Pioneer High Yield Fund

Top 10 Portfolio Holdings as of 2/27/2015
Default: sorted by market value

Security Name Par / Shares Market Value
14112z Zero% 01feb19 4,500,000 $4,621,950
AAF Holdings LLC, 12.0%, 7/1/19 (144A) (PIK) 3,152,378 $3,086,178
Acgl Zero% 01jul16 1,500,000 $1,510,500
Activision Blizzard, Inc., 6.125%, 9/15/23 (144A) 3,285,000 $3,725,133
Advanced Micro Devices, Inc., 6.75%, 3/1/19 4,205,000 $4,313,016
Advanced Micro Devices, Inc., 7.0%, 7/1/24 3,020,000 $2,781,672
AdvancePierre Foods, Inc., Term Loan (First Lien), 7/10/17 8,497 $8,521
AECOM, 5.75%, 10/15/22 (144A) 1,385,000 $1,482,200
AECOM, 5.875%, 10/15/24 (144A) 1,390,000 $1,509,086
AES Corp. Virginia, 5.5%, 3/15/24 1,650,000 $1,715,840
Aetna, Inc. 75,347 $7,500,794
Affinion Group, Inc., Tranche B Term Loan, 4/30/18 1,983,072 $1,895,073
Aguila 3 SA, 7.875%, 1/31/18 (144A) 1,700,000 $1,732,406
Akamai Technologies, Inc., 0.0%, 2/15/19 (144A) 4,555,000 $4,831,147
Albany Molecular Research, Inc., 2.25%, 11/15/18 2,990,000 $3,633,411
Alere, Inc., 3.0%, 5/15/16 9,460,000 $10,889,248
Alere, Inc., 3.0% (Perpetual) 23,308 $7,642,227
Alliance HealthCare Services, Inc., Initial Term Loan, 6/3/19 1,182,005 $1,177,943
Alliance One International, Inc., 9.875%, 7/15/21 8,460,000 $7,227,337
Alliant Holdings I, Inc., Initial Term Loan, 12/20/19 1,236,483 $1,236,483
Allison Transmission, Inc., Term B-3 Loan, 8/23/19 7,424 $7,445
Ally Financial, Inc., 7.0% (Perpetual) (144A) 6,450 $6,499,383
Alpha Natural Resources, Inc., 3.75%, 12/15/17 4,705,000 $1,741,340
Altice Financing SA, 6.625%, 2/15/23 (144A) 1,840,000 $1,924,027
Altrl Zero% 30jun16 4,064,365 $2,908,053
Altrl Zero% 30jun17 1,680,000 $1,696,296
American Energy - Utica LLC, 3.5%, 3/1/21 (144A) (PIK) 3,365,000 $1,580,569
AMG Capital Trust II, 5.15%, 10/15/37 48,000 $2,979,000
Amsted Industries, Inc., 5.0%, 3/15/22 (144A) 5,795,000 $5,926,387
Antero Resources Finance Corp., 6.0%, 12/1/20 3,360,000 $3,484,320
Apex Tool Group LLC, 7.0%, 2/1/21 (144A) 6,901,000 $6,454,160
Ardagh Finance Holdings SA, 8.625%, 6/15/19 (144A) (PIK) 3,653,453 $3,863,488
Ardagh Packaging Finance Plc, 6.75%, 1/31/21 (144A) 3,350,000 $3,402,344
Ardagh Packaging Finance Plc, 7.0%, 11/15/20 (144A) 4,300,000 $768,330
Ardent Medical Services, Inc., Term Loan (First Lien), 7/2/18 1,950,757 $1,958,376
ARIAD Pharmaceuticals, Inc., 3.625%, 6/15/19 (144A) 1,340,000 $1,508,137
Arlington Flt% 01aug15 1,200,000 $1,324,440
Ascent Capital Group, Inc., 4.0%, 7/15/20 2,710,000 $2,135,217
Audatex North America, Inc., 6.0%, 6/15/21 (144A) 2,350,000 $2,525,467
Aviv Healthcare Properties LP, 7.75%, 2/15/19 2,675,000 $2,794,836
Axalta Coating Systems US Holdings, Inc., Refinanced Term B Loan, 2/1/20 1,493,391 $1,485,406
Axiall Corp. 127,734 $5,915,362
Banc of America Commercial Mortgage Trust 2007-5, Floating Rate Note, 2/10/51 2,000,000 $2,043,375
Bank of America Corp., Floating Rate Note, 9/29/49 4,600,000 $4,870,410
Bankrate, Inc., 6.125%, 8/15/18 (144A) 3,400,000 $3,416,020
Basic Energy Services, Inc., 7.75%, 10/15/22 6,485,000 $4,984,578
Berkeley-Kane Flt% 12jun15 1,004,200 $1,046,577
BioMarin Pharmaceutical, Inc., 0.75%, 10/15/18 1,920,000 $2,556,520
BioMarin Pharmaceutical, Inc., 1.5%, 10/15/20 1,920,000 $2,643,440
Bio-Rad Laboratories, Inc. 46,569 $5,922,645
BioScrip, Inc. 255,259 $1,559,632
BioScrip, Inc., 8.875%, 2/15/21 (144A) 3,675,000 $3,300,903
BioScrip, Inc., Delayed Draw Term Loan, 7/31/20 1,232,125 $1,233,665
BioScrip, Inc., Initial Term B Loan, 7/31/20 2,053,542 $2,056,109
Blue Danube, Ltd., Floating Rate Note, 4/10/15 (Cat Bond) (144A) 250,000 $252,210
Bombardier, Inc., 6.0%, 10/15/22 (144A) 2,250,000 $2,204,250
Bristow Group, Inc., 6.25%, 10/15/22 4,245,000 $4,258,118
Brocade Communications Systems, Inc., 1.375%, 1/1/20 (144A) 2,595,000 $2,758,305
Brookfield Residential Properties, Inc., 6.5%, 12/15/20 (144A) 2,100,000 $2,222,179
Brown Shoe Co, Inc., 7.125%, 5/15/19 2,350,000 $2,491,906
Calfrac Holdings LP, 7.5%, 12/1/20 (144A) 2,080,000 $1,904,500
Calumet Specialty Products Partners LP, 6.5%, 4/15/21 (144A) 6,525,000 $6,583,816
Cambium Learning Group, Inc., 9.75%, 2/15/17 3,695,000 $3,661,822
CAM Mortgage Trust 2014-2, Floating Rate Note, 5/15/48 (144A) 575,000 $578,799
Cardtronics, Inc., 1.0%, 12/1/20 6,345,000 $6,225,502
Carriage Services, Inc., 2.75%, 3/14/21 (144A) 2,195,000 $2,606,456
Carrizo Oil & Gas, Inc., 7.5%, 9/15/20 2,150,000 $2,268,698
Carrizo Oil & Gas, Inc., 8.625%, 10/15/18 10,236,000 $10,971,606
CCO Holdings LLC, 6.5%, 4/30/21 9,250,000 $9,932,701
Cengage Learning Holdings II LP 13,966 $309,878
CenturyLink, Inc., 5.8%, 3/15/22 3,625,000 $3,946,759
CenturyLink, Inc., 6.45%, 6/15/21 3,300,000 $3,664,911
CEVA GROUP Plc 2,282 $1,597,442
CEVA GROUP Plc, 0.0%, 12/31/14 4,940 $3,458,035
Chaparral Energy, Inc., 8.25%, 9/1/21 3,310,000 $2,682,962
Chesapeake Energy Corp., 5.375%, 6/15/21 8,435,000 $8,632,373
CHS, 8.0%, 11/15/19 11,400,000 $12,458,933
Cigna Corp. 56,289 $6,846,431
Cincinnati Bell, Inc., 8.375%, 10/15/20 13,358,000 $14,639,580
Cinedigm Digital Funding I LLC, Term Loan, 2/28/18 970,120 $971,333
Citigroup, Inc., Floating Rate Note (Perpetual) 411,000 $11,273,730
Citigroup, Inc., Floating Rate Note (Perpetual) 2,375,000 $2,388,966
Citrix Systems, Inc., 0.5%, 4/15/19 (144A) 2,470,000 $2,577,994
Cme: (Cdx.Na.Hy.23.V2) Usd 20dec19 Z91mw60e6 28,198,686 $2,406,601
COBALT CMBS Commercial Mortgage Trust 2007-C3, Floating Rate Note, 5/15/46 1,935,000 $1,839,793
COBALT CMBS Commercial Mortgage Trust 2007-C3, Floating Rate Note, 5/15/46 595,000 $529,160
Cobalt International Energy, Inc., 2.625%, 12/1/19 7,895,000 $5,778,893
COMM 2014-KYO Mortgage Trust, Floating Rate Note, 6/11/27 (144A) 2,650,000 $2,643,729
Commercial Vehicle Group, Inc. 482,433 $2,764,341
Comstock Resources, Inc., 9.5%, 6/15/20 3,580,000 $2,288,565
Concho Resources, Inc., 5.5%, 4/1/23 3,675,000 $3,886,159
Concho Resources, Inc., 6.5%, 1/15/22 2,925,000 $3,130,522
Constellation Brands, Inc., 3.75%, 5/1/21 4,100,000 $4,226,844
Corsicanto, Ltd., 3.5%, 1/15/32 2,615,000 $1,965,354
Cphd 1.25% 01feb21 1,905,000 $2,118,717
Crestwood Midstream Partners LP, 6.125%, 3/1/22 4,810,000 $4,978,901
Crown Cork & Seal Co, Inc., 7.375%, 12/15/26 13,120,000 $15,120,208
CWGS Group LLC, Term Loan, 2/20/20 7,015,125 $7,045,816
DAE Aviation Holdings, Inc., Replacement Tranche B-1 Loan, 11/2/18 0 $0
Denbury Resources, Inc., 5.5%, 5/1/22 4,670,000 $4,449,926
DigitalGlobe, Inc., 5.25%, 2/1/21 (144A) 4,350,000 $4,236,628
Dish 5.875% 15nov24 3,080,000 $3,113,859
Dltr 5.75% 01mar23 144a 2,910,000 $3,065,099
DR Horton, Inc., 5.75%, 8/15/23 5,045,000 $5,496,913
Dycom Investments, Inc., 7.125%, 1/15/21 3,000,000 $3,175,531
DynCorp International, Inc., 10.375%, 7/1/17 1,583,000 $1,462,577
Ebs 2.875% 15jan21 6,697,000 $7,954,757
EMC Corp./MA 103,800 $3,003,972
Emulex Corp., 1.75%, 11/15/18 3,295,000 $3,338,187
Endologix, Inc., 2.25%, 12/15/18 3,015,000 $2,983,531
Energy & Exploration Partners, Inc., 8.0%, 7/1/19 (144A) 4,155,000 $1,673,080
Energy Transfer Equity LP, 5.875%, 1/15/24 3,520,000 $3,791,101
Energy XXI, Ltd., 3.0%, 12/15/18 1,000,000 $371,086
Energy XXI Gulf Coast, Inc., 7.5%, 12/15/21 3,865,000 $2,049,255
Entegris, Inc., 6.0%, 4/1/22 (144A) 5,100,000 $5,428,950
EP Energy LLC, 9.375%, 5/1/20 13,000,000 $14,273,594
EPL Oil & Gas, Inc., 8.25%, 2/15/18 5,205,000 $3,750,094
Equinix, Inc., 5.375%, 4/1/23 5,465,000 $5,834,286
Evergreen Skills Lux Sarl, Initial Term Loan (First Lien), 4/23/21 1,990,000 $1,966,120
Exlp 6% 01oct22 5,175,000 $4,861,913
Expert Global Solutions, Inc., Term B Advance (First Lien), 4/3/18 4,813,691 $4,821,215
Exterran Partners LP, 6.0%, 4/1/21 2,750,000 $2,597,375
Ferrellgas LP, 6.5%, 5/1/21 1,850,000 $1,893,706
Ferrellgas LP, 6.75%, 1/15/22 3,585,000 $3,649,754
Fidelity & Guaranty Life Holdings, Inc., 6.375%, 4/1/21 (144A) 5,400,000 $5,824,069
Fieldwood Energy LLC, Closing Date Loan (Second Lien), 9/30/20 5,168,665 $3,987,951
Fifth Third Bancorp, Floating Rate Note (Perpetual) 60,650 $1,681,825
Flextronics International, Ltd., 4.625%, 2/15/20 1,380,000 $1,451,305
Florida East Coast Holdings Corp., 6.75%, 5/1/19 (144A) 4,250,000 $4,476,047
Fly Leasing, Ltd., 6.375%, 10/15/21 5,825,000 $5,916,319
Ford Motor Co. 704,311 $11,508,442
Forest City Enterprises, Inc. 236,175 $5,963,419
Forest City Enterprises, Inc., 3.625%, 8/15/20 4,885,000 $5,672,995
Freeport-McMoRan, Inc. 264,669 $5,724,790
Frontier Communications Corp., 7.125%, 1/15/23 4,750,000 $4,998,237
Frontier Communications Corp., 8.5%, 4/15/20 9,705,000 $11,271,414
Frontier Communications Corp., 8.75%, 4/15/22 3,100,000 $3,624,524
Gannett Co, Inc., 6.375%, 10/15/23 6,170,000 $6,839,766
General Cable Corp. 667,230 $10,035,139
General Cable Corp., 4.5%, 11/15/29 (Step) 10,874,000 $7,704,229
Gentiva Health Services, Inc., 11.5%, 9/1/18 684,000 $764,570
Gibraltar Industries, Inc., 6.25%, 2/1/21 2,750,000 $2,817,891
Global Mortgage Securitization, Ltd., 5.25%, 11/25/32 (144A) 3,319,000 $791,878
GLP Capital LP, 4.375%, 11/1/18 2,075,000 $2,187,504
GLP Capital LP, 4.875%, 11/1/20 3,250,000 $3,447,742
GMAC Capital Trust I, Floating Rate Note, 2/15/40 358,975 $9,344,119
GMAT 2013-1 Trust, Floating Rate Note, 8/25/53 2,513,900 $2,387,194
Gulfport Energy Corp., 7.75%, 11/1/20 5,600,000 $5,909,050
Gulfport Energy Corp., 7.75%, 11/1/20 (144A) 2,015,000 $2,126,203
Halcon Resources Corp. 5,301 $10,178
Halcon Resources Corp., 0.0% (Perpetual) 715 $248,641
Halcon Resources Corp., 8.875%, 5/15/21 7,255,000 $5,698,022
Halcon Resources Corp., 9.25%, 2/15/22 3,225,000 $2,421,460
Hexion US Finance Corp., 8.875%, 2/1/18 2,756,000 $2,340,275
Hexion US Finance Corp., 9.0%, 11/15/20 2,445,000 $1,603,309
Homeowner Assistance Program Reverse Mortgage Loan Trust 2013-RM1, 4.0%, 5/26/53 (144A) 1,400,000 $955,184
Horizon Lines, Inc. 4,099,666 $2,705,780
IAMGOLD Corp., 6.75%, 10/1/20 (144A) 6,445,000 $5,784,790
Iap Worldwide Services Inc 53 $39,761
Iap Worldwide Services Inc 1st Lien Tl L + 6.5% 18jul19 421,999 $381,909
Immu 4.75% 15feb20 144a 1,420,000 $1,451,727
Insulet Corp., 2.0%, 6/15/19 5,985,000 $5,965,641
International Equipment Solutions LLC, Initial Loan, 8/16/19 2,838,884 $2,845,981
Intrepid Aviation Group Holdings LLC, 6.875%, 2/15/19 (144A) 2,950,000 $2,721,324
j2 Global, Inc., 8.0%, 8/1/20 6,085,000 $6,608,310
Jack Cooper Holdings Corp., 9.25%, 6/1/20 (144A) 1,990,000 $2,094,185
James River Coal Co., 7.875%, 4/1/19 4,170,000 $472,904
Jarden Corp., 1.125%, 3/15/34 (144A) 5,470,000 $6,643,144
Jazz Investments I, Ltd., 1.875%, 8/15/21 (144A) 2,050,000 $2,379,388
JB Poindexter & Co, Inc., 9.0%, 4/1/22 (144A) 4,030,000 $4,540,803
JLL, 7.5%, 2/1/22 (144A) 5,610,000 $5,795,831
JMC Steel Group, Inc., 8.25%, 3/15/18 (144A) 2,855,000 $2,597,634
Jonah Energy Llc 2nd Lien Tl L + 6.5% 08may21 3,863,910 $3,438,880
Joy Global, Inc. 109,200 $4,839,744
JP Morgan Chase Commercial Mortgage Securities Trust 2014-INN, Floating Rate Note, 6/15/29 (144A) 4,270,000 $4,271,872
Kane Flt% 12jun15 3,040,000 $2,943,024
Kane Flt% 14jul15 1,018,720 $997,938
Kane Ilw Zero% 02feb16 1,500,000 $1,391,100
Kane Sac, Ltd., 0.0%, 1/7/16 (Cat Bond) 1,467,400 $1,469,601
Kane Sac, Ltd., 0.0%, 1/7/16 (Cat Bond) 1,261,500 $1,264,275
Kane Sac, Ltd., 0.0%, 1/7/16 (Cat Bond) 3,014,550 $3,022,086
Kane Sac, Ltd., 0.0%, 1/7/16 (Cat Bond) 1,514,150 $1,515,816
Kane Zero% 15jan16 506,000 $507,467
Kane Zero% 19feb16 3,600,000 $3,709,080
Kane Zero% 22jan16 1,000,000 $1,013,200
Kane Zero% 22jan16 3,000,000 $3,027,600
Kane Zero% 29apr16 6,200,000 $6,349,420
KB Home, 1.375%, 2/1/19 11,400,000 $10,749,131
KB Home, 7.0%, 12/15/21 8,375,000 $8,535,753
KeHE Distributors LLC, 7.625%, 8/15/21 (144A) 3,635,000 $3,890,371
Kennametal, Inc. 139,920 $4,897,200
Kennedy-Wilson, Inc., 5.875%, 4/1/24 1,480,000 $1,530,305
Key Energy Services, Inc., 6.75%, 3/1/21 1,545,000 $1,083,528
Kilimanjaro Re, Ltd., Floating Rate Note, 11/25/19 (Cat Bond) (144A) 1,000,000 $1,002,938
Kinetic Concepts, Inc., Dollar Term E-1 Loan, 5/4/18 2,391,823 $2,392,196
Kodiak Oil & Gas Corp., 5.5%, 1/15/21 1,400,000 $1,423,197
Kodiak Oil & Gas Corp., 5.5%, 2/1/22 3,000,000 $3,042,375
Kodiak Oil & Gas Corp., 8.125%, 12/1/19 5,200,000 $5,523,104
Lantheus Medical Imaging, Inc., 9.75%, 5/15/17 7,459,000 $7,499,248
Legacy Reserves LP, 6.625%, 12/1/21 7,200,000 $5,911,275
Lennar Corp., 2.75%, 12/15/20 (144A) 3,015,000 $6,825,060
Lennar Corp., 4.5%, 6/15/19 4,150,000 $4,312,369
Lennar Corp., 4.75%, 11/15/22 8,730,000 $9,023,243
Level 3 Financing Inc 1st Lien Tl-B5 L + 3.5% 31jan22 5,000,000 $5,030,210
Liberty Media Corp., 1.375%, 10/15/23 4,425,000 $4,441,947
Liberty Tire Recycling LLC, 11.0%, 10/1/16 (144A) 2,400,000 $2,027,800
Lightstream Resources, Ltd., 8.625%, 2/1/20 (144A) 3,075,000 $2,164,704
Linn Energy LLC, 6.25%, 11/1/19 12,635,000 $11,027,986
Live Nation Entertainment, Inc., 7.0%, 9/1/20 (144A) 2,350,000 $2,601,254
LORENZO RE, Ltd., 0.0%, 12/31/49 (Cat Bond) (Perpetual) 33,500 $3,982,480
LyondellBasell Industries NV 77,355 $6,645,568
Marathon Oil Corp. 147,800 $4,117,708
Marathon Petroleum Corp. 56,836 $5,967,780
Mashantucket Western Pequot Tribe, 6.5%, 7/1/36 (PIK) 429,211 $13,771
MDC Partners, Inc., 6.75%, 4/1/20 (144A) 5,360,000 $5,789,135
MedAssets, Inc., 8.0%, 11/15/18 1,400,000 $1,493,294
Memorial Production Partners LP, 7.625%, 5/1/21 4,480,000 $4,400,620
Mentor Graphics Corp., 4.0%, 4/1/31 5,815,000 $7,218,353
Meritage Homes Corp., 7.0%, 4/1/22 3,660,000 $4,002,515
Micron Technology, Inc., 5.25%, 8/1/23 (144A) 2,680,000 $2,753,421
Midstates Petroleum Co, Inc., 10.75%, 10/1/20 4,155,000 $2,820,812
Midstates Petroleum Co, Inc., 9.25%, 6/1/21 2,800,000 $1,819,592
MMM Holdings, Inc., MMM Term Loan, 12/12/17 768,218 $769,178
Monitronics International, Inc., 9.125%, 4/1/20 2,400,000 $2,444,425
Monitronics International, Inc., Term B Loan (2013), 3/23/18 5,947,674 $5,963,471
Morgan Stanley, Floating Rate Note (Perpetual) 189,000 $5,324,130
MPL 2 Acquisition Canco, Inc., 9.875%, 8/15/18 (144A) 1,675,000 $1,802,411
MSO of Puerto Rico, Inc., MSO Term Loan, 12/12/17 558,503 $552,918
Mu 5.5% 01feb25 144a 1,535,000 $1,579,707
Mu 5.875% 15feb22 1,825,000 $1,924,684
Mystic Re, Ltd., Floating Rate Note, 3/12/15 (Cat Bond) (144A) 2,400,000 $2,448,960
NANA Development Corp., 9.5%, 3/15/19 (144A) 1,800,000 $1,733,425
National Mentor Holdings, Inc., Tranche B Term Loan, 1/31/21 2,570,575 $2,554,830
National Surgical Hospitals, Inc., Tranche B-2 Term Loan, 7/11/19 1,505,995 $1,498,465
Nationstar Mortgage LLC, 6.5%, 6/1/22 1,515,000 $1,463,048
Nationstar Mortgage LLC, 6.5%, 7/1/21 10,350,000 $10,068,394
Nationstar Mortgage LLC, 6.5%, 8/1/18 1,820,000 $1,821,957
Navistar International Corp., 8.25%, 11/1/21 4,850,000 $5,004,291
NCL Corp, Ltd., 5.25%, 11/15/19 (144A) 2,750,000 $2,865,328
NCR Corp. 171,011 $5,029,434
NeuStar, Inc., 4.5%, 1/15/23 5,048,000 $4,469,373
Northern Oil and Gas, Inc., 8.0%, 6/1/20 1,430,000 $1,343,247
Nrg 6.25% 01may24 1,450,000 $1,508,453
NRG Energy, Inc., 7.625%, 1/15/18 4,700,000 $5,259,806
Nuance Communications, Inc., 2.75%, 11/1/31 10,992,000 $10,952,841
Numericable-SFR, 6.0%, 5/15/22 (144A) 1,575,000 $1,605,975
NuStar Logistics LP, Floating Rate Note, 1/15/43 96,506 $2,537,143
Oasis Petroleum, Inc., 6.5%, 11/1/21 2,820,000 $2,765,010
Offshore Group Investment, Ltd., 7.5%, 11/1/19 1,690,000 $1,122,794
Offshore Group Investment, Ltd., Second Term Loan, 3/28/19 2,308,875 $1,431,503
ON Semiconductor Corp., 2.625%, 12/15/26 4,239,000 $5,657,784
Orbital Atk Inc 46,823 $3,103,428
Outerwall, Inc., 5.875%, 6/15/21 (144A) 4,010,000 $3,736,972
Oxford Finance LLC, 7.25%, 1/15/18 (144A) 3,100,000 $3,219,845
Pangaea Zero% 01jul18 5,120,000 $5,534,720
Parker Drilling Co., 7.5%, 8/1/20 2,995,000 $2,592,547
PC Nextco Holdings LLC, 8.75%, 8/15/19 2,805,000 $2,869,963
PDC Energy, Inc., 7.75%, 10/15/22 4,960,000 $5,300,414
PDL BioPharma, Inc., 4.0%, 2/1/18 4,538,000 $4,273,662
Penn Virginia Corp., 6.0% (Perpetual) (144A) 20,400 $1,212,525
Penn Virginia Corp., 7.25%, 4/15/19 2,860,000 $2,804,329
Penn Virginia Corp., 8.5%, 5/1/20 7,480,000 $7,537,035
Petm 7.125% 15mar23 144a 2,710,000 $2,804,850
PetroQuest Energy, Inc., 6.875% (Perpetual) 59,180 $1,804,990
Petsmart Inc 1st Lien Bridge L + 7% 13dec15 7,130,000 $7,130,000
Pinnacle Entertainment, Inc. 95,923 $2,469,058
Pittsburgh Glass Works LLC, 8.0%, 11/15/18 (144A) 1,440,000 $1,564,760
Polymet Mining Corp. 663,136 $722,818
Post Holdings, Inc., 2.5% (Perpetual) (144A) 73,300 $7,128,425
Post Holdings, Inc., 6.0%, 12/15/22 (144A) 2,300,000 $2,290,608
Post Holdings, Inc., 6.75%, 12/1/21 (144A) 1,775,000 $1,843,892
PPL Capital Funding, Inc., 5.9%, 4/30/73 214,000 $5,427,040
Prince Mineral Holding Corp., 12.0%, 12/15/19 (144A) 1,595,000 $1,635,429
Quebecor Media, Inc., 5.75%, 1/15/23 5,975,000 $6,313,542
Queen Street IV Capital, Ltd., Floating Rate Note, 4/9/15 (Cat Bond) (144A) 2,000,000 $2,035,133
Queen Street VI Re, Ltd., Floating Rate Note, 4/9/15 (Cat Bond) (144A) 250,000 $256,438
Queen Street V Re, Ltd., Floating Rate Note, 4/9/15 (Cat Bond) (144A) 1,150,000 $1,173,524
Rain CII Carbon LLC, 8.0%, 12/1/18 (144A) 1,750,000 $1,722,583
Regal Entertainment Group, 5.75%, 2/1/25 4,895,000 $4,916,110
Regal Entertainment Group, 5.75%, 3/15/22 425,000 $447,752
Rent-A-Center, Inc., 6.625%, 11/15/20 2,590,000 $2,496,643
Residential Reinsurance 2011, Ltd., Floating Rate Note, 12/6/16 (Cat Bond) (144A) 800,000 $827,784
Residential Reinsurance 2012, Ltd., Floating Rate Note, 6/6/16 (Cat Bond) (144A) 1,750,000 $2,071,319
Residential Reinsurance 2013, Ltd., Floating Rate Note, 12/6/19 (Cat Bond) (144A) 250,000 $267,642
Resolute Forest Products, Inc., 5.875%, 5/15/23 3,845,000 $3,775,056
Revlon Consumer Products Corp., 5.75%, 2/15/21 2,495,000 $2,562,556
Rexel SA, 5.25%, 6/15/20 (144A) 5,200,000 $5,424,358
Reynolds Group Issuer, Inc., 8.25%, 2/15/21 3,700,000 $3,905,273
Reynolds Group Issuer, Inc., 8.5%, 5/15/18 7,495,000 $7,911,493
Reynolds Group Issuer, Inc., 9.875%, 8/15/19 4,565,000 $4,906,535
Rialto Holdings LLC, 7.0%, 12/1/18 (144A) 1,800,000 $1,866,450
Rite Aid Corporation 1st Lien Bridge L + 6% 10feb16 7,530,000 $7,530,000
RJS Power Holdings LLC, 5.125%, 7/15/19 (144A) 5,625,000 $5,575,059
Rosetta Resources, Inc., 5.875%, 6/1/22 8,170,000 $7,959,197
RTI International Metals, Inc., 1.625%, 10/15/19 3,805,000 $3,773,146
Sabine Pass Liquefaction LLC, 5.625%, 2/1/21 6,775,000 $6,964,488
Safway Group Holding LLC, 7.0%, 5/15/18 (144A) 2,000,000 $2,060,056
Salix Pharmaceuticals, Ltd., 1.5%, 3/15/19 3,720,000 $9,006,740
Sanchez Energy Corp., 6.125%, 1/15/23 (144A) 1,300,000 $1,202,261
Sanchez Energy Corp., 7.75%, 6/15/21 3,775,000 $3,824,888
SandRidge Energy, Inc., 7.0% (Perpetual) 33,162 $1,517,162
Scientific Games International, Inc., 10.0%, 12/1/22 (144A) 12,050,000 $12,133,681
Scientific Games International, Inc., 6.25%, 9/1/20 700,000 $560,510
SEACOR Holdings, Inc., 3.0%, 11/15/28 2,170,000 $1,948,509
Seagate HDD Cayman, 4.75%, 1/1/25 (144A) 5,900,000 $6,289,983
Seagate HDD Cayman, 4.75%, 6/1/23 4,300,000 $4,629,058
Sealy Corp., 8.0%, 7/15/16 (PIK) 143,000 $12,143,560
Sector Re V, Ltd., 0.0%, 12/1/18 (Cat Bond) (144A) 12,321 $147,316
Sector Re V, Ltd., 0.0%, 12/1/19 (Cat Bond) (144A) 1,100,000 $1,120,020
Sector Re V, Ltd., 0.0%, 3/1/18 (Cat Bond) (144A) 3,587 $60,777
Sector Re V, Ltd., 0.0%, 3/30/19 (Cat Bond) (144A) 1,250,000 $1,541,875
ServiceNow, Inc., 0.0%, 11/1/18 2,235,000 $2,691,778
Ship Midco, Ltd., Facility B2A-II, 11/29/19 1,965,497 $1,971,230
Shutterfly, Inc., 0.25%, 5/15/18 7,455,000 $7,474,311
Silverton RE, Ltd., 0.0%, 9/16/16 (Cat Bond) (144A) 2,000,000 $275,400
Silverton RE, Ltd., 0.0%, 9/18/17 (Cat Bond) (144A) 2,000,000 $2,066,600
SolarCity Corp., 1.625%, 11/1/19 (144A) 4,825,000 $4,266,171
Southern States Cooperative, Inc., 10.0%, 8/15/21 (144A) 4,460,000 $4,208,506
Springleaf Mortgage Loan Trust 2013-1, Floating Rate Note, 6/25/58 (144A) 400,000 $414,544
Sprint Corp., 7.25%, 9/15/21 14,235,000 $14,978,087
Standard Aero, Ltd., Replacement Tranche B-2 Loan, 11/2/18 0 $0
Standard Pacific Corp., 6.25%, 12/15/21 6,975,000 $7,412,148
Starbucks Corp. 54,390 $5,084,649
Stone Energy Corp., 7.5%, 11/15/22 1,945,000 $1,889,486
SunCoke Energy Partners LP, 7.375%, 2/1/20 (144A) 2,250,000 $2,352,445
Swift Energy Co., 7.875%, 3/1/22 10,270,000 $5,429,942
syncreon Group BV, 8.625%, 11/1/21 (144A) 3,500,000 $3,195,609
Talos Production LLC, 9.75%, 2/15/18 (144A) 3,000,000 $2,605,563
Targa Resources Partners LP, 4.25%, 11/15/23 4,685,000 $4,695,118
TE Connectivity, Ltd. 54,309 $3,917,308
Tesoro Corp., 5.375%, 10/1/22 4,695,000 $5,050,402
The Geo Group, Inc., 5.875%, 10/15/24 4,405,000 $4,724,225
The KEYW Holding Corp., 2.5%, 7/15/19 2,150,000 $1,743,889
The Medicines Co., 2.5%, 1/15/22 (144A) 2,625,000 $2,851,524
Theravance, Inc., 2.125%, 1/15/23 8,215,000 $7,598,894
Thermo Fisher Scientific, Inc. 69,273 $9,005,490
The Ryland Group, Inc., 5.375%, 10/1/22 2,540,000 $2,557,648
TI Group Automotive Systems LLC, Term Loan Facility, 7/1/21 3,003,595 $3,006,097
T-Mobile USA, Inc., 6.5%, 1/15/24 1,200,000 $1,278,317
T-Mobile USA, Inc., 6.542%, 4/28/20 4,300,000 $4,594,385
T-Mobile USA, Inc., 6.633%, 4/28/21 2,865,000 $3,063,480
T-Mobile USA, Inc., 6.731%, 4/28/22 2,000,000 $2,141,218
TMS International Corp., 7.625%, 10/15/21 (144A) 2,165,000 $2,242,226
Tmus 6.625% 01apr23 3,180,000 $3,452,851
TMX Finance LLC, 8.5%, 9/15/18 (144A) 3,265,000 $2,753,982
Tower Automotive Holdings USA LLC, Refinancing Term Loan, 4/23/20 7,994,600 $7,987,940
Tronox Finance LLC, 6.375%, 8/15/20 5,195,000 $5,187,478
Twitter, Inc., 0.25%, 9/15/19 (144A) 2,055,000 $1,998,216
U.S. Treasury Floating Rate Note, 0.090001011%, 7/31/16 5,000,000 $5,000,066
United Continental Holdings, Inc. 103,547 $6,749,193
United Continental Holdings, Inc., 6.0%, 7/15/26 3,200,000 $3,190,933
United States Treasury Floating Rate Note, Floating Rate Note, 1/31/16 5,000,000 $5,000,138
United States Treasury Floating Rate Note, Floating Rate Note, 10/31/16 5,000,000 $4,997,885
United States Treasury Floating Rate Note, Floating Rate Note, 4/30/16 5,000,000 $5,000,867
Universal Hospital Services, Inc., 7.625%, 8/15/20 1,265,000 $1,081,896
Univision Communications, Inc., Replacement First-Lien Term Loan, 3/1/20 1,413,808 $1,412,151
Vanguard Natural Resources LLC, 7.875%, 4/1/20 3,200,000 $3,026,900
Vericrest Opportunity Loan Transferee 2014-NPL4 LLC, 4.0%, 4/27/54 (Step) (144A) 1,000,000 $987,599
Vers 2015-A Zero% 31dec17 4,400,000 $4,434,320
Vertafore, Inc., Term Loan (2013), 10/3/19 668,841 $668,910
ViaSat, Inc., 6.875%, 6/15/20 3,000,000 $3,206,823
Viasystems, Inc., 7.875%, 5/1/19 (144A) 5,300,000 $5,727,147
Videotron, Ltd., 5.375%, 6/15/24 (144A) 9,050,000 $9,623,764
Viking Cruises, Ltd., 8.5%, 10/15/22 (144A) 4,290,000 $4,928,793
Virgin Media Investment Holdings, Ltd., B Facility, 6/8/20 7,575,000 $7,568,493
Virtual Radiologic Corp., Term Loan A, 12/22/16 1,104,588 $858,817
Vishay Intertechnology, Inc., 2.25%, 5/15/41 (144A) 3,755,000 $3,326,226
Voya Financial, Inc., Floating Rate Note, 5/15/53 4,200,000 $4,425,394
Waters Corp. 7,367 $886,839
WCA Waste Corp., Term Loan, 3/23/18 617,538 $611,620
WCP ISSUER LLC, 6.657%, 8/15/43 (144A) 3,350,000 $3,588,835
WebMD Health Corp., 1.5%, 12/1/20 5,145,000 $5,499,928
WebMD Health Corp., 2.5%, 1/31/18 6,420,000 $6,549,738
WellCare Health Plans, Inc., 5.75%, 11/15/20 5,370,000 $5,726,844
Wells Fargo & Co., 7.5% (Perpetual) 2,000 $2,424,920
Wells Fargo & Co., Floating Rate Note (Perpetual) 3,675,000 $3,888,928
WESCO Distribution, Inc., 5.375%, 12/15/21 5,145,000 $5,271,821
Westgate Resorts 2012-A LLC, 3.75%, 8/20/25 (144A) 700,000 $350,081
Windstream Corp., 6.375%, 8/1/23 4,975,000 $4,600,787
Windstream Corp., 7.5%, 6/1/22 8,830,000 $8,857,594
Windstream Corp., 7.75%, 10/15/20 3,460,000 $3,679,129
Windstream Holdings, Inc. 585,800 $4,621,962
WMG Acquisition Corp., 6.75%, 4/15/22 (144A) 2,665,000 $2,598,208
Wmgi 2% 15feb20 144a 2,610,000 $2,649,694
Xerium Technologies, Inc., 8.875%, 6/15/18 2,660,000 $2,814,271

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.