| TOP INSTITUTIONAL HOLDERS |
| Holder | Shares | % Out | Value* | Reported | | RENAISSANCE TECHNOLOGIES, LLC | 10,751,844 | 8.98 | $84,724,530 | 30-Sep-09 | | Barclays Global Investors UK Holdings Ltd | 7,501,559 | 6.27 | $59,112,284 | 30-Sep-09 | | VANGUARD GROUP, INC. (THE) | 5,244,639 | 4.38 | $41,327,755 | 30-Sep-09 | | ACADIAN ASSET MANAGEMENT | 4,997,746 | 4.18 | $39,382,238 | 30-Sep-09 | | FMR LLC | 4,261,400 | 3.56 | $33,579,832 | 30-Sep-09 | | Bank of New York Mellon Corporation | 4,005,432 | 3.35 | $31,562,804 | 30-Sep-09 | | AQR CAPITAL MANAGEMENT, LLC | 4,001,584 | 3.34 | $31,532,481 | 30-Sep-09 | | THOMPSON, SIEGEL & WALMSLEY, INC. | 3,130,158 | 2.62 | $24,665,645 | 30-Sep-09 | | Vicis Capital, LLC | 2,813,338 | 2.35 | $22,169,103 | 30-Sep-09 | | IRIDIAN ASSET MANAGEMENT LLC | 12,714,419 | 10.62 | $100,189,621 | 30-Sep-09 |
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| Holder | Shares | % Out | Value* | Reported | | FIRST EAGLE FUND OF AMERICA, INC. | 3,080,930 | 2.57 | $25,386,863 | 31-Jul-09 | | VANGUARD EXPLORER FUND, INC. | 2,430,110 | 2.03 | $20,024,106 | 31-Jul-09 | | ISHARES RUSSELL 2000 INDEX FD | 1,756,044 | 1.47 | $13,837,626 | 30-Sep-09 | | VANGUARD SMALL-CAP INDEX FUND | 1,459,130 | 1.22 | $11,527,127 | 30-Jun-09 | | VANGUARD TOTAL STOCK MARKET INDEX FUND | 1,110,061 | .93 | $8,769,481 | 30-Jun-09 | | FIDELITY GROWTH & INCOME PORTFOLIO | 1,100,000 | .92 | $8,668,000 | 30-Sep-09 | | MIDCAP SPDR TRUST SERIES I | 1,072,327 | .90 | $9,983,364 | 30-Sep-08 | | ISHARES RUSSELL 2000 GROWTH INDEX FD | 921,766 | .77 | $7,263,516 | 30-Sep-09 | | Fidelity Small Cap Growth Fund | 810,000 | .68 | $6,674,400 | 31-Jul-09 | | ISHARES NASDAQ BIOTECHNOLOGY INDEX FUND | 781,462 | .65 | $6,572,095 | 31-Oct-09 |
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Value shown is computed using the security's price on the report date given.
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