THOMSON HORSTMANN & BRYANT INC Information

501 MERRITT 7, NORWALK, Connecticut, 06851, (203) 653-7060

Report Date: 03/31/2013

Position Statistics:

Total Positions 277
New Positions 30
Increased Positions 171
Decreased Positions 93
Positions with Activity 264
Sold Out Positions 33
Total Mkt Value
(in $ millions)
1,534

Sector Weighting

Basic Materials 4.81%
Capital Goods 14.21%
Conglomerates 0.22%
Consumer Cyclical 5.84%
Consumer/Non-Cyclical 4.14%
Energy 7.36%
Financial 17.37%
Healthcare 9.11%
Services 15.42%
Technology 17.26%
Transportation 3.11%
Utilities 1.16%

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

277 Positions as of 03/31/2013

Company Class Value of Shares ($1,000s) Change in Value ($1,000s) Change (%) Shares Held
1 800 FLOWERS COM CL A 3,657 1,672 84.21 612,562
AAON INC COM PAR $0.004 18,181 -11,537 (38.82) 551,768
ACCELRYS INC COM 6,029 1,837 43.81 745,279
ACETO CORP COM 327 327 New 25,000
ACTIVE POWER INC COM NEW 4,674 1,898 68.38 1,097,228
AEGEAN MARINE PETROLEUM NETWRK SHS 5,419 -3,840 (41.47) 566,845
AEROPOSTALE COM 8,608 5,747 200.92 619,720
AGREE REALTY CORP COM 7,133 3,012 73.08 224,658
AIR METHODS CORP COM PAR $.06 9,041 -290 (3.11) 236,618
ALIGN TECHNOLOGY INC COM -7,192 Sold Out 0
ALPHA NATURAL RESOURCES INC COM 2,517 787 45.47 432,520
ALTRA HOLDINGS INC COM 7,406 -12,371 (62.55) 272,075
AMERICAN PAC CORP COM 16,446 2,652 19.22 593,720
AMERICAN WOODMARK CORP COM 7,997 -10,161 (55.96) 220,900
ANALOGIC CORP COM PAR $0.05 402 402 New 5,300
ANIXTER INTL INC COM 9,324 -4,359 (31.85) 119,698
ANTARES PHARMA INC COM 3,204 3,204 New 781,545
ASPEN INSURANCE HOLDINGS LTD SHS 910 New 24,100
ATLAS AIR WORLDWIDE HLDGS INC COM NEW 1,065 159 17.53 22,800
ATRICURE INC COM 8,344 2,321 38.54 914,900

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