| TOP INSTITUTIONAL HOLDERS |
| Holder | Shares | % Out | Value* | Reported | | Barclays Global Investors UK Holdings Ltd | 6,794,774 | 6.24 | $15,016,450 | 30-Sep-09 | | JENNISON ASSOCIATES LLC | 3,400,000 | 3.12 | $7,514,000 | 30-Sep-09 | | VANGUARD GROUP, INC. (THE) | 2,338,822 | 2.15 | $5,168,796 | 30-Sep-09 | | JP MORGAN CHASE & COMPANY | 2,301,957 | 2.11 | $5,087,324 | 30-Sep-09 | | STATE STREET CORPORATION | 1,935,485 | 1.78 | $4,277,421 | 30-Sep-09 | | DIMENSIONAL FUND ADVISORS LP | 1,575,284 | 1.45 | $3,481,377 | 30-Sep-09 | | MILLENNIUM MANAGEMENT LLC | 1,274,922 | 1.17 | $2,817,577 | 30-Sep-09 | | Clearbridge Advisors, LLC | 1,078,180 | .99 | $2,382,777 | 30-Sep-09 | | DekaBank Deutsche Girozentrale | 997,000 | .92 | $1,595,200 | 30-Jun-09 | | NORTHERN TRUST CORPORATION | 928,310 | .85 | $1,485,296 | 30-Jun-09 |
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| Holder | Shares | % Out | Value* | Reported | | JENNISON SECTOR FDS-JENNISON HEALTH SCIENCES FD | 2,517,600 | 2.31 | $5,513,544 | 31-Aug-09 | | ISHARES RUSSELL 2000 INDEX FD | 1,600,622 | 1.47 | $3,537,374 | 30-Sep-09 | | ISHARES NASDAQ BIOTECHNOLOGY INDEX FUND | 957,278 | .88 | $1,723,100 | 31-Oct-09 | | VANGUARD TOTAL STOCK MARKET INDEX FUND | 954,949 | .88 | $1,527,918 | 30-Jun-09 | | Legg Mason Partners Small Cap Growth Fd | 929,170 | .85 | $2,053,465 | 30-Sep-09 | | DFA U.S. SMALL CAP VALUE SERIES | 840,284 | .77 | $1,260,426 | 30-Apr-09 | | ISHARES RUSSELL 2000 GROWTH INDEX FD | 839,868 | .77 | $1,856,108 | 30-Sep-09 | | JP MORGAN SMALL CAP GROWTH FUND | 600,200 | .55 | $1,326,442 | 30-Sep-09 | | COLLEGE RETIREMENT EQUITIES FUND-STOCK ACCOUNT | 593,978 | .55 | $950,364 | 30-Jun-09 | | VANGUARD EXTENDED MARKET INDEX FUND | 545,971 | .50 | $873,553 | 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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