| TOP INSTITUTIONAL HOLDERS |
| Holder | Shares | % Out | Value* | Reported | | DEERFIELD MANAGEMENT | 4,358,781 | 9.33 | $29,160,244 | 30-Sep-09 | | MASSACHUSETTS FINANCIAL SERVICES CO - OTHER | 2,583,167 | 5.53 | $17,281,387 | 30-Sep-09 | | Cortina Asset Management, LLC | 1,435,019 | 3.07 | $9,600,277 | 30-Sep-09 | | Credit Suisse | 7,201,842 | 15.42 | $48,180,322 | 30-Sep-09 | | Credit Suisse/ | 6,929,260 | 14.84 | $46,356,749 | 30-Sep-09 | | ORBIMED ADVISORS LLC. | 5,718,256 | 12.25 | $38,255,132 | 30-Sep-09 | | DIMENSIONAL FUND ADVISORS LP | 931,373 | 1.99 | $6,230,885 | 30-Sep-09 | | Adams Street Partners, LLC | 869,125 | 1.86 | $5,814,446 | 30-Sep-09 | | PALO ALTO INVESTORS, LLC | 812,856 | 1.74 | $5,438,006 | 30-Sep-09 | | Barclays Global Investors UK Holdings Ltd | 782,922 | 1.68 | $5,237,748 | 30-Sep-09 |
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| Holder | Shares | % Out | Value* | Reported | | MFS VARIABLE INSURANCE TRUST-MFS NEW DISCOVERY SERIES | 1,153,516 | 2.47 | $6,805,744 | 30-Jun-09 | | MFS NEW DISCOVERY FUND | 862,981 | 1.85 | $5,333,222 | 31-Aug-09 | | DWS Global Opportunities Fd | 434,600 | .93 | $1,508,062 | 31-May-09 | | VANGUARD TOTAL STOCK MARKET INDEX FUND | 405,250 | .87 | $2,390,975 | 30-Jun-09 | | MFS Var Ins Tr II-MFS New Discovery Port | 383,630 | .82 | $2,263,417 | 30-Jun-09 | | DFA U.S. MICRO CAP SERIES | 336,545 | .72 | $753,860 | 30-Apr-09 | | ISHARES RUSSELL 2000 INDEX FD | 335,403 | .72 | $2,243,846 | 30-Sep-09 | | ISHARES RUSSELL 2000 GROWTH INDEX FD | 172,913 | .37 | $1,156,787 | 30-Sep-09 | | MFS CORE EQUITY FUND | 157,410 | .34 | $972,793 | 31-Aug-09 | | DWS Var Ser I-DWS Global Opportunities VIP | 157,000 | .34 | $926,300 | 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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