| TOP INSTITUTIONAL HOLDERS |
| Holder | Shares | % Out | Value* | Reported | | ZESIGER CAPITAL GROUP LLC | 6,495,770 | 7.49 | $17,343,705 | 30-Sep-09 | | Barclays Global Investors UK Holdings Ltd | 4,900,112 | 5.65 | $13,083,299 | 30-Sep-09 | | ZAZOVE ASSOCIATES LLC | 4,022,489 | 4.64 | $10,740,045 | 30-Sep-09 | | CONUS PARTNERS INC | 3,749,303 | 4.32 | $10,010,639 | 30-Sep-09 | | GAGNON SECURITIES, LLC | 3,511,591 | 4.05 | $9,375,947 | 30-Sep-09 | | Allianz Global Investors of America L.P. | 3,272,389 | 3.77 | $8,737,278 | 30-Sep-09 | | VANGUARD GROUP, INC. (THE) | 2,983,512 | 3.44 | $7,965,977 | 30-Sep-09 | | KINGDON CAPITAL MANAGEMENT LLC | 2,900,000 | 3.34 | $7,743,000 | 30-Sep-09 | | GRANAHAN INVESTMENT MANAGEMENT INC. | 2,452,380 | 2.83 | $6,547,854 | 30-Sep-09 | | Ironwood Investment Management, LLC | 1,972,982 | 2.27 | $5,267,861 | 30-Sep-09 |
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| Holder | Shares | % Out | Value* | Reported | | VANGUARD EXPLORER FUND, INC. | 1,583,700 | 1.83 | $3,642,510 | 31-Jul-09 | | ISHARES RUSSELL 2000 INDEX FD | 1,201,745 | 1.39 | $3,208,659 | 30-Sep-09 | | Allianz Fds-OCC Opportunity Fd | 1,030,119 | 1.19 | $2,513,490 | 31-Aug-09 | | VANGUARD SMALL-CAP INDEX FUND | 901,280 | 1.04 | $2,145,046 | 30-Jun-09 | | VANGUARD VARIABLE INSURANCE FUND-SMALL COMPANY GROWTH | 845,950 | .98 | $2,013,361 | 30-Jun-09 | | ISHARES NASDAQ BIOTECHNOLOGY INDEX FUND | 717,537 | .83 | $1,514,003 | 31-Oct-09 | | VANGUARD TOTAL STOCK MARKET INDEX FUND | 663,169 | .76 | $1,578,342 | 30-Jun-09 | | BRUCE FUND INC | 631,746 | .73 | $1,686,761 | 30-Sep-09 | | ISHARES RUSSELL 2000 GROWTH INDEX FD | 623,476 | .72 | $1,664,680 | 30-Sep-09 | | DFA U.S. MICRO CAP SERIES | 617,647 | .71 | $1,507,058 | 30-Apr-09 |
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*
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Value shown is computed using the security's price on the report date given.
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