Pioneer Oak Ridge Small Cap Growth Fund

Top 10 Portfolio Holdings as of 2/28/2014
Default: sorted by market value

Security Name Par / Shares Market Value
Acadia Healthcare Co, Inc. 692,325 $34,228,548
Actuant Corp. 938,800 $32,914,328
Affiliated Managers Group, Inc. 104,300 $19,613,615
Akorn, Inc. 3,453,100 $89,159,042
Align Technology, Inc. 527,000 $27,577,910
Altra Industrial Motion Corp. 852,617 $30,182,642
Annie's, Inc. 441,000 $16,528,680
ANSYS, Inc. 224,321 $18,735,290
AO Smith Corp. 1,007,732 $50,084,280
Approach Resources, Inc. 882,300 $19,648,821
BankUnited, Inc. 1,336,858 $44,758,006
Beacon Roofing Supply, Inc. 1,118,500 $42,268,115
Cardtronics, Inc. 1,087,667 $44,072,267
CLARCOR, Inc. 401,738 $23,272,682
Colfax Corp. 852,400 $60,631,212
Deckers Outdoor Corp. 299,000 $22,230,650
Dice Holdings, Inc. 2,153,200 $15,847,552
Ellie Mae, Inc. 540,840 $16,766,040
EPAM Systems, Inc. 1,026,505 $43,041,355
Globus Medical, Inc. 1,732,639 $40,994,239
Group 1 Automotive, Inc. 521,681 $34,827,424
Gulfport Energy Corp. 437,699 $28,931,904
Halcon Resources Corp. 2,000,000 $7,620,000
Hittite Microwave Corp. 591,840 $34,906,723
InvenSense, Inc. 1,835,000 $36,975,250
Keryx Biopharmaceuticals, Inc. 1,386,300 $22,250,115
LKQ Corp. 659,926 $18,405,336
MAXIMUS, Inc. 625,000 $29,868,750
Monro Muffler Brake, Inc. 605,695 $36,141,821
MWI Veterinary Supply, Inc. 342,835 $55,854,678
NPS Pharmaceuticals, Inc. 1,566,100 $54,782,178
Oasis Petroleum, Inc. 819,000 $35,683,830
Omnicell, Inc. 1,567,409 $45,110,031
Portfolio Recovery Associates, Inc. 1,074,697 $58,280,818
ProAssurance Corp. 304,710 $13,852,117
Proofpoint, Inc. 280,326 $11,619,513
Questcor Pharmaceuticals, Inc. 856,700 $52,044,525
RealPage, Inc. 1,125,554 $19,922,306
Roadrunner Transportation Systems, Inc. 1,167,500 $27,447,925
Sapient Corp. 1,315,700 $22,906,337
Seachange International, Inc. 1,747,885 $18,440,187
Sirona Dental Systems, Inc. 441,700 $31,122,182
Solera Holdings, Inc. 612,100 $41,879,882
Spectranetics Corp. 1,584,076 $47,458,917
Stifel Financial Corp. 760,280 $36,561,865
Synchronoss Technologies, Inc. 1,161,097 $39,918,515
Texas Roadhouse, Inc. 1,290,300 $34,128,435
The Fresh Market, Inc. 353,000 $11,825,500
The KEYW Holding Corp. 1,817,593 $33,261,952
The Middleby Corp. 247,604 $73,429,442
TriMas Corp. 515,600 $17,329,316
United Natural Foods, Inc. 317,500 $22,980,650
Virtusa Corp. 979,075 $35,608,958
Vitamin Shoppe, Inc. 580,100 $27,142,879
WageWorks, Inc. 751,900 $44,474,885
Waste Connections, Inc. 778,495 $33,685,479
Watsco, Inc. 493,600 $48,560,368
WEX, Inc. 624,810 $60,494,104
Wolverine World Wide, Inc. 1,563,880 $41,223,877

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.