| TOP INSTITUTIONAL HOLDERS |
| Holder | Shares | % Out | Value* | Reported | | Matrix VII Management Co., L.L. C. | 7,479,455 | 8.49 | $19,072,610 | 31-Dec-08 | | Empire Capital Management, LLC | 7,080,000 | 8.03 | $62,587,200 | 30-Sep-09 | | Barclays Global Investors UK Holdings Ltd | 2,834,790 | 3.22 | $25,059,543 | 30-Sep-09 | | AXA | 2,596,026 | 2.95 | $22,948,869 | 30-Sep-09 | | VANGUARD GROUP, INC. (THE) | 2,590,588 | 2.94 | $22,900,797 | 30-Sep-09 | | SC X Management, LLC | 13,216,047 | 15.00 | $116,829,855 | 30-Sep-09 | | LORD ABBETT & CO | 1,744,069 | 1.98 | $15,417,569 | 30-Sep-09 | | Firelake Capital Management, LLC | 1,500,000 | 1.70 | $3,825,000 | 31-Dec-08 | | Cadence Capital Management | 1,373,430 | 1.56 | $12,141,121 | 30-Sep-09 | | Symmetry Peak Management LLC | 1,182,224 | 1.34 | $10,450,860 | 30-Sep-09 |
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| Holder | Shares | % Out | Value* | Reported | | LORD ABBETT DEVELOPING GROWTH FUND | 1,671,925 | 1.90 | $14,846,694 | 31-Jul-09 | | ISHARES RUSSELL 2000 INDEX FD | 865,283 | .98 | $7,649,101 | 30-Sep-09 | | VANGUARD SMALL-CAP INDEX FUND | 718,185 | .81 | $6,276,936 | 30-Jun-09 | | FIDELITY CONTRAFUND INC | 681,200 | .77 | $6,021,808 | 30-Sep-09 | | VAN KAMPEN SMALL CAP GROWTH FUND | 634,000 | .72 | $5,541,160 | 30-Jun-09 | | Columbia Fds Ser Tr I-Columbia Small Cap Growth Fd | 528,400 | .60 | $4,813,724 | 31-Aug-09 | | VANGUARD SMALL-CAP GROWTH INDEX FUND | 455,268 | .52 | $3,979,042 | 30-Jun-09 | | ISHARES RUSSELL 2000 GROWTH INDEX FD | 452,893 | .51 | $4,003,574 | 30-Sep-09 | | VANGUARD TOTAL STOCK MARKET INDEX FUND | 434,960 | .49 | $3,801,550 | 30-Jun-09 | | ALLIANCE BERNSTEIN SMALL CAP GROWTH FUND | 406,900 | .46 | $3,613,272 | 31-Jul-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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