd., 10.375%, 5/1/28 (144A) $    59,807
290,000 NCL Corp., Ltd., 5.875%, 3/15/26 (144A)    274,775
255,000 NCL Corp., Ltd., 7.75%, 2/15/29 (144A)    241,554
95,000 NCL Corp., Ltd., 8.125%, 1/15/29 (144A)      96,735
75,000 NCL Finance, Ltd., 6.125%, 3/15/28 (144A)      68,053
120,000 Royal Caribbean Cruises, Ltd., 5.50%, 4/1/28 (144A)    114,638
20,000 Royal Caribbean Cruises, Ltd., 7.25%, 1/15/30 (144A)      20,372
200,000 Royal Caribbean Cruises, Ltd., 11.625%, 8/15/27 (144A)    216,910
210,000 Viking Cruises, Ltd., 5.875%, 9/15/27 (144A)    197,711
290,000 Viking Ocean Cruises Ship VII, Ltd., 5.625%, 2/15/29 (144A)    268,250
  Total Leisure Time $1,558,805
  Lodging — 0.5%  
202,000 Travel + Leisure Co., 6.625%, 7/31/26 (144A) $   201,912
  Total Lodging    $201,912
  Media — 3.6%  
355,000 CCO Holdings LLC/CCO Holdings Capital Corp., 4.50%, 6/1/33 (144A) $   284,023
121,000 CCO Holdings LLC/CCO Holdings Capital Corp., 4.75%, 3/1/30 (144A)    105,895
160,000 CCO Holdings LLC/CCO Holdings Capital Corp., 4.75%, 2/1/32 (144A)    134,398
55,000 CCO Holdings LLC/CCO Holdings Capital Corp., 7.375%, 3/1/31 (144A)      55,026
372,000 CSC Holdings LLC, 4.625%, 12/1/30 (144A)    204,882
243,000 CSC Holdings LLC, 5.375%, 2/1/28 (144A)    206,607
362,000 McGraw-Hill Education, Inc., 8.00%, 8/1/29 (144A)    326,253
25,000 VZ Secured Financing BV, 5.00%, 1/15/32 (144A)     20,504
  Total Media $1,337,588
  Mining — 3.7%  
191,000 Coeur Mining, Inc., 5.125%, 2/15/29 (144A) $   164,526
5Pioneer Corporate High Yield Fund |  | 11/30/23

Principal
Amount
USD ($)
          Value
  Mining — (continued)  
250,000 Constellium SE, 3.75%, 4/15/29 (144A) $   218,981
235,000 Eldorado Gold Corp., 6.25%, 9/1/29 (144A)    211,857
265,000 First Quantum Minerals, Ltd., 7.50%, 4/1/25 (144A)    245,125
325,000 First Quantum Minerals, Ltd., 8.625%, 6/1/31 (144A)    262,844
339,000 IAMGOLD Corp., 5.75%, 10/15/28 (144A)    274,749
  Total Mining $1,378,082
  Oil & Gas — 11.3%  
302,000 Aethon United BR LP/Aethon United Finance Corp., 8.25%, 2/15/26 (144A) $   303,510
211,000 Baytex Energy Corp., 8.75%, 4/1/27 (144A)    216,452
110,000 CITGO Petroleum Corp., 8.375%, 1/15/29 (144A)    110,891
160,000 Civitas Resources, Inc., 8.375%, 7/1/28 (144A)    163,870
65,000 Civitas Resources, Inc., 8.625%, 11/1/30 (144A)      67,322
160,000 Civitas Resources, Inc., 8.75%, 7/1/31 (144A)    165,595
302,000 Energean Plc, 6.50%, 4/30/27 (144A)    265,610
90,000 Hilcorp Energy I LP/Hilcorp Finance Co., 6.00%, 4/15/30 (144A)      83,952
90,000 Hilcorp Energy I LP/Hilcorp Finance Co., 6.25%, 4/15/32 (144A)      83,124
116,182 International Petroleum Corp., 7.25%, 2/1/27 (144A)    107,875
400,000 Kosmos Energy, Ltd., 7.75%, 5/1/27 (144A)    367,680
190,000 Matador Resources Co., 6.875%, 4/15/28 (144A)    190,424
300,000 Neptune Energy Bondco Plc, 6.625%, 5/15/25 (144A)    298,590
220,000 Parkland Corp., 4.625%, 5/1/30 (144A)    196,350
208,000 Precision Drilling Corp., 6.875%, 1/15/29 (144A)    196,562
200,000 Seadrill Finance, Ltd., 8.375%, 8/1/30 (144A)    204,910
270,000 Shelf Drilling Holdings, Ltd., 9.625%, 4/15/29 (144A)    259,783
324,000 Southwestern Energy Co., 5.375%, 3/15/30    307,204
109,250 Transocean, Inc., 8.75%, 2/15/30 (144A)    111,576
40,000 Transocean Titan Financing, Ltd., 8.375%, 2/1/28 (144A)      40,800
260,000 Tullow Oil Plc, 10.25%, 5/15/26 (144A)    230,100
230,000 Valaris, Ltd., 8.375%, 4/30/30 (144A)    231,373
  Total Oil & Gas $4,203,553
  Oil & Gas Services — 0.5%  
215,000 Enerflex, Ltd., 9.00%, 10/15/27 (144A) $   202,439
  Total Oil & Gas Services    $202,439
  Packaging & Containers — 4.0%  
235,000 Cascades Inc/Cascades USA, Inc., 5.375%, 1/15/28 (144A) $   221,500
Pioneer Corporate High Yield Fund |  | 11/30/236

Schedule of Investments  |  11/30/23
(unaudited) (continued)
Principal
Amount
USD ($)
          Value
  Packaging & Containers — (continued)  
344,000 Clearwater Paper Corp., 4.75%, 8/15/28 (144A) $   306,981
125,000 Crown Cork & Seal Co., Inc., 7.375%, 12/15/26    128,919
189,000 OI European Group BV, 4.75%, 2/15/30 (144A)    170,100
225,000 Owens-Brockway Glass Container, Inc., 7.25%, 5/15/31 (144A)    223,315
195,000 Sealed Air Corp., 5.00%, 4/15/29 (144A)    181,787
95,000 Sealed Air Corp., 7.25%, 2/15/31 (144A)      97,251
164,000 TriMas Corp., 4.125%, 4/15/29 (144A)    142,564
  Total Packaging & Containers $1,472,417
  Pharmaceuticals — 3.9%  
395,000 AdaptHealth LLC, 5.125%, 3/1/30 (144A) $   314,503
350,000 Owens & Minor, Inc., 6.625%, 4/1/30 (144A)    327,794
391,000 P&L Development LLC/PLD Finance Corp., 7.75%, 11/15/25 (144A)    255,128
185,000 Par Pharmaceutical, Inc., 7.50%, 4/1/27 (144A)    116,550
260,000 Teva Pharmaceutical Finance Netherlands III BV, 5.125%, 5/9/29    241,704
200,000 Teva Pharmaceutical Finance Netherlands III BV, 7.875%, 9/15/29    208,465
  Total Pharmaceuticals $1,464,144
  Pipelines — 5.9%  
202,000 CQP Holdco LP/BIP-V Chinook Holdco LLC, 5.50%, 6/15/31 (144A) $   186,837
330,000 Delek Logistics Partners LP/Delek Logistics Finance Corp., 7.125%, 6/1/28 (144A)    310,909
405,000(b)(c) Energy Transfer LP, 7.125% (5 Year CMT Index + 531 bps)    358,615
357,000 EnLink Midstream Partners LP, 5.60%, 4/1/44    304,207
228,000 EQM Midstream Partners LP, 4.75%, 1/15/31 (144A)    203,064
185,000 Genesis Energy LP/Genesis Energy Finance Corp., 8.00%, 1/15/27    185,170
369,000 Harvest Midstream I LP, 7.50%, 9/1/28 (144A)    363,607
30,000 Venture Global LNG, Inc., 8.125%, 6/1/28 (144A)      29,744
185,000 Venture Global LNG, Inc., 8.375%, 6/1/31 (144A)    182,286
70,000 Venture Global LNG, Inc., 9.50%, 2/1/29 (144A)     72,226
  Total Pipelines $2,196,665
  Real Estate — 0.6%  
270,000 Kennedy-Wilson, Inc., 4.75%, 2/1/30 $   206,388
  Total Real Estate    $206,388
7Pioneer Corporate High Yield Fund |  | 11/30/23

Principal
Amount
USD ($)
          Value
  REITs — 2.0%  
35,000 GLP Capital LP/GLP Financing II, Inc., 6.75%, 12/1/33 $    35,342
101,000 HAT Holdings I LLC/HAT Holdings II LLC , 3.375%, 6/15/26 (144A)      91,428
108,000 Iron Mountain, Inc., 7.00%, 2/15/29 (144A)    108,858
300,000 MPT Operating Partnership LP/MPT Finance Corp., 3.50%, 3/15/31    184,929
348,000 Uniti Group LP/Uniti Group Finance, Inc./CSL Capital LLC, 10.50%, 2/15/28 (144A)    342,300
  Total REITs    $762,857
  Retail — 4.5%  
181,000 Asbury Automotive Group, Inc., 4.625%, 11/15/29 (144A) $   163,009
190,000 Bath & Body Works, Inc., 6.625%, 10/1/30 (144A)    188,060
220,000 Beacon Roofing Supply, Inc., 4.125%, 5/15/29 (144A)    194,286
190,000 Brinker International, Inc., 8.25%, 7/15/30 (144A)    190,739
90,000 Gap, Inc., 3.625%, 10/1/29 (144A)      74,093
50,000 Gap, Inc., 3.875%, 10/1/31 (144A)      39,492
278,000 Ken Garff Automotive LLC, 4.875%, 9/15/28 (144A)    247,223
435,000 LCM Investments Holdings II LLC, 4.875%, 5/1/29 (144A)    380,119
235,000 Murphy Oil USA, Inc., 3.75%, 2/15/31 (144A)    199,430
  Total Retail $1,676,451
  Software — 0.5%  
232,000 AthenaHealth Group, Inc., 6.50%, 2/15/30 (144A) $   201,098
  Total Software    $201,098
  Telecommunications — 2.1%  
378,000 Altice France Holding S.A., 6.00%, 2/15/28 (144A) $   152,666
244,000 Level 3 Financing, Inc., 10.50%, 5/15/30 (144A)    226,310
500,000 Windstream Escrow LLC/Windstream Escrow Finance Corp., 7.75%, 8/15/28 (144A)    412,220
  Total Telecommunications    $791,196
  Transportation — 1.9%  
355,000 Carriage Purchaser, Inc., 7.875%, 10/15/29 (144A) $   280,006
219,000 Danaos Corp., 8.50%, 3/1/28 (144A)    218,992
Pioneer Corporate High Yield Fund |  | 11/30/238

Schedule of Investments  |  11/30/23
(unaudited) (continued)
Principal
Amount
USD ($)
          Value
  Transportation — (continued)  
253,000 Seaspan Corp., 5.50%, 8/1/29 (144A) $   197,542
858,000(d) Western Global Airlines LLC, 10.375%, 8/15/25 (144A)      4,290
  Total Transportation    $700,830
  Total Corporate Bonds
(Cost $39,051,943)
$35,107,299
Shares            
  Right/Warrant — 0.0% of Net Assets  
  Trading Companies & Distributors — 0.0%  
7,525(e) Avation Plc, 1/1/59 $     1,900
  Total Trading Companies & Distributors      $1,900
  Total Right/Warrant
(Cost $—)
     $1,900
Face
Amount
USD ($)
           
  Insurance-Linked Securities — 0.0% of Net
Assets#
 
  Collateralized Reinsurance — 0.0%  
  Multiperil – Worldwide — 0.0%  
250,000(e)(f)+ Cypress Re 2017, 1/31/24 $        25
250,000(e)(f)+ Resilience Re, 5/1/24         —
                    $25
  Total Collateralized Reinsurance         $25
  Reinsurance Sidecars — 0.0%  
  Multiperil – U.S. — 0.0%  
1,500,000(e)(g)+ Harambee Re 2018, 12/31/24 $        —
  Multiperil – Worldwide — 0.0%  
29,857(e)(f)+ Berwick Re 2019-1, 12/31/24 $     4,762
250,000(e)(g)+ Viribus Re 2018, 12/31/24          —
106,153(e)(g)+ Viribus Re 2019, 12/31/24        329
                 $5,091
  Total Reinsurance Sidecars      $5,091
  Total Insurance-Linked Securities
(Cost $41,655)
     $5,116
9Pioneer Corporate High Yield Fund |  | 11/30/23

Shares           Value
  SHORT TERM INVESTMENTS — 2.6% of Net Assets  
  Open-End Fund — 2.6%  
960,614(h) Dreyfus Government Cash Management,
Institutional Shares, 5.24%
$   960,614
               $960,614
  TOTAL SHORT TERM INVESTMENTS
(Cost $960,614)
   $960,614
  TOTAL INVESTMENTS IN UNAFFILIATED ISSUERS — 96.7%
(Cost $40,054,212)
$36,074,929
  OTHER ASSETS AND LIABILITIES — 3.3%  $1,218,464
  net assets — 100.0% $37,293,393
             
bps Basis Points.
CMT Constant Maturity Treasury Index.
REIT Real Estate Investment Trust.
(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 November 30, 2023, the value of these securities amounted to $30,152,884, or 80.9% of net assets.
(a) Payment-in-kind (PIK) security which may pay interest in the form of additional principal amount.
(b) Security is perpetual in nature and has no stated maturity date.
(c) The interest rate is subject to change periodically. The interest rate and/or reference index and spread shown at November 30, 2023.
(d) Security is in default.
(e) Non-income producing security.
(f) Issued as participation notes.
(g) Issued as preference shares.
(h) Rate periodically changes. Rate disclosed is the 7-day yield at November 30, 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
Berwick Re 2019-1 12/31/2018 $3,568 $4,762
Cypress Re 2017 1/24/2017 840 25
Harambee Re 2018 12/19/2017 31,843
Resilience Re 2/8/2017 124
Pioneer Corporate High Yield Fund |  | 11/30/2310

Schedule of Investments  |  11/30/23
(unaudited) (continued)
Restricted Securities Acquisition date Cost Value
Viribus Re 2018 12/22/2017 $5,280 $
Viribus Re 2019 3/25/2019 329
Total Restricted Securities     $5,116
% of Net assets     0.0%
Amount rounds to less than 0.1%.
SWAP CONTRACTS
CENTRALLY CLEARED CREDIT DEFAULT SWAP CONTRACTS – BUY PROTECTION
Notional
Amount ($)(1)
Reference
Obligation/Index
Pay/
Receive(2)
Annual
Fixed Rate
Expiration
Date
Premiums
(Received)
Unrealized
(Depreciation)
Market
Value
4,039,200 Markit CDX North America High Yield Index Series 41 Pay 5.00% 12/20/28 $(52,865) $(145,056) $(197,921)
TOTAL CENTRALLY CLEARED CREDIT DEFAULT
SWAP CONTRACTS – BUY PROTECTION
$(52,865) $(145,056) $(197,921)
   
(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) Pays quarterly.
Principal amounts are denominated in U.S. dollars (“USD”) unless otherwise noted.
EUR — Euro
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 November 30, 2023 in valuing the Fund's investments:
  Level 1 Level 2 Level 3 Total
Corporate Bonds $$35,107,299 $$35,107,299
Right/Warrant 1,900 1,900
Insurance-Linked Securities        
Collateralized Reinsurance        
Multiperil – Worldwide 25 25
11Pioneer Corporate High Yield Fund |  | 11/30/23

  Level 1 Level 2 Level 3 Total
Reinsurance Sidecars        
Multiperil – U.S. $$$—* $—*
Multiperil – Worldwide 5,091 5,091
Open-End Fund 960,614 960,614
Total Investments in Securities $962,514 $35,107,299 $5,116 $36,074,929
Other Financial Instruments        
Swap contracts, at value $$(197,921) $$(197,921)
Total Other Financial Instruments $$(197,921) $$(197,921)
* Securities valued at $0.
During the period ended November 30, 2023, there were no transfers in or out of Level 3.
Pioneer Corporate High Yield Fund |  | 11/30/2312