| TOP INSTITUTIONAL HOLDERS |
| Holder | Shares | % Out | Value* | Reported | | FMR LLC | 1,000,100 | 3.25 | $16,881,688 | 30-Sep-09 | | JANUS CAPITAL MANAGEMENT, LLC | 981,735 | 3.19 | $16,571,686 | 30-Sep-09 | | FIRST WILSHIRE SECURITIES MANAGEMENT INC | 938,569 | 3.05 | $15,843,044 | 30-Sep-09 | | Argyll Research, LLC | 800,000 | 2.60 | $13,504,000 | 30-Sep-09 | | CITADEL LIMITED PARTNERSHIP | 732,966 | 2.38 | $12,372,466 | 30-Sep-09 | | LORD ABBETT & CO | 605,723 | 1.97 | $10,224,604 | 30-Sep-09 | | ARDSLEY ADVISORY PARTNERS | 565,000 | 1.83 | $9,537,200 | 30-Sep-09 | | BLAIR (WILLIAM) & COMPANY, L.L.C. | 530,620 | 1.72 | $8,956,865 | 30-Sep-09 | | OPPENHEIMER FUNDS, INC. | 522,246 | 1.70 | $8,815,512 | 30-Sep-09 | | Barclays Global Investors UK Holdings Ltd | 500,503 | 1.62 | $8,448,490 | 30-Sep-09 |
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| Holder | Shares | % Out | Value* | Reported | | BLAIR (WILLIAM) MUTUAL FUNDS, INC.-SMALL CAP GROWTH FUND | 463,352 | 1.50 | $7,821,381 | 30-Sep-09 | | JANUS VENTURE FUND | 353,780 | 1.15 | $5,971,806 | 30-Sep-09 | | ISHARES RUSSELL 2000 INDEX FD | 221,638 | .72 | $3,741,249 | 30-Sep-09 | | Columbia Fds Ser Tr I-Columbia Greater China Fd | 165,989 | .54 | $2,059,923 | 31-Aug-09 | | Neuberger & Berman Small Cap Growth Fund | 163,400 | .53 | $2,758,192 | 30-Sep-09 | | Professionally Managed Portf-TCM Small Cap Growth Fund | 155,460 | .50 | $2,624,164 | 30-Sep-09 | | ISHARES RUSSELL 2000 GROWTH INDEX FD | 116,512 | .38 | $1,966,722 | 30-Sep-09 | | CONSULTING GROUP CAPITAL MARKETS-SMALL CAP GROWTH INV | 113,000 | .37 | $1,402,330 | 31-Aug-09 | | Advisors Inner Circle Fd II-Perimeter Small Cap Growth Fund | 78,160 | .25 | $1,236,491 | 31-Jul-09 | | SATUIT CAPITAL MICRO CAP FUND | 65,980 | .21 | $1,043,803 | 31-Jul-09 |
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Value shown is computed using the security's price on the report date given.
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