| TOP INSTITUTIONAL HOLDERS |
| Holder | Shares | % Out | Value* | Reported | | KNOTT (DAVID M.) | 5,065,853 | 9.98 | $18,186,412 | 30-Sep-09 | | Barclays Global Investors UK Holdings Ltd | 3,662,832 | 7.22 | $13,149,566 | 30-Sep-09 | | DellaCamera Capital Management, LLC | 3,244,227 | 6.39 | $11,646,774 | 30-Sep-09 | | RENAISSANCE TECHNOLOGIES, LLC | 2,865,404 | 5.64 | $10,286,800 | 30-Sep-09 | | VANGUARD GROUP, INC. (THE) | 2,300,452 | 4.53 | $8,258,622 | 30-Sep-09 | | DIMENSIONAL FUND ADVISORS LP | 1,728,173 | 3.40 | $6,204,141 | 30-Sep-09 | | GOLDMAN SACHS GROUP INC | 1,098,115 | 2.16 | $3,942,232 | 30-Sep-09 | | STATE STREET CORPORATION | 1,035,003 | 2.04 | $3,715,660 | 30-Sep-09 | | Third Point LLC | 6,890,000 | 13.57 | $24,735,100 | 30-Sep-09 | | NORTHERN TRUST CORPORATION | 606,948 | 1.20 | $1,474,883 | 30-Jun-09 |
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| Holder | Shares | % Out | Value* | Reported | | ISHARES RUSSELL 2000 INDEX FD | 753,013 | 1.48 | $2,703,316 | 30-Sep-09 | | VANGUARD TOTAL STOCK MARKET INDEX FUND | 653,863 | 1.29 | $1,588,887 | 30-Jun-09 | | ISHARES NASDAQ BIOTECHNOLOGY INDEX FUND | 648,208 | 1.28 | $2,106,676 | 31-Oct-09 | | VANGUARD SMALL-CAP INDEX FUND | 638,111 | 1.26 | $1,550,609 | 30-Jun-09 | | Goldman Sachs Structured Small Cap Equity Fund | 518,449 | 1.02 | $1,332,413 | 31-Jul-09 | | DFA U.S. MICRO CAP SERIES | 482,904 | .95 | $1,661,189 | 30-Apr-09 | | VANGUARD EXTENDED MARKET INDEX FUND | 406,658 | .80 | $988,178 | 30-Jun-09 | | ISHARES RUSSELL 2000 GROWTH INDEX FD | 288,756 | .57 | $1,036,634 | 30-Sep-09 | | COLLEGE RETIREMENT EQUITIES FUND-STOCK ACCOUNT | 286,946 | .57 | $697,278 | 30-Jun-09 | | VANGUARD SMALL-CAP GROWTH INDEX FUND | 259,213 | .51 | $629,887 | 30-Jun-09 |
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Value shown is computed using the security's price on the report date given.
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