Pioneer Select Mid Cap Growth Fund

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

Security Name Par / Shares Market Value
ACTAVIS INC 70,200 $6,466,122
AGILENT TECHNOLOGIES 52,300 $2,195,031
AIRGAS INC 22,600 $2,241,016
AKAMAI TECHNOLOGIES 151,933 $5,361,716
AKORN INC 185,000 $2,558,550
ALASKA AIR GROUP INC 45,000 $2,878,200
ALIGN TECHNOLOGY INC 141,900 $4,755,069
ALKERMES PLC 170,400 $4,040,184
ALLIANCE DATA SYSTEM 31,300 $5,067,157
AMERICAN CAMPUS COMM 85,000 $3,853,900
AMERICAN EAGLE OUTFI 92,000 $1,720,400
ANALOG DEVICES INC 90,000 $4,184,100
ANSYS INC 21,982 $1,789,774
AQUA AMERICA INC 31,700 $996,648
ARMSTRONG WORLD INDU 16,800 $938,952
ARUBA NETWORKS INC 105,590 $2,612,297
AUTODESK INC 90,000 $3,711,600
AVAGO TECHNOLOGIES L 50,000 $1,796,000
BASIC ENERGY SERVICE 105,200 $1,438,084
BILL BARRETT CORP 90,800 $1,840,516
BLACKSTONE GROUP LP 145,000 $2,868,100
BONANZA CREEK ENERGY 36,500 $1,411,455
BRINKER INTERNATIONA 75,000 $2,823,750
BROADCOM CORP 115,000 $3,987,050
BROOKDALE SENIOR LIV 115,000 $3,206,200
BUFFALO WILD WINGS I 54,000 $4,726,620
CABOT OIL & GAS CORP 163,394 $11,047,068
CAMERON INTERNATIONA 47,400 $3,090,480
CANADIAN DOLLARS 5,356 $5,268
CARMAX INC 125,000 $5,212,500
CATAMARAN CORP 48,690 $2,582,031
CHART INDUSTRIES INC 43,000 $3,440,430
CHIPOTLE MEXICAN GRI 9,500 $3,095,765
CINEMARK HOLDINGS IN 160,000 $4,710,400
CITRIX SYSTEMS INC 50,700 $3,658,512
COBALT INTERNATIONAL 60,000 $1,692,000
CONCHO RESOURCES INC 22,900 $2,231,147
COPA HOLDINGS SA 38,400 $4,593,024
COSTAR GROUP INC 49,000 $5,363,540
CUBIST PHARMACEUTICA 76,400 $3,577,048
DAVITA HEALTHCARE PA 29,300 $3,474,687
DELTA AIR LINES INC 158,900 $2,623,439
DIANA SHIPPING INC 279,000 $2,974,140
DISCOVER FINANCIAL S 100,000 $4,484,000
DISCOVERY COMMUNICAT 40,000 $3,149,600
DOLLAR GENERAL CORP 56,000 $2,832,480
DOLLAR TREE INC 50,962 $2,468,090
DRESSER-RAND GROUP I 29,000 $1,788,140
EAGLE MATERIALS INC 51,000 $3,398,130
EASTMAN CHEMICAL CO 20,100 $1,404,387
EATON CORP PLC 37,900 $2,321,375
EBAY INC 42,000 $2,277,240
EVERCORE PARTNERS IN 40,000 $1,664,000
EXACTTARGET INC 115,012 $2,676,329
FIDELITY NATIONAL FI 140,000 $3,532,200
FLOTEK INDUSTRIES IN 200,000 $3,270,000
FMC TECHNOLOGIES INC 69,000 $3,752,910
FOMENTO ECONOMICO ME 41,700 $4,732,950
FORTUNE BRANDS HOME 70,000 $2,620,100
GARTNER INC 51,000 $2,774,910
GENPACT LTD 220,000 $4,001,800
GOOGLE INC 8,100 $6,431,643
GREEN MOUNTAIN COFFE 169,000 $9,592,440
HARLEY-DAVIDSON INC 69,000 $3,677,700
HERTZ GLOBAL HOLDING 55,700 $1,239,882
HOLOGIC INC 244,600 $5,527,960
HOMEAWAY INC 160,000 $5,200,000
ILLUMINA INC 46,300 $2,500,200
IMAX CORP 198,000 $5,292,540
INGERSOLL-RAND PLC 81,300 $4,472,313
INGREDION INC 41,000 $2,965,120
INSULET CORP 107,900 $2,790,294
INTERFACE INC 61,800 $1,187,796
JAZZ PHARMACEUTICALS 78,581 $4,393,464
JONES LANG LASALLE I 58,800 $5,845,308
KANSAS CITY SOUTHERN 25,500 $2,827,950
LEAR CORP 119,000 $6,529,530
LENNAR CORP 57,000 $2,364,360
LIBERTY GLOBAL INC 40,000 $2,936,000
LINCOLN ELECTRIC HOL 46,900 $2,541,042
LINKEDIN CORP 21,000 $3,697,260
LKQ CORP 405,600 $8,825,856
LOWE'S COS INC 145,000 $5,498,400
LYONDELLBASELL INDUS 23,800 $1,506,302
MANITOWOC CO INC/THE 225,000 $4,626,000
MASCO CORP 134,000 $2,713,500
MASIMO CORP 86,700 $1,701,054
MASTERCARD INC 13,100 $7,088,803
MAXIM INTEGRATED PRO 115,000 $3,754,750
METHANEX CORP 59,800 $2,429,674
MICHAEL KORS HOLDING 91,000 $5,167,890
MONSTER BEVERAGE COR 45,000 $2,148,300
NATIONAL FUEL GAS CO 25,000 $1,533,750
NIELSEN HOLDINGS NV 176,000 $6,304,320
NOBLE ENERGY INC 8,200 $950,924
NPS PHARMACEUTICALS 286,000 $2,914,340
NUANCE COMMUNICATION 115,000 $2,320,700
ONYX PHARMACEUTICALS 22,100 $1,963,806
PALO ALTO NETWORKS I 33,000 $1,867,800
PDC ENERGY INC 32,300 $1,601,111
PIONEER NATURAL RESO 18,100 $2,248,925
PRICELINE.COM INC 4,000 $2,751,720
QLIK TECHNOLOGIES IN 140,000 $3,616,200
RANGE RESOURCES CORP 31,000 $2,512,240
REGENERON PHARMACEUT 13,900 $2,451,960
ROCK TENN CO 35,000 $3,247,650
ROSS STORES INC 82,400 $4,995,088
SALESFORCE.COM INC 18,000 $3,218,940
SALIX PHARMACEUTICAL 02/18/12 STRIKE 55 101,600 $5,199,888
SANDISK CORP 84,089 $4,624,895
SBA COMMUNICATIONS C 35,000 $2,520,700
SCOTTS MIRACLE-GRO C 46,400 $2,006,336
SEMGROUP CORP 80,900 $4,184,148
SEMPRA ENERGY 5,900 $471,646
SKYWORKS SOLUTIONS I 165,000 $3,634,950
SOUTHWESTERN ENERGY 67,200 $2,503,872
SS&C TECHNOLOGIES HO 111,320 $3,337,374
STEEL DYNAMICS INC 121,700 $1,931,379
SUPERIOR ENERGY SERV 39,100 $1,015,427
TANGOE INC 300,000 $3,717,000
TEREX CORP 41,600 $1,431,872
TJX COS INC 146,000 $6,825,500
TRACTOR SUPPLY CO 37,000 $3,852,810
TRILOGY ENERGY CORP 44,300 $1,276,858
TRUE RELIGION APPARE 90,000 $2,349,900
TW TELECOM INC 125,000 $3,148,750
UNITED RENTALS INC 135,800 $7,464,926
URBAN OUTFITTERS INC 55,800 $2,161,692
US AIRWAYS GROUP 255,300 $4,332,441
VALSPAR CORP 27,100 $1,686,975
VERISK ANALYTICS INC 32,000 $1,972,160
VERTEX PHARMACEUTICA 48,100 $2,644,538
VIROPHARMA INC 73,200 $1,841,712
VULCAN MATERIALS CO 66,000 $3,412,200
WALTER INVESTMENT MA 67,669 $2,520,670
WESTLAKE CHEMICAL CO 18,400 $1,720,400
WEX INC 30,000 $2,355,000
WHOLE FOODS MARKET I 427 $37,042
WR GRACE & CO 47,000 $3,642,970
WW GRAINGER INC 12,300 $2,767,254
WYNDHAM WORLDWIDE CO 76,800 $4,952,064
XILINX INC 85,000 $3,244,450

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.