| TOP INSTITUTIONAL HOLDERS |
| Holder | Shares | % Out | Value* | Reported | | ST. DENIS J. VILLERE & COMPANY | 3,430,904 | 8.21 | $58,325,368 | 30-Sep-09 | | Barclays Global Investors UK Holdings Ltd | 2,422,820 | 5.80 | $41,187,940 | 30-Sep-09 | | COLUMBIA WANGER ASSET MANAGEMENT, L.P. | 2,205,000 | 5.28 | $37,485,000 | 30-Sep-09 | | VANGUARD GROUP, INC. (THE) | 1,568,207 | 3.75 | $26,659,519 | 30-Sep-09 | | PRIMECAP MANAGEMENT COMPANY | 1,201,419 | 2.87 | $20,424,123 | 30-Sep-09 | | OPPENHEIMER FUNDS, INC. | 1,201,100 | 2.87 | $20,418,700 | 30-Sep-09 | | WELLS FARGO & COMPANY | 1,178,174 | 2.82 | $20,028,958 | 30-Sep-09 | | IRONBRIDGE CAPITAL MANAGEMENT, L.P. | 971,602 | 2.32 | $16,517,234 | 30-Sep-09 | | Pictet Asset Management Ltd | 956,492 | 2.29 | $16,260,364 | 30-Sep-09 | | SECTORAL ASSET MANAGEMENT, INC. | 4,407,165 | 10.54 | $74,921,805 | 30-Sep-09 |
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| Holder | Shares | % Out | Value* | Reported | | COLUMBIA ACORN FD | 2,453,000 | 5.87 | $45,478,620 | 30-Jun-09 | | OPPENHEIMER GLOBAL OPPORTUNITIES FUND | 1,200,000 | 2.87 | $22,248,000 | 30-Jun-09 | | VANGUARD EXPLORER FUND, INC. | 717,600 | 1.72 | $12,679,992 | 31-Jul-09 | | ISHARES RUSSELL 2000 INDEX FD | 608,747 | 1.46 | $10,348,699 | 30-Sep-09 | | VANGUARD SMALL-CAP INDEX FUND | 480,023 | 1.15 | $8,899,626 | 30-Jun-09 | | ISHARES NASDAQ BIOTECHNOLOGY INDEX FUND | 368,172 | .88 | $5,419,491 | 31-Oct-09 | | VANGUARD TOTAL STOCK MARKET INDEX FUND | 367,618 | .88 | $6,815,637 | 30-Jun-09 | | COLUMBIA ACORN USA FD | 350,000 | .84 | $6,489,000 | 30-Jun-09 | | Wanger Advisor Trust-Wanger USA, Variable Series | 350,000 | .84 | $6,489,000 | 30-Jun-09 | | ISHARES RUSSELL 2000 GROWTH INDEX FD | 318,516 | .76 | $5,414,772 | 30-Sep-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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