| TOP INSTITUTIONAL HOLDERS |
| Holder | Shares | % Out | Value* | Reported | | ADAGE CAPITAL PARTNERS GP, L.L.C. | 1,545,200 | 4.03 | $26,175,688 | 30-Sep-09 | | FEDERATED INVESTORS, INC. | 1,415,327 | 3.69 | $23,975,639 | 30-Sep-09 | | BAMCO INC. | 1,350,000 | 3.52 | $22,869,000 | 30-Sep-09 | | CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | 1,051,659 | 2.74 | $15,943,150 | 30-Jun-09 | | NEXT CENTURY GROWTH INVESTORS LLC | 907,155 | 2.36 | $15,367,205 | 30-Sep-09 | | Crestwood Capital Management, L.P. | 812,200 | 2.12 | $13,758,668 | 30-Sep-09 | | COLUMBUS CIRCLE INVESTORS | 806,469 | 2.10 | $13,661,584 | 30-Sep-09 | | VANGUARD GROUP, INC. (THE) | 651,033 | 1.70 | $11,028,499 | 30-Sep-09 | | FRONTIER CAPITAL MANAGEMENT COMPANY INC | 642,100 | 1.67 | $10,877,174 | 30-Sep-09 | | ROTHSCHILD ASSET MANAGEMENT INC | 637,035 | 1.66 | $10,791,372 | 30-Sep-09 |
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| Holder | Shares | % Out | Value* | Reported | | FEDERATED KAUFMANN SMALL CAP FUND | 1,051,400 | 2.74 | $19,293,190 | 31-Jul-09 | | WASATCH SMALL CAP GROWTH FUND | 307,198 | .80 | $4,657,121 | 30-Jun-09 | | Advanced Series Tr-AST/Federated Aggressive Growth Port | 306,100 | .80 | $4,640,476 | 30-Jun-09 | | BNY-MELLON SMALL CAP STOCK FUND | 226,400 | .59 | $3,835,216 | 30-Sep-09 | | OPPENHEIMER DISCOVERY FUND | 203,800 | .53 | $3,089,608 | 30-Jun-09 | | RUSSELL (FRANK) U.S. SMALL & MID CAP FUND | 203,709 | .53 | $3,450,830 | 30-Sep-09 | | ISHARES RUSSELL 2000 INDEX FD | 187,374 | .49 | $3,174,115 | 30-Sep-09 | | Columbia Fds Ser Tr I-Columbia Small Cap Growth Fd | 181,415 | .47 | $3,134,851 | 31-Aug-09 | | VANGUARD SMALL-CAP INDEX FUND | 177,577 | .46 | $2,692,067 | 30-Jun-09 | | MFS NEW DISCOVERY FUND | 172,250 | .45 | $2,976,480 | 31-Aug-09 |
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Value shown is computed using the security's price on the report date given.
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