Pioneer Oak Ridge Small Cap Growth Fund

Top 10 Portfolio Holdings as of 3/28/2013
Default: sorted by market value

Security Name Par / Shares Market Value
ACTUANT CORP 838,800 $25,684,056
AFFILIATED MANAGERS 197,500 $30,330,075
AKORN INC 2,947,400 $40,762,542
ALIGN TECHNOLOGY INC 1,185,500 $39,726,105
ALTRA HOLDINGS INC 872,930 $23,761,155
ANSYS INC 292,521 $23,817,060
AO SMITH CORP 620,466 $45,647,684
APPROACH RESOURCES I 802,300 $19,744,603
BANKUNITED INC 1,211,858 $31,047,802
BEACON ROOFING SUPPL 769,200 $29,737,272
BUFFALO WILD WINGS I 159,500 $13,961,035
CARDTRONICS INC 962,667 $26,434,836
CHILDREN'S PLACE RET 507,900 $22,764,078
CLARCOR INC 307,679 $16,116,226
COLFAX CORP 802,400 $37,343,696
DECKERS OUTDOOR CORP 271,500 $15,119,835
DICE HOLDINGS INC 2,153,200 $21,811,916
ELLIE MAE INC 515,840 $12,405,952
GLOBUS MEDICAL INC 1,047,797 $15,381,660
GULFPORT ENERGY CORP 855,000 $39,184,650
HAEMONETICS CORP 608,610 $25,354,693
HERITAGE-CRYSTAL CLE 200,000 $3,020,000
HITTITE MICROWAVE CO 540,442 $32,729,168
HSN INC 320,000 $17,555,200
KEYW HOLDING CORP/TH 1,817,593 $29,317,775
LKQ CORP 1,776,526 $38,657,206
MICROS SYSTEMS INC 401,270 $18,261,798
MIDDLEBY CORP 235,104 $35,771,074
MWI VETERINARY SUPPL 300,335 $39,722,307
OASIS PETROLEUM INC 834,000 $31,750,380
OMNICELL INC 1,592,409 $30,064,682
PORTFOLIO RECOVERY A 319,899 $40,601,581
PROASSURANCE CORP 319,710 $15,131,874
QUESTCOR PHARMACEUTI 821,700 $26,738,118
REALPAGE INC 1,070,554 $22,171,173
ROADRUNNER TRANSPORT 842,500 $19,377,500
SALIX PHARMACEUTICAL 02/18/12 STRIKE 55 776,600 $39,746,388
SANDRIDGE ENERGY INC 1,739,700 $9,168,219
SEACHANGE INTERNATIO 1,267,438 $15,069,838
SIRONA DENTAL SYSTEM 439,200 $32,382,216
SOLARWINDS INC 317,500 $18,764,250
SOLERA HOLDINGS INC 542,100 $31,620,693
SPECTRANETICS CORP 925,000 $17,140,250
STIFEL FINANCIAL COR 727,780 $25,232,133
SYNCHRONOSS TECHNOLO 747,603 $23,198,121
TEXAS ROADHOUSE INC 1,165,300 $23,527,407
TRIUMPH GROUP INC 484,483 $38,031,916
TRUE RELIGION APPARE 742,745 $19,393,072
VIRTUSA CORP 909,075 $21,599,622
VITAMIN SHOPPE INC 530,100 $25,895,385
VOCUS INC 987,900 $13,978,785
WAGEWORKS INC 1,166,900 $29,207,507
WASTE CONNECTIONS IN 760,995 $27,380,600
WATSCO INC 352,000 $29,631,360
WEX INC 572,310 $44,926,335
WOLVERINE WORLD WIDE 699,440 $31,034,153

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.