FRONTIER CAPITAL MANAGEMENT CO LLC Information

99 SUMMER STREET, BOSTON, Massachusetts, 02110,

Report Date: 03/31/2013

Position Statistics:

Total Positions 342
New Positions 29
Increased Positions 180
Decreased Positions 162
Positions with Activity 342
Sold Out Positions 27
Total Mkt Value
(in $ millions)
11,303

Sector Weighting

Basic Materials 7.3%
Capital Goods 9.44%
Conglomerates 0.05%
Consumer Cyclical 7.73%
Consumer/Non-Cyclical 0.51%
Energy 8.46%
Financial 11.87%
Healthcare 13.46%
Services 15.32%
Technology 21.02%
Transportation 4.55%
Utilities 0.3%

Institutional Holdings information is filed by major institutions on form 13-F with the Securities and Exchange Commission.

342 Activity Positions as of 03/31/2013

Company Class Value of Shares ($1,000s) Change in Value ($1,000s) Change (%) Shares Held
FIDELITY NATIONAL FINANCIAL IN CL A 103,039 5,509 5.65 4,228,109
HENRY JACK & ASSOC INC COM 102,842 5,288 5.42 2,208,806
LKQ CORP COM 102,838 18,380 21.76 4,128,391
COGENT COMM GROUP INC COM NEW 101,769 -3,572 (3.39) 3,565,832
CARRIZO OIL & GAS INC COM 101,726 10,499 11.51 3,687,070
HARLEY-DAVIDSON INC COM 101,599 29,308 40.54 1,763,561
WATSCO INC COM 95,145 -4,409 (4.43) 1,085,385
CADENCE DESIGN SYSTEM INC COM 94,968 11,396 13.64 6,486,883
WABCO HLDGS INC COM 93,203 -4,319 (4.43) 1,236,443
ONYX PHARMACEUTICALS INC COM 91,491 31,418 52.30 983,458
SMITH A O COM 91,413 9,113 11.07 2,356,012
CONTINENTAL RESOURCES INC COM 89,410 9,281 11.58 1,058,729
KAR AUCTION SVCS INC COM 89,045 6,691 8.12 3,758,739
INSULET CORP COM 86,765 -528 (0.61) 3,024,211
WORLD FUEL SVCS CORP COM 85,555 -5,479 (6.02) 2,086,716
ILLUMINA INC COM 83,243 -1,293 (1.53) 1,177,572
EAGLE MATERIALS INC COM 82,545 37,254 82.26 1,111,263
DEXCOM INC COM 82,294 -2,269 (2.68) 4,041,943
WEX INC COM 79,373 7,042 9.74 1,082,560
DISCOVERY COMMUNICATNS NEW COM SER A 78,779 10,939 16.13 995,316

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