Pioneer Mid Cap Value Fund

Top 10 Portfolio Holdings as of 5/31/2016
Default: sorted by market value

Security Name Par / Shares Market Value
Agrium, Inc. 76,138 $6,867,648
Amdocs, Ltd. 235,549 $13,659,487
Boston Scientific Corp. 1,039,431 $23,605,478
Cabot Oil & Gas Corp. 391,709 $9,389,265
Cardinal Health, Inc. 167,114 $13,193,650
Cathay General Bancorp 473,935 $14,606,677
Celanese Corp. 203,177 $14,319,915
Cimarex Energy Co. 146,133 $16,992,345
Citrix Systems, Inc. 132,063 $11,214,790
Concho Resources, Inc. 127,580 $15,480,557
Corporate Office Properties Trust 535,196 $14,466,348
Crown Castle International Corp. 202,692 $18,406,461
Crown Holdings, Inc. 275,464 $14,370,957
Digital Realty Trust, Inc. 191,478 $18,276,575
Duke Realty Corp. 701,694 $16,609,097
Edison International 215,602 $15,443,571
Equinix, Inc. 53,006 $19,188,172
Essex Property Trust, Inc. 57,019 $12,956,427
Eversource Energy 246,659 $13,625,443
Expeditors International of Washington, Inc. 197,286 $9,578,235
Federal Realty Investment Trust 71,376 $10,934,089
First Horizon National Corp. 850,329 $12,380,790
First Solar, Inc. 281,888 $13,995,739
Fluor Corp. 201,349 $10,627,200
Fortune Brands Home & Security, Inc. 373,069 $21,887,958
General Growth Properties, Inc. 360,214 $9,678,950
Harris Corp. 150,815 $11,879,698
Healthcare Realty Trust, Inc. 292,223 $9,289,769
Huntington Bancshares, Inc./OH 946,573 $9,891,688
Ingredion, Inc. 134,617 $15,805,382
Intercontinental Exchange, Inc. 87,291 $23,666,336
IPG Photonics Corp. 163,448 $14,118,638
Jazz Pharmaceuticals Plc 116,371 $17,637,189
KeyCorp 837,412 $10,735,622
Lincoln National Corp. 311,788 $14,295,480
Memorial Resource Development Corp. 654,873 $10,346,993
Microsemi Corp. 475,483 $16,085,590
Mid-America Apartment Communities, Inc. 144,671 $14,899,666
Nasdaq, Inc. 291,140 $19,218,151
Newmont Mining Corp. 357,387 $11,582,913
Norwegian Cruise Line Holdings, Ltd. 271,562 $12,603,192
NVIDIA Corp. 453,065 $21,167,197
ON Semiconductor Corp. 1,362,852 $13,315,064
Owens Corning 442,615 $22,604,348
PACCAR, Inc. 167,895 $9,360,146
Pioneer Natural Resources Co. 89,998 $14,428,479
Public Service Enterprise Group, Inc. 355,230 $15,896,543
Ross Stores, Inc. 250,831 $13,394,375
Schlumberger, Ltd. 137,611 $10,499,719
The Goodyear Tire & Rubber Co. 882,115 $24,672,757
The Hanover Insurance Group, Inc. 204,836 $17,755,184
The Hartford Financial Services Group, Inc. 325,598 $14,707,262
The Hershey Co. 151,176 $14,036,692
The Interpublic Group of Companies, Inc. 583,720 $13,950,908
The JM Smucker Co. 101,542 $13,114,149
Total System Services, Inc. 197,426 $10,601,776
Tyson Foods, Inc. 342,798 $21,863,656
UDR, Inc. 342,853 $12,352,994
United Continental Holdings, Inc. 432,602 $19,506,024
United Rentals, Inc. 105,226 $7,331,095
Unum Group 474,245 $17,509,125
Whirlpool Corp. 114,912 $20,065,933
XL Group Plc 480,932 $16,520,014

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.