Pioneer Select Mid Cap Growth Fund

Top 10 Portfolio Holdings as of 3/31/2015
Default: sorted by market value

Security Name Par / Shares Market Value
Acuity Brands, Inc. 28,916 $4,862,515
Advance Auto Parts, Inc. 106,869 $15,997,221
Affiliated Managers Group, Inc. 63,971 $13,739,691
Agrium, Inc. 23,547 $2,455,246
Akamai Technologies, Inc. 277,448 $19,711,293
Align Technology, Inc. 257,647 $13,857,544
Alkermes Plc 228,581 $13,936,584
Alliance Data Systems Corp. 15,981 $4,734,371
American Airlines Group, Inc. 458,969 $24,224,384
American Energy - Utica LLC, 3.5%, 3/1/21 (144A) (PIK) 3,716,000 $1,831,678
ANSYS, Inc. 70,966 $6,258,492
Autodesk, Inc. 151,251 $8,869,359
Avago Technologies, Ltd. 151,917 $19,290,421
Avery Dennison Corp. 104,197 $5,513,063
B/E Aerospace Inc 168,226 $10,702,538
BankUnited, Inc. 106,814 $3,497,090
Berry Plastics Group, Inc. 183,158 $6,628,488
Boardwalk Pipeline Partners LP 284,664 $4,583,090
BorgWarner, Inc. 110,344 $6,673,605
Boston Scientific Corp. 670,423 $11,900,008
Broadcom Corp. 131,072 $5,674,762
Brookdale Senior Living, Inc. 168,426 $6,359,766
Cabot Oil & Gas Corp. 379,413 $11,204,066
Cadence Design Systems, Inc. 314,813 $5,805,152
Cameron International Corp. 52,968 $2,389,916
Cardinal Health, Inc. 164,159 $14,818,633
Carlisle Companies, Inc. 81,866 $7,583,248
Catamaran Corp. 387,623 $23,079,073
Charles River Laboratories International, Inc. 183,365 $14,539,011
Chipotle Mexican Grill, Inc. 11,168 $7,265,231
Cimarex Energy Co. 65,316 $7,517,218
Cintas Corp. 62,865 $5,131,670
comScore, Inc. 121,181 $6,204,467
Constellation Brands, Inc. 111,043 $12,904,307
CoStar Group, Inc. 76,712 $15,175,935
Criteo SA (A.D.R.) 118,321 $4,673,680
CVS Health Corp. 105,864 $10,926,223
Dave & Buster's Entertainment, Inc. 217,109 $6,613,140
Devon Energy Corp. 21,899 $1,320,729
Diamond Foods, Inc. 15,910 $518,189
Discover Financial Services 293,139 $16,518,383
Dollar Tree, Inc. 261,229 $21,197,427
Dynegy, Inc. 27,704 $870,737
Eagle Materials, Inc. 61,893 $5,171,779
Edwards Lifesciences Corp. 91,185 $12,990,215
Endo International Plc 176,675 $15,847,748
Endologix, Inc. 542,931 $9,267,832
F5 Networks, Inc. 69,218 $7,955,917
Facebook, Inc. 146,062 $12,008,487
Five Below, Inc. 93,778 $3,335,683
Flotek Industries, Inc. 200,985 $2,962,519
Gartner, Inc. 67,963 $5,698,698
G-III Apparel Group, Ltd. 88,176 $9,933,026
Google, Inc. 9,458 $5,182,984
Google, Inc. 9,418 $5,224,165
H&R Block, Inc. 277,962 $8,914,241
Hanesbrands, Inc. 294,799 $9,878,714
Hertz Global Holdings, Inc. 167,826 $3,638,468
Hilton Worldwide Holdings, Inc. 230,905 $6,839,406
HomeAway, Inc. 439,597 $13,262,641
Hormel Foods Corp. 109,511 $6,225,700
Hub Group, Inc. 163,897 $6,439,513
Insulet Corp. 256,788 $8,563,880
Intercontinental Exchange, Inc. 57,670 $13,452,681
Intuit, Inc. 97,704 $9,473,380
ITC Holdings Corp. 31,725 $1,187,467
Jack in the Box, Inc. 67,115 $6,437,671
Jazz Pharmaceuticals Plc 106,165 $18,344,250
Kansas City Southern 63,662 $6,498,617
Keurig Green Mountain, Inc. 193,737 $21,646,235
Lear Corp. 218,104 $24,170,285
Level 3 Communications, Inc. 208,083 $11,203,189
Liberty Global Plc 95,000 $4,889,650
Liberty Global Plc 118,966 $5,925,696
LinkedIn Corp. 44,161 $11,034,067
Lithia Motors, Inc. 79,057 $7,859,056
Lorillard, Inc. 81,418 $5,320,666
Lowe's Companies, Inc. 150,376 $11,186,471
Macquarie Infrastructure Co LLC 88,357 $7,270,898
ManpowerGroup, Inc. 121,221 $10,443,189
Martin Marietta Materials, Inc. 33,285 $4,653,243
MasterCard, Inc. 85,639 $7,398,353
Mead Johnson Nutrition Co. 41,676 $4,189,688
Memorial Resource Development Corp. 678,067 $12,028,909
Methanex Corp. 50,079 $2,683,277
Michael Kors Holdings, Ltd. 66,636 $4,381,317
Mobile Mini, Inc. 141,577 $6,036,843
Mohawk Industries, Inc. 30,403 $5,647,357
Molson Coors Brewing Co. (Class B) 116,053 $8,640,146
Monster Beverage Corp. 98,087 $13,574,750
MRC Global, Inc. 356,538 $4,224,975
National Fuel Gas Co. 8,213 $495,490
Netflix, Inc. 21,961 $9,150,929
Neurocrine Biosciences, Inc. 175,892 $6,984,671
Norwegian Cruise Line Holdings, Ltd. 111,447 $6,019,252
Oasis Petroleum, Inc. 362,094 $5,148,977
Old Dominion Freight Line, Inc. 73,469 $5,679,154
Omnicare, Inc. 196,474 $15,140,286
Packaging Corp of America 43,580 $3,407,520
Palo Alto Networks, Inc. 35,483 $5,183,357
Panera Bread Co. 17,723 $2,835,591
PDC Energy, Inc. 50,879 $2,749,501
Performance Sports Group, Ltd. 200,474 $3,909,243
Qlik Technologies, Inc. 254,428 $7,920,344
Regal-Beloit Corp. 76,373 $6,103,730
Rockwell Collins, Inc. 49,309 $4,760,784
Roper Industries, Inc. 48,221 $8,294,012
Ross Stores, Inc. 70,934 $7,473,606
RPM International, Inc. 85,750 $4,115,143
Ryder System, Inc. 101,298 $9,612,167
Sabre Corp. 263,711 $6,408,177
salesforce.com inc 113,331 $7,571,644
SBA Communications Corp. 119,054 $13,941,223
SemGroup Corp. 78,991 $6,425,128
ServiceNow, Inc. 77,082 $6,072,520
Shire Plc (A.D.R.) 71,255 $17,050,609
Signature Bank/New York NY 52,338 $6,781,958
Signet Jewelers, Ltd. 59,431 $8,248,428
Skyworks Solutions, Inc. 297,512 $29,242,454
Sonic Corp. 242,016 $7,671,907
Southwest Airlines Co. 53,013 $2,348,476
Splunk, Inc. 93,292 $5,522,886
SS&C Technologies Holdings, Inc. 94,154 $5,865,794
Synaptics, Inc. 56,888 $4,625,279
Tableau Software, Inc. 53,747 $4,972,672
TESARO, Inc. 117,321 $6,734,225
Tesoro Corp. 26,726 $2,439,817
The Blackstone Group LP 198,312 $7,712,354
The Kroger Co. 217,140 $16,645,952
The Manitowoc Co, Inc. 253,197 $5,458,927
The NASDAQ OMX Group, Inc. 331,465 $16,884,827
The Sherwin-Williams Co. 26,771 $7,616,350
The TJX Companies, Inc. 108,909 $7,629,075
Towers Watson & Co. 115,250 $15,234,321
Tractor Supply Co. 135,399 $11,517,039
TripAdvisor, Inc. 112,849 $9,385,651
Twitter, Inc. 190,234 $9,526,919
Tyson Foods, Inc. 207,632 $7,952,306
Ulta Salon Cosmetics & Fragrance, Inc. 37,317 $5,629,269
United Continental Holdings, Inc. 234,136 $15,745,646
United Rentals, Inc. 78,612 $7,166,270
UTi Worldwide, Inc. 303,000 $3,726,900
Vertex Pharmaceuticals, Inc. 107,456 $12,676,584
WABCO Holdings, Inc. 109,046 $13,399,572
Wabtec Corp./DE 58,839 $5,590,293
WageWorks, Inc. 106,210 $5,664,179
WellCare Health Plans, Inc. 84,382 $7,717,578
Westlake Chemical Corp. 120,833 $8,692,726
Weyerhaeuser Co. 407,069 $13,494,337
Whirlpool Corp. 37,479 $7,573,007
Whiting Petroleum Corp. 251,108 $7,759,237
WR Grace & Co. 62,685 $6,197,666

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

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