FRONTIER CAPITAL MANAGEMENT CO LLC Information

99 SUMMER STREET, BOSTON, Massachusetts, 02110,

Report Date: 12/31/2013

Position Statistics

Total Positions 334
New Positions 16
Increased Positions 128
Decreased Positions 206
Positions with Activity 334
Sold Out Positions 25
Total Mkt Value (in $ millions) 13,670

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

Sector Weighting

Basic Materials 6.66%
Capital Goods 11.91%
Conglomerates 0.08%
Consumer Cyclical 8.41%
Consumer/Non-Cyclical 0.44%
Energy 7.87%
Financial 12.27%
Healthcare 12.31%
Services 11.39%
Technology 21.37%
Transportation 5.11%
Utilities 0.83%

334 Activity Positions as of 12/31/2013

Company Class Value of Shares ($1,000s) ▼ Change in Value ($1,000s) Change (%) Shares Held
CELANESE CORP DEL COM SER A 55,298 -6,398 (10.37) 960,540
ARMSTRONG WORLD INDS INC NEW COM 55,151 13,939 33.82 1,027,781
CATAMARAN CORP COM 54,647 13,579 33.07 1,397,979
AKAMAI TECHNOLOGIES INC COM 53,918 -19,236 (26.3) 992,972
AON PLC SHS CL A 53,802 53,802 New 655,006
SAIA INC COM 53,028 14,155 36.41 1,396,211
HCC INS HLDGS INC COM 52,983 4,236 8.69 1,167,027
MERITOR INC COM 52,470 -2,753 (4.99) 4,488,479
PRIMORIS SVCS CORP COM 51,815 -1,464 (2.75) 1,872,589
ROGERS CORP COM 51,259 -2,688 (4.98) 844,885
CHARLES RIV LABS INTL INC COM 50,930 2,485 5.13 892,101
MODINE MFG CO COM 49,905 4,364 9.58 3,482,539
VIRTUSA CORP COM 49,786 -18,540 (27.14) 1,489,262
GARTNER INC COM 49,663 -2,126 (4.11) 734,979
ASPEN INSURANCE HOLDINGS LTD SHS 49,608 5,443 12.33 1,116,039
ROVI CORP COM 49,542 -2,508 (4.82) 2,283,024
SMITH A O COM 48,730 -3,741 (7.13) 1,047,285
CYTEC INDS INC COM 48,531 1,117 2.36 496,484
SELECT COMFORT CORP COM 48,197 2,463 5.39 2,715,321
INCYTE CORP COM 48,072 -25,276 (34.46) 1,079,304