| TOP INSTITUTIONAL HOLDERS |
| Holder | Shares | % Out | Value* | Reported | | ESSEX INVESTMENT MANAGEMENT CO INC | 1,847,407 | 6.85 | $22,168,884 | 30-Sep-09 | | ARDSLEY ADVISORY PARTNERS | 1,050,000 | 3.89 | $12,600,000 | 30-Sep-09 | | GLOBEFLEX CAPITAL, L.P. | 560,524 | 2.08 | $6,726,288 | 30-Sep-09 | | Barclays Global Investors UK Holdings Ltd | 490,463 | 1.82 | $5,885,556 | 30-Sep-09 | | OBERWEIS ASSET MANAGEMENT INC. | 485,714 | 1.80 | $5,828,568 | 30-Sep-09 | | Forward Uniplan Advisors, Inc. | 410,000 | 1.52 | $4,920,000 | 30-Sep-09 | | SHAW D.E. & CO., INC. | 303,968 | 1.13 | $3,647,616 | 30-Sep-09 | | VANGUARD GROUP, INC. (THE) | 256,415 | .95 | $3,076,980 | 30-Sep-09 | | STATE STREET CORPORATION | 226,610 | .84 | $2,719,320 | 30-Sep-09 | | Allianz Global Investors of America L.P. | 223,210 | .83 | $2,678,520 | 30-Sep-09 |
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| Holder | Shares | % Out | Value* | Reported | | Managers AMG Funds-Essex Small/Micro Cap Growth Fund | 429,337 | 1.59 | $3,799,632 | 31-Aug-09 | | Oberweis China Opportunities Fund | 309,483 | 1.15 | $3,135,062 | 30-Jun-09 | | HEARTLAND VALUE FUND | 250,000 | .93 | $2,532,500 | 30-Jun-09 | | ISHARES RUSSELL 2000 INDEX FD | 216,653 | .80 | $2,599,836 | 30-Sep-09 | | VANGUARD EXPLORER FUND, INC. | 216,644 | .80 | $2,432,912 | 31-Jul-09 | | GE INSTITUTIONAL SMALL-CAP EQUITY FUND | 135,307 | .50 | $1,519,497 | 31-Jul-09 | | BRIDGEWAY FDS INC-ULTRA SMALL COMPANY FD | 130,000 | .48 | $1,316,900 | 30-Jun-09 | | ISHARES RUSSELL 2000 GROWTH INDEX FD | 113,350 | .42 | $1,360,200 | 30-Sep-09 | | Principal Small Cap Growth Fd II | 91,444 | .34 | $926,327 | 30-Jun-09 | | Powershares Exhg Traded Fd-Powershares Golden Dragon Halter | 80,169 | .30 | $900,297 | 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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