| TOP INSTITUTIONAL HOLDERS |
| Holder | Shares | % Out | Value* | Reported | | Axial Capital Management LLC | 4,670,749 | 8.55 | $17,281,771 | 30-Sep-09 | | RENAISSANCE TECHNOLOGIES, LLC | 4,411,117 | 8.07 | $16,321,132 | 30-Sep-09 | | Black Horse Capital Management LLC | 2,697,941 | 4.94 | $9,982,381 | 30-Sep-09 | | Roark, Rearden & Hamot Capital Management, LLC | 2,303,474 | 4.22 | $8,522,853 | 30-Sep-09 | | BRANDES INVESTMENT PARTNERS L.P. | 1,576,265 | 2.89 | $5,832,180 | 30-Sep-09 | | GRANAHAN INVESTMENT MANAGEMENT INC. | 1,315,348 | 2.41 | $4,866,787 | 30-Sep-09 | | CONNOR CLARK & LUNN INVESTMENT MANAGEMENT LTD | 946,300 | 1.73 | $3,501,310 | 30-Sep-09 | | SHAW D.E. & CO., INC. | 819,566 | 1.50 | $3,032,394 | 30-Sep-09 | | Barclays Global Investors UK Holdings Ltd | 770,001 | 1.41 | $2,849,003 | 30-Sep-09 | | ACADIAN ASSET MANAGEMENT | 738,100 | 1.35 | $2,730,970 | 30-Sep-09 |
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| Holder | Shares | % Out | Value* | Reported | | VANGUARD VARIABLE INSURANCE FUND-SMALL COMPANY GROWTH | 1,447,138 | 2.65 | $3,067,932 | 30-Jun-09 | | DFA INTERNATIONAL SMALL CAP VALUE PORTFOLIO | 950,900 | 1.74 | $1,920,818 | 30-Apr-09 | | ISHARES NASDAQ BIOTECHNOLOGY INDEX FUND | 521,933 | .96 | $1,821,546 | 31-Oct-09 | | DFA Investment Dimensions-Canadian Small Company Series | 212,100 | .39 | $731,745 | 31-Jul-09 | | DFA International Core Equity Portfolio | 89,400 | .16 | $180,588 | 30-Apr-09 | | Catalyst Value Fund | 81,268 | .15 | $172,288 | 30-Jun-09 | | Allegiant Multi-Factor Small Cap Growth Fd | 60,400 | .11 | $257,908 | 31-Aug-09 | | Powershares Exgh Traded Fd Tr-Powershares Zacks Micro Cap Po | 53,301 | .10 | $183,888 | 31-Jul-09 | | AMERICAN CENTURY SMALL COMPANY FUND | 43,448 | .08 | $160,757 | 30-Sep-09 | | Metropolitan Ser Fd-Met/Dimensional International Small Comp | 26,200 | .05 | $46,374 | 31-Mar-09 |
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Value shown is computed using the security's price on the report date given.
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