| TOP INSTITUTIONAL HOLDERS |
| Holder | Shares | % Out | Value* | Reported | | STEADFAST CAPITAL MANAGEMENT LLC | 1,692,287 | 8.28 | $7,107,605 | 30-Sep-09 | | Ancient Art, L.P. | 1,065,603 | 5.21 | $4,475,532 | 30-Sep-09 | | DIMENSIONAL FUND ADVISORS LP | 514,225 | 2.51 | $2,159,745 | 30-Sep-09 | | Portolan Capital Management, LLC | 408,994 | 2.00 | $1,717,774 | 30-Sep-09 | | Whale Rock Capital Management LLC | 381,049 | 1.86 | $1,600,405 | 30-Sep-09 | | RENAISSANCE TECHNOLOGIES, LLC | 321,400 | 1.57 | $1,349,880 | 30-Sep-09 | | FULLER & THALER ASSET MANAGEMENT INC. | 256,474 | 1.25 | $1,077,190 | 30-Sep-09 | | STEADFAST ADVISORS LLC | 207,713 | 1.02 | $872,394 | 30-Sep-09 | | OHIO-STATE TEACHERS RETIREMENT SYSTEM | 115,100 | .56 | $483,420 | 30-Sep-09 | | MUNDER CAPITAL MANAGEMENT, INC. | 97,000 | .47 | $407,400 | 30-Sep-09 |
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| Holder | Shares | % Out | Value* | Reported | | DFA U.S. MICRO CAP SERIES | 117,880 | .58 | $338,315 | 30-Apr-09 | | VANGUARD EXTENDED MARKET INDEX FUND | 75,382 | .37 | $202,023 | 30-Jun-09 | | DFA Tax Managed U.S. Targeted Value Port | 60,199 | .29 | $188,422 | 31-Jul-09 | | DFA U.S. SMALL CAP SERIES | 55,111 | .27 | $158,168 | 30-Apr-09 | | ISHARES Russell Micro Cap (TM) Index Fund | 38,873 | .19 | $163,266 | 30-Sep-09 | | DFA TAX-MANAGED U.S. SMALL CAP PORTFOLIO | 36,037 | .18 | $112,795 | 31-Jul-09 | | DFA U.S. Targeted Value Portfolio | 29,150 | .14 | $83,660 | 30-Apr-09 | | ROYCE MICRO CAP TRUST | 25,000 | .12 | $67,000 | 30-Jun-09 | | DFA U.S. Vector Equity Portfolio | 17,056 | .08 | $48,950 | 30-Apr-09 | | DFA U.S. Core Equity 2 Portfolio | 16,536 | .08 | $47,458 | 30-Apr-09 |
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Value shown is computed using the security's price on the report date given.
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