Pioneer High Yield Fund

Top 10 Portfolio Holdings as of 4/29/2016
Default: sorted by market value

Security Name Par / Shares Market Value
14112z Zero% 01feb19 4,500,000 $134,550
17079z Zero% 31mar18 2,600,000 $182,000
AAF Holdings LLC, 12.375%, 7/1/19 (144A) (PIK) 3,356,544 $3,440,458
Acacn 5% 15mar20 144a 1,920,000 $1,817,067
Acgl Zero% 01jul16 1,500,000 $112,350
Advanced Micro Devices, Inc., 7.0%, 7/1/24 430,000 $333,608
AdvancePierre Foods, Inc., Term Loan (First Lien), 7/10/17 8,263 $8,282
AECOM, 5.875%, 10/15/24 3,210,000 $3,378,882
AES Corp. Virginia, 5.5%, 3/15/24 1,650,000 $1,682,221
Aetna, Inc. 29,704 $3,334,868
Affinion Group, Inc., Tranche B Term Loan, 4/30/18 1,958,096 $1,729,857
Alamo Re, Ltd., Floating Rate Note, 6/7/18 (Cat Bond) (144A) 500,000 $517,419
Alere, Inc., 3.0%, 5/15/16 2,500,000 $2,540,833
Alere, Inc., 3.0% (Perpetual) 7,708 $2,425,476
Allergan plc, 5.5%, 3/1/18 2,700 $2,191,023
Alliance HealthCare Services, Inc., Initial Term Loan, 6/3/19 1,153,824 $1,104,787
Alliance One International, Inc., 9.875%, 7/15/21 7,560,000 $6,513,518
Alliant Holdings I LLC, Initial Term Loan, 7/28/22 366,912 $364,390
Allison Transmission, Inc., Term B-3 Loan, 8/23/19 7,330 $7,353
Ally Financial, Inc., 4.625%, 3/30/25 1,870,000 $1,896,148
Ally Financial, Inc., 4.625%, 5/19/22 1,250,000 $1,307,266
Ally Financial, Inc., 5.75%, 11/20/25 3,150,000 $3,270,417
Alpha Natural Resources, Inc., 3.75%, 12/15/17 4,705,000 $190,160
Altfic 5.5% 15may26 144a 1,055,000 $1,066,356
Altice Financing SA, 6.625%, 2/15/23 (144A) 1,840,000 $1,829,550
Altice US Finance I Corp., 5.375%, 7/15/23 (144A) 1,375,000 $1,425,705
Altrl Zero% 30jun17 1,948,129 $316,961
Amsted Industries, Inc., 5.0%, 3/15/22 (144A) 5,645,000 $5,666,953
Anac 2% 15apr23 144a 1,625,000 $1,866,944
Antero Resources Corp., 6.0%, 12/1/20 2,360,000 $2,423,932
Apex Tool Group LLC, 7.0%, 2/1/21 (144A) 4,901,000 $4,496,668
Archrock Partners LP, 6.0%, 10/1/22 4,500,000 $3,555,000
Archrock Partners LP, 6.0%, 4/1/21 1,850,000 $1,461,500
Ardagh Finance Holdings SA, 8.625%, 6/15/19 (144A) (PIK) 3,975,357 $4,224,148
Ardagh Packaging Finance Plc, 6.75%, 1/31/21 (144A) 3,350,000 $3,415,534
Ardagh Packaging Finance Plc, 7.0%, 11/15/20 (144A) 4,300,000 $741,581
Ardent Legacy Acquisitions, Inc., Term Loan, 7/31/21 717,218 $720,804
Argos Merger Sub, Inc., 7.125%, 3/15/23 (144A) 2,710,000 $2,795,647
Asbury Automotive Group, Inc., 6.0%, 12/15/24 2,900,000 $3,059,983
Ascent Capital Group, Inc., 4.0%, 7/15/20 2,710,000 $1,754,462
Ascent Resources - Utica LLC, 3.5%, 3/1/21 (144A) (PIK) 3,309,652 $145,338
Ascent Resources - Utica Llc 2nd Lien Tl L + 17.5% 01jul19 174,291 $44,009
Axalta Coating Systems US Holdings, Inc., Refinanced Term B Loan, 2/1/20 1,335,638 $1,335,743
Axiall Corp. 1,462 $34,430
Ball Corp., 5.25%, 7/1/25 7,100,000 $7,592,598
Banc of America Commercial Mortgage Trust 2007-5, Floating Rate Note, 2/10/51 1,000,000 $925,610
Bank of America Corp., Floating Rate Note, 10/23/49 475,000 $500,452
Bank of America Corp., Floating Rate Note (Perpetual) 1,375,000 $1,452,584
Bank of America Corp., Floating Rate Note (Perpetual) 3,175,000 $3,200,656
Bear Stearns Commercial Mortgage Securities Trust 2007-PWR16, Floating Rate Note, 6/11/40 (144A) 1,150,000 $1,094,646
BioMarin Pharmaceutical, Inc., 1.5%, 10/15/20 1,920,000 $2,329,280
Bio-Rad Laboratories, Inc. 14,198 $2,013,986
Bios 8.5% 31dec49 Perpetual 742 $67,572
BioScrip, Inc. 255,259 $673,884
BioScrip, Inc., 8.875%, 2/15/21 3,675,000 $3,192,605
BioScrip, Inc., Delayed Draw Term Loan, 7/31/20 1,214,771 $1,117,590
BioScrip, Inc., Initial Term B Loan, 7/31/20 2,024,619 $1,862,650
Bioscrip Inc Wt Cl A 090925 2,136 $0
Bioscrip Inc Wt Cl B 090925 2,136 $0
Blue Racer Midstream LLC, 6.125%, 11/15/22 (144A) 3,150,000 $2,876,716
Brocade Communications Systems, Inc., 1.375%, 1/1/20 (144A) 2,595,000 $2,524,178
Builders FirstSource, Inc., Initial Term Loan, 7/24/22 2,808,534 $2,809,851
CalAtlantic Group, Inc., 5.375%, 10/1/22 2,540,000 $2,628,085
CalAtlantic Group, Inc., 6.25%, 12/15/21 6,975,000 $7,645,375
Calumet Specialty Products Partners LP, 6.5%, 4/15/21 6,525,000 $4,521,100
Capital One Financial Corp. 24,013 $1,738,301
Capital One Financial Corp., Floating Rate Note (Perpetual) 3,875,000 $3,956,859
Cardtronics, Inc., 1.0%, 12/1/20 6,345,000 $6,371,437
Carriage Services, Inc., 2.75%, 3/15/21 2,195,000 $2,633,482
Carrizo Oil & Gas, Inc., 7.5%, 9/15/20 3,020,000 $3,064,042
CCO Holdings LLC, 6.5%, 4/30/21 9,250,000 $9,874,195
Cengage Learning Holdings II, Inc. 13,966 $268,846
Centene Corp., 5.625%, 2/15/21 (144A) 2,000,000 $2,130,000
Centene Corp., 6.125%, 2/15/24 (144A) 1,325,000 $1,415,910
CenturyLink, Inc., 5.8%, 3/15/22 3,625,000 $3,606,553
CenturyLink, Inc., 6.45%, 6/15/21 3,300,000 $3,446,410
CenturyLink, Inc., 7.5%, 4/1/24 300,000 $302,313
Cepheid, 1.25%, 2/1/21 4,430,000 $3,812,569
CEVA GROUP Plc 2,282 $798,721
CEVA GROUP Plc, 0.0%, 12/31/14 4,940 $1,729,018
CFCRE 2015-RUM Mortgage Trust, Floating Rate Note, 7/15/30 (144A) 1,475,000 $1,440,889
C Flt% 31dec49 Perpetual 3,225,000 $3,321,078
Charter Communications Operating L 1st Lien Tl L + 0% 26may16 1,783,877 $1,783,877
Charter Communications Operating L 1st Lien Tl L + 0% 26may16 290,399 $290,399
Chesapeake Energy Corp., 8.0%, 12/15/22 (144A) 3,756,000 $2,660,917
CHS, 6.875%, 2/1/22 850,000 $783,859
CHS, 8.0%, 11/15/19 8,900,000 $9,283,936
Cigna Corp. 16,643 $2,305,721
Cimpress NV, 7.0%, 4/1/22 (144A) 3,225,000 $3,276,063
Cincinnati Bell, Inc., 8.375%, 10/15/20 8,553,000 $8,798,661
Cinedigm Digital Funding 1 LLC, Term Loan, 2/28/18 427,699 $424,491
Citigroup, Inc., Floating Rate Note (Perpetual) 5,755,000 $5,812,294
Citigroup Commercial Mortgage Trust 2014-GC23 REMICS, Floating Rate Note, 7/12/47 (144A) 2,500,000 $1,474,465
Citrix Systems, Inc., 0.5%, 4/15/19 2,335,000 $2,637,610
Cliffs Natural Resources, Inc., 8.25%, 3/31/20 (144A) 0 $4,606
Cme: (Cdx.Na.Hy.23.V4) Usd 20dec19 Z91mw60e6 27,629,015 $1,902,214
Cme: (Cdx.Na.Hy.25.V1) Usd 20dec20 Z91vrer63 6,040,000 $201,113
COBALT CMBS Commercial Mortgage Trust 2007-C3, Floating Rate Note, 5/15/46 2,750,000 $2,598,016
COBALT CMBS Commercial Mortgage Trust 2007-C3, Floating Rate Note, 5/15/46 1,200,000 $1,078,008
Cobalt International Energy, Inc., 2.625%, 12/1/19 6,440,000 $3,310,563
COMM 2014-KYO Mortgage Trust, Floating Rate Note, 6/11/27 (144A) 2,650,000 $2,629,778
Commercial Vehicle Group, Inc. 482,433 $1,239,853
CommScope Technologies Finance LLC, 6.0%, 6/15/25 (144A) 1,890,000 $1,980,090
Communications Sales & Leasing, Inc. 117,160 $2,721,627
Comstock Resources, Inc., 9.5%, 6/15/20 488,000 $85,834
Concentra, Inc., Initial Term Loan (Second Lien), 4/8/23 3,430,000 $3,362,429
Concho Resources, Inc., 5.5%, 4/1/23 3,675,000 $3,719,406
Constellation Brands, Inc., 3.75%, 5/1/21 3,900,000 $4,119,375
Constellis Holdings LLC, 9.75%, 5/15/20 (144A) 3,475,000 $3,301,105
Continental Resources, Inc., 3.8%, 6/1/24 2,055,000 $1,784,425
ContourGlobal Power Holdings SA, 7.125%, 6/1/19 (144A) 3,415,000 $3,482,233
Credit Agricole SA, Floating Rate Note (Perpetual) (144A) 5,680,000 $5,913,314
Crestwood Midstream Partners LP, 6.125%, 3/1/22 4,810,000 $4,438,227
Crestwood Midstream Partners LP, 6.25%, 4/1/23 (144A) 2,200,000 $2,018,958
Crown Cork & Seal Co, Inc., 7.375%, 12/15/26 13,120,000 $14,797,538
CSMC Trust 2015-SAND, Floating Rate Note, 8/15/30 (144A) 3,000,000 $2,790,251
CWGS Group LLC, Term Loan, 2/20/20 6,565,438 $6,557,231
DCP Midstream Operating LP, 2.7%, 4/1/19 1,065,000 $1,001,477
DCP Midstream Operating LP, 3.875%, 3/15/23 1,785,000 $1,584,101
DCP Midstream Operating LP, 5.6%, 4/1/44 2,375,000 $1,922,958
Denbury Resources, Inc., 5.5%, 5/1/22 4,545,000 $3,045,150
DigitalGlobe, Inc., 5.25%, 2/1/21 (144A) 3,880,000 $3,557,475
Dole Food Co, Inc., 7.25%, 5/1/19 (144A) 1,710,000 $1,780,538
DPx Holdings BV, 7.5%, 2/1/22 (144A) 5,610,000 $5,785,313
DR Horton, Inc., 5.75%, 8/15/23 4,345,000 $4,810,518
Dycom Industries, Inc., 0.75%, 9/15/21 (144A) 3,830,000 $3,938,995
Eden Re II, Ltd., 0.0%, 4/23/19 (Cat Bond) (144A) 1,100,000 $1,118,480
EMC Corp./MA 103,800 $2,710,218
Emergent BioSolutions, Inc., 2.875%, 1/15/21 4,365,000 $5,997,904
Endo Finance LLC, 5.75%, 1/15/22 (144A) 4,160,000 $4,147,231
Endologix, Inc., 2.25%, 12/15/18 2,015,000 $1,773,956
Endologix, Inc., 3.25%, 11/1/20 1,390,000 $1,654,843
Enlk 5.05% 01apr45 685,000 $517,725
Enlk 5.6% 01apr44 1,973,000 $1,511,757
Entegris, Inc., 6.0%, 4/1/22 (144A) 4,250,000 $4,398,750
EPL Oil & Gas, Inc., 8.25%, 2/15/18 5,205,000 $364,350
Equinix, Inc., 5.375%, 4/1/23 2,465,000 $2,591,445
Evergreen Skills Lux Sarl, Initial Term Loan (First Lien), 4/23/21 1,965,000 $1,729,200
Expert Global Solutions, Inc., Term B Advance (First Lien), 4/3/18 4,813,691 $4,729,451
Fannie Mae, 0.5%, 12/15/33 1,300,000 $1,241,518
Ferrellgas LP, 6.5%, 5/1/21 1,850,000 $1,822,250
Ferrellgas LP, 6.75%, 1/15/22 3,585,000 $3,503,889
FireEye, Inc., 1.0%, 6/1/35 (144A) 595,000 $516,782
FireEye, Inc., 1.625%, 6/1/35 (144A) 595,000 $494,904
First Data Corp., 5.0%, 1/15/24 (144A) 2,750,000 $2,837,083
First Data Corp., 5.75%, 1/15/24 (144A) 5,000,000 $5,199,583
First Data Corp., 7.0%, 12/1/23 (144A) 1,830,000 $1,938,326
Florida East Coast Holdings Corp., 6.75%, 5/1/19 (144A) 4,250,000 $4,435,938
Flt% 15jun16 500,000 $505,350
Flt% 31mar19 1,000,000 $1,000,000
Flt% 31mar19 2,600,000 $2,604,160
Fly Leasing, Ltd., 6.375%, 10/15/21 5,825,000 $5,725,004
FMG Resources August 2006 Pty, Ltd., Loan, 6/30/19 388,632 $367,792
Ford Motor Co. 640,791 $8,689,126
Forest City Enterprises LP 378,545 $7,866,165
Frontier Communications Corp., 8.5%, 4/15/20 9,401,000 $9,977,072
Frontier Communications Corp., 8.75%, 4/15/22 3,100,000 $3,073,306
Frontier Communications Corp., 8.875%, 9/15/20 (144A) 530,000 $567,148
General Cable Corp., 4.5%, 11/15/29 (Step) 10,874,000 $7,416,068
Genesis Energy LP, 5.75%, 2/15/21 3,655,000 $3,480,596
Global Mortgage Securitization, Ltd., 5.25%, 11/25/32 (144A) 3,319,000 $442,304
Global Partners LP, 7.0%, 6/15/23 3,220,000 $2,791,948
GMAC Capital Trust I, Floating Rate Note, 2/15/40 358,975 $8,999,503
GMAT 2013-1 Trust, Floating Rate Note, 8/25/53 2,513,900 $2,419,013
Griffon Corp., 5.25%, 3/1/22 2,000,000 $2,027,500
GS Mortgage Securities Corp II Series 2005-GG4, Floating Rate Note, 7/10/39 2,000,000 $1,808,005
Gulfport Energy Corp., 7.75%, 11/1/20 7,615,000 $7,986,231
Halcon Resources Corp., 12.0%, 2/15/22 (144A) 2,185,000 $1,612,166
Halcon Resources Corp., 5.75% (Perpetual) 715 $28,600
HCA, Inc., 5.375%, 2/1/25 13,850,000 $14,347,734
Hexion, Inc., 6.625%, 4/15/20 1,220,000 $1,025,342
Hexion, Inc., 8.875%, 2/1/18 1,567,000 $1,249,193
Hexion, Inc., 9.0%, 11/15/20 2,445,000 $1,213,943
Hilcorp Energy I LP, 5.75%, 10/1/25 (144A) 2,943,000 $2,787,879
Homeowner Assistance Program Reverse Mortgage Loan Trust 2013-RM1, 4.0%, 5/26/53 (144A) 1,400,000 $715,378
IAMGOLD Corp., 6.75%, 10/1/20 (144A) 5,580,000 $4,534,448
Iap Worldwide Services Inc 53 $71,570
Iap Worldwide Services Inc 1st Lien Tl L + 6.5% 18jul19 416,698 $414,094
Immunomedics, Inc., 4.75%, 2/15/20 1,420,000 $1,232,777
Impax Laboratories, Inc., 2.0%, 6/15/22 (144A) 3,725,000 $3,476,098
Innoviva, Inc., 2.125%, 1/15/23 7,215,000 $5,956,934
Insulet Corp., 2.0%, 6/15/19 3,985,000 $3,962,806
International Automotive Components Group SA, 9.125%, 6/1/18 (144A) 909,000 $850,388
Intrepid Aviation Group Holdings LLC, 6.875%, 2/15/19 (144A) 2,950,000 $2,727,316
Iron Mountain, Inc., 5.75%, 8/15/24 1,410,000 $1,465,891
Ironwood Pharmaceuticals, Inc., 2.25%, 6/15/22 (144A) 4,270,000 $3,908,651
J2 Cloud Services, Inc., 8.0%, 8/1/20 6,085,000 $6,472,919
Jack Cooper Holdings Corp., 9.25%, 6/1/20 (144A) 3,147,000 $2,117,013
Jazz Investments I, Ltd., 1.875%, 8/15/21 3,570,000 $3,985,756
JB Poindexter & Co, Inc., 9.0%, 4/1/22 (144A) 4,030,000 $4,271,800
JMC Steel Group, Inc., 8.25%, 3/15/18 (144A) 2,855,000 $2,770,896
Jonah Energy LLC, Initial Loan (Second Lien), 5/8/21 3,863,910 $2,675,758
JPMBB Commercial Mortgage Securities Trust 2014-C25 REMICS, Floating Rate Note, 11/18/47 (144A) 3,000,000 $2,250,904
JPMorgan Chase & Co. 29,608 $1,871,226
JP Morgan Chase Commercial Mortgage Securities Trust 2013-C13 REMICS, Floating Rate Note, 1/18/46 (1 1,350,000 $1,192,525
JP Morgan Chase Commercial Mortgage Securities Trust 2014-INN, Floating Rate Note, 6/15/29 (144A) 4,270,000 $4,140,991
Kane Sac Zero% 15jun16 1,200,000 $1,199,880
Kane Zero% 30jun16 4,500,000 $91,800
Kane Zero% 30jun16 1,000,000 $30,000
Kane Zero% 30jun16 3,000,000 $59,100
KB Home, 1.375%, 2/1/19 6,160,000 $5,930,925
KB Home, 7.0%, 12/15/21 8,375,000 $8,763,972
Kennedy-Wilson, Inc., 5.875%, 4/1/24 1,480,000 $1,453,946
Kilimanjaro Re, Ltd., Floating Rate Note, 11/25/19 (Cat Bond) (144A) 500,000 $500,363
Kilimanjaro Re, Ltd., Floating Rate Note, 12/6/19 (Cat Bond) (144A) 1,250,000 $1,272,297
Kilimanjaro Re, Ltd., Floating Rate Note, 12/6/19 (Cat Bond) (144A) 1,000,000 $1,009,463
Kindred Healthcare, Inc., 6.375%, 4/15/22 7,975,000 $7,319,721
Kindred Healthcare, Inc., 7.5%, 12/1/17 1,725 $1,302,496
Kinetic Concepts, Inc., Dollar Term E-1 Loan, 5/4/18 2,361,623 $2,363,689
Lantheus Medical Imaging, Inc., Initial Term Loan, 6/25/22 5,113,702 $4,576,763
Legacy Reserves LP, 6.625%, 12/1/21 4,975,000 $1,760,424
Lennar Corp., 4.5%, 6/15/19 4,150,000 $4,363,206
Lennar Corp., 4.75%, 11/15/22 7,930,000 $8,222,639
Level 3 Financing, Inc., Tranche B-II 2022 Term Loan, 5/31/22 5,000,000 $5,015,105
Liberty Media Corp., 1.375%, 10/15/23 3,425,000 $3,444,218
Liberty Tire Recycling Llc 73,714 $737
Liberty Tire Recycling LLC, 11.0%, 3/31/21 (144A) (PIK) 1,635,521 $1,248,266
LORENZO RE, Ltd., 0.0%, 12/31/49 (Cat Bond) (Perpetual) 33,500 $83,750
LyondellBasell Industries NV 51,171 $4,230,307
Marathon Petroleum Corp. 39,932 $1,560,543
Mashantucket Western Pequot Tribe, 6.5%, 7/1/36 (PIK) 472,340 $19,873
MDC Partners, Inc., 6.5%, 5/1/24 (144A) 1,605,000 $1,673,150
Memorial Resource Development Corp., 5.875%, 7/1/22 3,610,000 $3,356,245
Mentor Graphics Corp., 4.0%, 4/1/31 5,130,000 $5,406,806
Meritage Homes Corp., 7.0%, 4/1/22 3,660,000 $3,946,700
Micron Technology, Inc., 5.25%, 8/1/23 (144A) 2,355,000 $1,933,773
Micron Technology, Inc., 5.875%, 2/15/22 2,350,000 $2,103,022
Midstates Petroleum Co, Inc., 9.25%, 6/1/21 2,190,000 $117,256
MMM Holdings, Inc., MMM Term Loan, 12/12/17 697,395 $455,050
Molina Healthcare, Inc. 1,900,000 $2,647,294
Monitronics International, Inc., Term B Loan (2013), 3/23/18 2,673,469 $2,566,531
Morgan Stanley, Floating Rate Note (Perpetual) 4,325,000 $4,352,428
MSO of Puerto Rico, Inc., MSO Term Loan, 12/12/17 507,002 $330,819
Mylan NV 47,724 $1,990,568
NANA Development Corp., 9.5%, 3/15/19 (144A) 1,800,000 $1,574,350
National Mentor Holdings, Inc., Tranche B Term Loan, 1/31/21 2,538,200 $2,535,822
National Surgical Hospitals, Inc., Term Loan (First Lien), 5/15/22 1,345,389 $1,326,016
Nationstar Mortgage LLC, 6.5%, 6/1/22 1,310,000 $1,158,804
Nationstar Mortgage LLC, 6.5%, 7/1/21 10,220,000 $9,189,483
Nationstar Mortgage LLC, 6.5%, 8/1/18 1,820,000 $1,804,075
NCL Corp, Ltd., 4.625%, 11/15/20 (144A) 1,480,000 $1,536,564
NCL Corp, Ltd., 5.25%, 11/15/19 (144A) 2,750,000 $2,892,198
NCR Corp. 171,011 $4,974,710
Neptune Finco Corp., 6.625%, 10/15/25 (144A) 1,670,000 $1,857,330
NeuStar, Inc., 4.5%, 1/15/23 3,688,000 $3,073,026
Newell Rubbermaid, Inc. 4,857 $221,188
Northern Oil and Gas, Inc., 8.0%, 6/1/20 2,240,000 $1,788,267
NRG Energy, Inc., 6.25%, 5/1/24 2,850,000 $2,867,813
NRG Energy, Inc., 7.875%, 5/15/21 2,815,000 $3,028,694
Nuance Communications, Inc., 1.0%, 12/15/35 (144A) 1,700,000 $1,543,175
Numericable-SFR SA, 6.0%, 5/15/22 (144A) 1,575,000 $1,596,998
NuVasive, Inc., 2.25%, 3/15/21 (144A) 3,620,000 $4,085,063
Oasis Petroleum, Inc., 6.875%, 3/15/22 6,455,000 $5,817,793
ONEOK, Inc., 7.5%, 9/1/23 3,800,000 $3,895,000
ON Semiconductor Corp., 1.0%, 12/1/20 (144A) 4,480,000 $4,081,467
On Semiconductor Corporation 1st Lien Tl-B L + 4.5% 31mar23 4,450,000 $4,479,481
Orbital ATK, Inc. 12,090 $1,051,830
Outerwall, Inc., 5.875%, 6/15/21 4,010,000 $3,317,050
Oxford Finance LLC, 7.25%, 1/15/18 (144A) 3,100,000 $3,150,676
Pangaea Zero% 01jul18 5,120,000 $92,160
PDC Energy, Inc., 7.75%, 10/15/22 4,860,000 $5,046,840
PDL BioPharma, Inc., 4.0%, 2/1/18 4,538,000 $4,268,556
PFP 2015-2, Ltd., Floating Rate Note, 7/14/34 (144A) 2,171,000 $2,139,825
Pilgrim's Pride Corp., 5.75%, 3/15/25 (144A) 2,425,000 $2,485,255
Post Holdings, Inc., 6.0%, 12/15/22 (144A) 7,600,000 $7,976,517
Post Holdings, Inc., 6.75%, 12/1/21 (144A) 1,775,000 $1,910,353
Post Holdings, Inc., 8.0%, 7/15/25 (144A) 1,940,000 $2,196,673
Prince Mineral Holding Corp., 11.5%, 12/15/19 (144A) 1,345,000 $1,231,945
Provident Funding Associates LP, 6.75%, 6/15/21 (144A) 2,920,000 $2,841,160
QEP Resources, Inc., 5.375%, 10/1/22 2,688,000 $2,558,920
Quidel Corp., 3.25%, 12/15/20 935,000 $860,577
Rain CII Carbon LLC, 8.0%, 12/1/18 (144A) 1,750,000 $1,563,333
Range Resources Corp., 5.75%, 6/1/21 2,890,000 $2,858,090
Regal Entertainment Group, 5.75%, 2/1/25 2,895,000 $2,972,803
Regal Entertainment Group, 5.75%, 3/15/22 425,000 $445,654
Regional Care Hospital Partners In 1st Lien Bridge L + 0% 13apr17 4,060,000 $4,067,613
Rent-A-Center, Inc., 6.625%, 11/15/20 1,340,000 $1,229,725
Resilience Re, Ltd., Floating Rate Note, 1/9/17 (Cat Bond) 1,200,000 $1,204,300
Resolute Forest Products, Inc., 5.875%, 5/15/23 2,845,000 $2,217,934
Revlon Consumer Products Corp., 5.75%, 2/15/21 1,245,000 $1,280,344
Rexel SA, 5.25%, 6/15/20 (144A) 5,200,000 $5,472,133
Reynolds Group Issuer, Inc., 8.5%, 5/15/18 7,495,000 $7,797,756
Reynolds Group Issuer, Inc., 9.875%, 8/15/19 2,565,000 $2,705,042
Rgcare 8.25% 01may23 144a 1,795,000 $1,867,623
Rialto Holdings LLC, 7.0%, 12/1/18 (144A) 1,500,000 $1,513,750
Rice Energy, Inc., 6.25%, 5/1/22 1,200,000 $1,225,500
Rice Energy, Inc., 7.25%, 5/1/23 1,475,000 $1,543,219
Rowan Companies, Inc., 4.875%, 6/1/22 780,000 $650,492
Rowan Companies, Inc., 5.4%, 12/1/42 3,604,000 $2,441,710
Rowan Companies, Inc., 5.85%, 1/15/44 375,000 $262,397
Royal Bank of Scotland Group Plc, Floating Rate Note (Perpetual) 6,000,000 $5,791,955
RTI International Metals, Inc., 1.625%, 10/15/19 1,075,000 $1,231,651
Sabine Pass Liquefaction LLC, 5.625%, 2/1/21 6,775,000 $6,827,930
Sabine Pass Liquefaction LLC, 5.75%, 5/15/24 1,800,000 $1,789,225
Safway Group Holding LLC, 7.0%, 5/15/18 (144A) 2,000,000 $2,064,556
Sanchez Energy Corp., 6.125%, 1/15/23 800,000 $612,428
Sanchez Energy Corp., 7.75%, 6/15/21 2,375,000 $2,022,972
Scientific Games International, Inc., 10.0%, 12/1/22 14,265,000 $12,384,397
Scientific Games International, Inc., 6.25%, 9/1/20 700,000 $457,042
SEACOR Holdings, Inc., 3.0%, 11/15/28 2,170,000 $1,859,600
Sealy Corp., 8.0%, 7/15/16 (PIK) 143,000 $13,048,750
Sector Re V, Ltd., 0.0%, 12/1/19 (Cat Bond) (144A) 8,310 $58,448
Sector Re V, Ltd., 0.0%, 12/1/20 (Cat Bond) (144A) 1,550,000 $1,585,340
Shutterfly, Inc., 0.25%, 5/15/18 4,455,000 $4,446,214
Silverton RE, Ltd., 0.0%, 9/16/16 (Cat Bond) (144A) 2,000,000 $9,200
Silverton RE, Ltd., 0.0%, 9/18/18 (Cat Bond) (144A) 2,700,000 $2,810,430
SolarCity Corp., 1.625%, 11/1/19 3,725,000 $2,453,844
Sotheby's, 5.25%, 10/1/22 (144A) 435,000 $411,891
Southern States Cooperative, Inc., 10.0%, 8/15/21 (144A) 4,460,000 $2,903,956
Springleaf Mortgage Loan Trust 2013-1, Floating Rate Note, 6/25/58 (144A) 400,000 $401,883
Springs Industries, Inc., 6.25%, 6/1/21 2,920,000 $3,047,142
Sprint Corp., 7.25%, 9/15/21 20,345,000 $16,617,061
Starbucks Corp. 58,543 $3,291,873
SunCoke Energy Partners LP, 7.375%, 2/1/20 (144A) 2,250,000 $1,762,734
Swift Energy Co 12,450 $264,563
Synchronoss Technologies, Inc., 0.75%, 8/15/19 2,785,000 $2,712,822
syncreon Group BV, 8.625%, 11/1/21 (144A) 3,500,000 $2,845,938
Talen Energy Supply LLC, 4.625%, 7/15/19 (144A) 7,360,000 $6,945,029
Talen Energy Supply LLC, 6.5%, 6/1/25 3,975,000 $3,635,787
Targa Resources Partners LP, 4.125%, 11/15/19 490,000 $484,620
Targa Resources Partners LP, 4.25%, 11/15/23 2,900,000 $2,730,284
Targa Resources Partners LP, 5.25%, 5/1/23 2,491,000 $2,456,749
Taylor Morrison Communities, Inc., 5.875%, 4/15/23 (144A) 3,990,000 $3,990,443
TE Connectivity, Ltd. 54,309 $3,230,299
TEGNA, Inc., 6.375%, 10/15/23 6,170,000 $6,681,082
TerraForm Power Operating LLC, 5.875%, 2/1/23 (144A) 1,650,000 $1,463,859
Tesoro Corp., 5.375%, 10/1/22 4,695,000 $4,727,767
Teva Pharmaceutical Industries, Ltd., 7.0%, 12/15/18 1,000 $901,000
The GEO Group, Inc., 5.875%, 10/15/24 3,695,000 $3,778,548
The KEYW Holding Corp., 2.5%, 7/15/19 1,150,000 $931,340
The Medicines Co., 2.5%, 1/15/22 2,455,000 $3,016,240
Thermo Fisher Scientific, Inc. 36,436 $5,255,893
The Williams Companies, Inc., 5.75%, 6/24/44 8,105,000 $6,486,308
TI Group Automotive Systems LLC, 8.75%, 7/15/23 (144A) 4,135,000 $4,158,834
TI Group Automotive Systems LLC, Initial US Term Loan, 6/25/22 1,930,648 $1,930,648
T-Mobile USA, Inc., 6.0%, 4/15/24 700,000 $735,875
T-Mobile USA, Inc., 6.5%, 1/15/26 860,000 $928,059
T-Mobile USA, Inc., 6.542%, 4/28/20 4,300,000 $4,507,046
T-Mobile USA, Inc., 6.633%, 4/28/21 1,635,000 $1,750,897
T-Mobile USA, Inc., 6.731%, 4/28/22 2,000,000 $2,139,777
TMS International Corp., 7.625%, 10/15/21 (144A) 2,165,000 $1,522,837
TMX Finance LLC, 8.5%, 9/15/18 (144A) 3,265,000 $2,582,162
Tower Automotive Holdings USA LLC, Initial Term Loan (2014), 4/23/20 6,937,050 $6,937,050
Trader Corp., 9.875%, 8/15/18 (144A) 1,675,000 $1,772,732
Tronox Finance LLC, 6.375%, 8/15/20 2,420,000 $2,091,082
Tronox Finance LLC, 7.5%, 3/15/22 (144A) 4,560,000 $3,828,500
Twitter, Inc., 0.25%, 9/15/19 2,335,000 $2,029,277
U.S. Treasury Floating Rate Note, 0.370227673%, 7/31/16 5,000,000 $5,005,219
United Continental Holdings, Inc. 60,954 $2,792,303
United Rentals North America, Inc., 5.75%, 11/15/24 2,000,000 $2,080,528
United States Treasury Floating Rate Note, Floating Rate Note, 1/31/18 5,000,000 $5,017,493
United States Treasury Floating Rate Note, Floating Rate Note, 10/31/16 5,000,000 $5,004,375
Universal Hospital Services, Inc., 7.625%, 8/15/20 1,265,000 $1,201,620
Univision Communications, Inc., Replacement First-Lien Term Loan (C-4), 3/1/20 1,395,287 $1,396,781
Valeant Pharmaceuticals International, Inc., 5.875%, 5/15/23 (144A) 12,195,000 $10,543,678
Vers 2015-A Zero% 31dec17 4,400,000 $64,240
Vertafore, Inc., Term Loan 2013, 10/3/19 668,841 $671,001
Videotron, Ltd., 5.375%, 6/15/24 (144A) 9,050,000 $9,629,703
Viking Cruises, Ltd., 6.25%, 5/15/25 (144A) 1,680,000 $1,392,417
Viking Cruises, Ltd., 8.5%, 10/15/22 (144A) 4,290,000 $4,048,807
Virgin Media Investment Holdings, Ltd., F Facility, 6/30/23 5,100,408 $5,098,016
VOLT XXV LLC, 4.5%, 6/26/45 (Step) (144A) 1,000,000 $940,747
Voya Financial, Inc., Floating Rate Note, 5/15/53 4,200,000 $4,042,722
WCA Waste Corp., Term Loan, 3/23/18 609,600 $609,219
WCP ISSUER LLC, 6.657%, 8/15/20 (144A) 3,350,000 $3,486,977
WebMD Health Corp., 2.5%, 1/31/18 5,995,000 $6,894,666
WellCare Health Plans, Inc., 5.75%, 11/15/20 6,765,000 $7,223,423
Wells Fargo & Co., 7.5% (Perpetual) 5,265 $6,560,190
WESCO Distribution, Inc., 5.375%, 12/15/21 2,695,000 $2,790,148
Whiting Petroleum Corp., 1.25%, 4/1/20 (144A) 5,930,000 $4,483,327
Whiting Petroleum Corp., 6.25%, 4/1/23 2,005,000 $1,679,605
Windstream Holdings, Inc. 87,633 $760,654
Windstream Services LLC, 6.375%, 8/1/23 2,975,000 $2,315,852
Windstream Services LLC, 7.5%, 6/1/22 7,030,000 $5,984,288
Windstream Services LLC, 7.75%, 10/15/20 3,460,000 $3,141,453
WPX Energy, Inc., 7.5%, 8/1/20 1,850,000 $1,796,813
WPX Energy, Inc., 8.25%, 8/1/23 670,000 $643,619
Wright Medical Group, Inc., 2.0%, 2/15/20 4,866,000 $4,646,287
Xerium Technologies, Inc., 8.875%, 6/15/18 945,000 $865,646
Zero% 01feb18 2,450,000 $2,515,415
Zero% 01feb18 1,200,000 $1,220,760
Zero% 30nov19 5,800,000 $6,670,580
Zero% 30nov20 4,000,000 $4,099,600
Zero% 30nov20 4,200,000 $4,255,020
Zero% 30nov20 4,500,000 $4,767,300
Zero% 30nov20 2,400,000 $2,469,120
Zero% 30nov20 3,600,000 $3,672,360
Zero% 31aug16 1,000,000 $1,138,800

The portfolio is actively managed, and current holdings may be different.

For fund descriptions, historical and current performance, standardized returns as of the most recent quarter-end, risk disclosure or a prospectus, please click here.

Please request a free information kit on any Pioneer fund by ordering from this web site or by calling 1-800-225-6292. The kit includes a quarterly fact sheet and a prospectus. You should consider a fund's investment objectives, risks, charges and expenses carefully before investing. The prospectus contains this and other information about each fund and should be read carefully before you invest or send money. To obtain a prospectus directly and for other information on any Pioneer fund please visit our download literature page.