| TOP INSTITUTIONAL HOLDERS |
| Holder | Shares | % Out | Value* | Reported | | ORBIMED ADVISORS LLC. | 3,415,211 | 5.13 | $7,991,593 | 30-Sep-09 | | Barclays Global Investors UK Holdings Ltd | 2,556,311 | 3.84 | $5,981,767 | 30-Sep-09 | | RENAISSANCE TECHNOLOGIES, LLC | 1,955,132 | 2.94 | $4,575,008 | 30-Sep-09 | | ARNHOLD & S. BLEICHRODER ADVISERS INC. | 12,932,069 | 19.43 | $30,261,041 | 30-Sep-09 | | VANGUARD GROUP, INC. (THE) | 1,237,509 | 1.86 | $2,895,771 | 30-Sep-09 | | FRANKLIN RESOURCES, INC | 1,231,300 | 1.85 | $2,881,242 | 30-Sep-09 | | Sonar Capital Management, LLC | 1,102,306 | 1.66 | $2,579,396 | 30-Sep-09 | | STATE STREET CORPORATION | 972,740 | 1.46 | $2,276,211 | 30-Sep-09 | | DIMENSIONAL FUND ADVISORS LP | 843,937 | 1.27 | $1,974,812 | 30-Sep-09 | | HARRIS (WILLIAM) INVESTORS, INC. | 600,000 | .90 | $1,404,000 | 30-Sep-09 |
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| Holder | Shares | % Out | Value* | Reported | | FRANKLIN STRATEGIC SERIES-FRANKLIN BIOTECHNOLOGY DISCOVE | 967,900 | 1.45 | $2,264,886 | 30-Sep-09 | | ISHARES RUSSELL 2000 INDEX FD | 936,204 | 1.41 | $2,190,717 | 30-Sep-09 | | VANGUARD EXTENDED MARKET INDEX FUND | 650,967 | .98 | $1,041,547 | 30-Jun-09 | | DFA U.S. SMALL CAP VALUE SERIES | 521,721 | .78 | $610,413 | 30-Apr-09 | | ISHARES RUSSELL 2000 GROWTH INDEX FD | 491,279 | .74 | $1,149,592 | 30-Sep-09 | | VANGUARD TOTAL STOCK MARKET INDEX FUND | 393,934 | .59 | $630,294 | 30-Jun-09 | | COLLEGE RETIREMENT EQUITIES FUND-STOCK ACCOUNT | 350,773 | .53 | $561,236 | 30-Jun-09 | | BRIDGEWAY FDS INC-ULTRA SMALL COMPANY MARKET FD | 219,100 | .33 | $350,560 | 30-Jun-09 | | ISHARES Russell Micro Cap (TM) Index Fund | 118,726 | .18 | $277,818 | 30-Sep-09 | | UBS EUCALYPTUS FUND LLC | 90,000 | .14 | $144,000 | 30-Jun-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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