Pioneer Select Mid Cap Growth Fund

Top 10 Portfolio Holdings as of 4/30/2015
Default: sorted by market value

Security Name Par / Shares Market Value
Acuity Brands, Inc. 38,026 $6,348,441
Advance Auto Parts, Inc. 106,869 $15,282,267
Affiliated Managers Group, Inc. 63,445 $14,346,818
Agrium, Inc. 23,547 $2,440,176
Akamai Technologies, Inc. 277,448 $20,470,113
Align Technology, Inc. 257,647 $15,159,949
Alkermes Plc 234,538 $12,986,369
Alliance Data Systems Corp. 15,981 $4,751,311
American Airlines Group, Inc. 471,650 $22,773,620
American Energy - Utica LLC, 3.5%, 3/1/21 (144A) (PIK) 3,716,000 $1,786,777
ANSYS, Inc. 70,966 $6,091,721
Autodesk, Inc. 151,251 $8,595,594
Avago Technologies, Ltd. 151,917 $17,756,059
B/E Aerospace Inc 168,226 $10,058,233
BankUnited, Inc. 119,953 $3,941,656
Berry Plastics Group, Inc. 183,158 $6,267,667
Boardwalk Pipeline Partners LP 246,214 $4,311,207
BorgWarner, Inc. 110,344 $6,532,365
Boston Scientific Corp. 957,807 $17,068,121
Broadcom Corp. 131,072 $5,794,038
Brookdale Senior Living, Inc. 156,460 $5,668,546
C&J Energy Services, Ltd. 198,735 $3,467,926
Cabot Oil & Gas Corp. 369,055 $12,481,440
Cadence Design Systems, Inc. 314,813 $5,871,262
Cardinal Health, Inc. 182,975 $15,432,112
Carlisle Companies, Inc. 81,866 $7,900,069
Charles River Laboratories International, Inc. 183,365 $12,681,523
Chart Industries, Inc. 119,513 $4,846,252
Chipotle Mexican Grill, Inc. 11,168 $6,939,125
Cimarex Energy Co. 71,399 $8,882,036
Cintas Corp. 62,865 $5,026,057
comScore, Inc. 121,181 $6,345,037
Constellation Brands, Inc. 111,043 $12,874,325
Core Laboratories NV 53,211 $6,985,540
CoStar Group, Inc. 76,712 $15,682,234
Criteo SA (A.D.R.) 118,321 $4,905,589
CVS Health Corp. 105,864 $10,511,237
Cytec Industries, Inc. 72,103 $3,986,575
Dave & Buster's Entertainment, Inc. 217,109 $6,843,276
Diamond Foods, Inc. 15,910 $446,116
Discover Financial Services 293,139 $16,993,268
Dollar Tree, Inc. 261,229 $19,960,508
Dover Corp. 53,008 $4,013,766
Dynegy, Inc. 27,704 $921,712
Eagle Materials, Inc. 61,893 $5,161,257
Edwards Lifesciences Corp. 91,185 $11,548,580
Endo International Plc 189,768 $15,952,847
Endologix, Inc. 592,992 $9,226,956
F5 Networks, Inc. 69,218 $8,445,980
Facebook, Inc. 146,062 $11,505,304
Five Below, Inc. 93,778 $3,162,194
Flotek Industries, Inc. 200,985 $2,872,076
Gartner, Inc. 67,963 $5,639,570
G-III Apparel Group, Ltd. 88,176 $9,803,408
Google, Inc. 9,483 $5,095,595
Google, Inc. 9,418 $5,168,316
H&R Block, Inc. 277,962 $8,405,571
Hanesbrands, Inc. 215,027 $6,683,039
Hilton Worldwide Holdings, Inc. 230,905 $6,687,009
HomeAway, Inc. 439,597 $12,286,736
Hormel Foods Corp. 109,511 $5,951,923
Hub Group, Inc. 108,238 $4,318,696
Insulet Corp. 256,788 $7,665,122
Intercontinental Exchange, Inc. 59,618 $13,386,030
Intuit, Inc. 97,704 $9,802,642
ITC Holdings Corp. 31,725 $1,142,100
Jack in the Box, Inc. 67,115 $5,823,569
Jazz Pharmaceuticals Plc 105,590 $18,868,933
Kansas City Southern 63,662 $6,524,718
KBR, Inc. 132,253 $2,322,019
Keurig Green Mountain, Inc. 233,925 $27,221,852
Kirby Corp. 99,048 $7,778,239
Lear Corp. 218,104 $24,216,087
Level 3 Communications, Inc. 208,083 $11,640,163
Liberty Global Plc 95,000 $4,953,300
Liberty Global Plc 118,966 $6,001,835
LinkedIn Corp. 44,161 $11,134,313
Lithia Motors, Inc. 79,057 $7,884,355
Lorillard, Inc. 81,418 $5,687,861
Lowe's Companies, Inc. 150,376 $10,354,891
Macquarie Infrastructure Co LLC 88,357 $7,312,425
ManpowerGroup, Inc. 127,989 $10,921,301
Martin Marietta Materials, Inc. 33,285 $4,748,105
MasterCard, Inc. 85,639 $7,725,494
Mead Johnson Nutrition Co. 41,676 $3,997,562
Memorial Resource Development Corp. 652,826 $13,180,557
Methanex Corp. 144,644 $8,709,015
Michael Kors Holdings, Ltd. 66,636 $4,122,103
Mobile Mini, Inc. 141,577 $5,456,378
Mohawk Industries, Inc. 30,403 $5,274,921
Molson Coors Brewing Co. (Class B) 116,053 $8,531,056
Monster Beverage Corp. 98,087 $13,448,709
MRC Global, Inc. 356,538 $5,205,455
Mylan NV 125,894 $9,097,100
National Fuel Gas Co. 8,213 $529,328
Netflix, Inc. 21,961 $12,221,297
Neurocrine Biosciences, Inc. 166,135 $5,663,542
Norwegian Cruise Line Holdings, Ltd. 111,447 $5,406,294
Oasis Petroleum, Inc. 306,807 $5,504,118
Omnicare, Inc. 187,884 $16,530,034
Packaging Corp of America 43,580 $3,015,300
Palo Alto Networks, Inc. 35,483 $5,241,549
Panera Bread Co. 17,723 $3,234,093
PDC Energy, Inc. 50,879 $2,886,874
Performance Sports Group, Ltd. 200,474 $4,069,622
Qlik Technologies, Inc. 254,428 $8,851,550
Red Robin Gourmet Burgers, Inc. 47,981 $3,602,893
Regal Beloit Corp. 73,953 $5,783,125
Rockwell Collins, Inc. 62,941 $6,126,048
Roper Technologies, Inc. 48,221 $8,109,326
Ross Stores, Inc. 70,934 $7,013,954
RPM International, Inc. 60,607 $2,881,257
Ryder System, Inc. 105,639 $10,073,735
Sabre Corp. 263,711 $6,563,767
Salesforce.com inc 113,331 $8,252,763
SBA Communications Corp. 119,054 $13,788,834
SEI Investments Co. 124,650 $5,691,519
SemGroup Corp. 78,991 $6,650,252
ServiceNow, Inc. 77,082 $5,770,359
Shire Plc (A.D.R.) 61,310 $14,929,598
Signature Bank/New York NY 52,338 $7,018,002
Signet Jewelers, Ltd. 59,431 $7,971,480
Skyworks Solutions, Inc. 270,972 $24,997,167
Sonic Corp. 242,016 $6,933,758
Southwest Airlines Co. 37,615 $1,525,664
Splunk, Inc. 93,292 $6,189,458
SS&C Technologies Holdings, Inc. 94,154 $5,665,246
Synaptics, Inc. 56,888 $4,819,551
Tableau Software, Inc. 53,747 $5,258,606
TESARO, Inc. 115,008 $6,264,486
Tesoro Corp. 20,904 $1,794,190
The Blackstone Group LP 174,412 $7,143,916
The Kroger Co. 217,140 $14,963,117
The NASDAQ OMX Group, Inc. 326,143 $15,860,334
The Sherwin-Williams Co. 26,771 $7,442,338
The TJX Companies, Inc. 108,909 $7,028,987
Towers Watson & Co. 115,250 $14,625,801
Tractor Supply Co. 135,399 $11,652,438
TripAdvisor, Inc. 112,849 $9,083,216
Twitter, Inc. 190,234 $7,411,517
Tyson Foods, Inc. 207,632 $8,201,464
Ulta Salon Cosmetics & Fragrance, Inc. 37,317 $5,638,226
United Continental Holdings, Inc. 234,136 $13,987,285
United Rentals, Inc. 85,448 $8,252,568
Ventas, Inc. 74,716 $5,147,932
Vertex Pharmaceuticals, Inc. 114,697 $14,139,846
WABCO Holdings, Inc. 125,118 $15,570,935
Wabtec Corp./DE 58,839 $5,533,808
WageWorks, Inc. 106,210 $5,352,984
WellCare Health Plans, Inc. 84,382 $6,533,698
Westlake Chemical Corp. 120,833 $9,422,557
Weyerhaeuser Co. 238,589 $7,517,939
Whirlpool Corp. 37,479 $6,581,312
Whiting Petroleum Corp. 305,398 $11,577,638
WR Grace & Co. 62,685 $6,062,893

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

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