| TOP INSTITUTIONAL HOLDERS |
| Holder | Shares | % Out | Value* | Reported | | Barclays Global Investors UK Holdings Ltd | 3,104,030 | 6.84 | $17,910,253 | 30-Sep-09 | | RENAISSANCE TECHNOLOGIES, LLC | 2,959,800 | 6.52 | $17,078,046 | 30-Sep-09 | | COLUMBIA WANGER ASSET MANAGEMENT, L.P. | 2,905,000 | 6.40 | $16,761,850 | 30-Sep-09 | | DIMENSIONAL FUND ADVISORS LP | 1,530,337 | 3.37 | $8,830,044 | 30-Sep-09 | | ROTHSCHILD ASSET MANAGEMENT INC | 1,322,760 | 2.91 | $7,632,325 | 30-Sep-09 | | WEINTRAUB CAPITAL MANAGEMENT LLC | 1,268,757 | 2.79 | $7,320,727 | 30-Sep-09 | | PRAESIDIUM INVESTMENT MANAGEMENT COMPANY LLC | 1,040,402 | 2.29 | $6,003,119 | 30-Sep-09 | | VANGUARD GROUP, INC. (THE) | 1,002,620 | 2.21 | $5,785,117 | 30-Sep-09 | | STATE STREET CORPORATION | 951,066 | 2.10 | $5,487,650 | 30-Sep-09 | | EPOCH INVESTMENT PARTNERS, INC. | 946,190 | 2.08 | $5,459,516 | 30-Sep-09 |
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| Holder | Shares | % Out | Value* | Reported | | COLUMBIA ACORN FD | 2,785,803 | 6.14 | $13,371,854 | 30-Jun-09 | | ISHARES RUSSELL 2000 INDEX FD | 657,380 | 1.45 | $3,793,082 | 30-Sep-09 | | BRIDGEWAY FDS INC-ULTRA SMALL COMPANY MARKET FD | 652,030 | 1.44 | $3,129,744 | 30-Jun-09 | | DFA U.S. MICRO CAP SERIES | 599,387 | 1.32 | $2,217,731 | 30-Apr-09 | | Principal Capital Appreciation Fund | 578,550 | 1.27 | $2,777,040 | 30-Jun-09 | | VANGUARD EXPLORER FUND, INC. | 524,038 | 1.15 | $2,740,718 | 31-Jul-09 | | AMERICAN CENTURY NEW OPPORTUNITIES II FUND | 513,311 | 1.13 | $2,961,804 | 30-Sep-09 | | TURNER EMERGING GROWTH FUND | 508,920 | 1.12 | $2,442,816 | 30-Jun-09 | | ISHARES RUSSELL 2000 GROWTH INDEX FD | 343,989 | .76 | $1,984,816 | 30-Sep-09 | | NEEDHAM GROWTH FUND | 321,854 | .71 | $1,544,899 | 30-Jun-09 |
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Value shown is computed using the security's price on the report date given.
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