| TOP INSTITUTIONAL HOLDERS |
| Holder | Shares | % Out | Value* | Reported | | FEDERATED INVESTORS, INC. | 2,682,436 | 5.70 | $26,421,994 | 30-Sep-09 | | Barclays Global Investors UK Holdings Ltd | 1,375,486 | 2.92 | $13,548,537 | 30-Sep-09 | | WASATCH ADVISORS INC | 1,053,700 | 2.24 | $10,378,945 | 30-Sep-09 | | VANGUARD GROUP, INC. (THE) | 942,641 | 2.00 | $9,285,013 | 30-Sep-09 | | FMR LLC | 6,865,036 | 14.59 | $67,620,604 | 30-Sep-09 | | ADAGE CAPITAL PARTNERS GP, L.L.C. | 838,901 | 1.78 | $8,263,174 | 30-Sep-09 | | PRINCIPAL FINANCIAL GROUP, INC. | 832,310 | 1.77 | $8,198,253 | 30-Sep-09 | | LEUTHOLD WEEDEN CAPITAL MANAGEMENT, LLC | 738,677 | 1.57 | $7,275,968 | 30-Sep-09 | | FRANKLIN RESOURCES, INC | 660,710 | 1.40 | $6,507,993 | 30-Sep-09 | | MORGAN STANLEY | 655,587 | 1.39 | $6,457,531 | 30-Sep-09 |
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| Holder | Shares | % Out | Value* | Reported | | FEDERATED KAUFMANN FUND | 2,459,000 | 5.23 | $20,114,620 | 31-Jul-09 | | FIDELITY SELECT PORTFOLIOS - BIOTECHNOLOGY | 1,243,748 | 2.64 | $12,250,917 | 30-Sep-09 | | JENNISON SECTOR FDS-JENNISON HEALTH SCIENCES FD | 801,700 | 1.70 | $6,349,464 | 31-Aug-09 | | FIDELITY CONTRAFUND INC | 574,700 | 1.22 | $5,660,795 | 30-Sep-09 | | FRANKLIN STRATEGIC SERIES-FRANKLIN BIOTECHNOLOGY DISCOVE | 524,154 | 1.11 | $5,162,916 | 30-Sep-09 | | FIDELITY VALUE FUND | 480,200 | 1.02 | $4,729,970 | 30-Sep-09 | | LEUTHOLD CORE INVESTMENT FUND | 432,810 | .92 | $4,263,178 | 30-Sep-09 | | ISHARES NASDAQ BIOTECHNOLOGY INDEX FUND | 410,557 | .87 | $2,652,198 | 31-Oct-09 | | ISHARES RUSSELL 2000 INDEX FD | 391,113 | .83 | $3,852,463 | 30-Sep-09 | | WASATCH SMALL CAP GROWTH FUND | 371,994 | .79 | $1,908,329 | 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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