| TOP INSTITUTIONAL HOLDERS |
| Holder | Shares | % Out | Value* | Reported | | FRANKLIN RESOURCES, INC | 1,524,915 | 2.42 | $1,860,396 | 30-Sep-09 | | ARNHOLD & S. BLEICHRODER ADVISERS INC. | 1,397,897 | 2.22 | $1,705,434 | 30-Sep-09 | | RENAISSANCE TECHNOLOGIES, LLC | 1,030,100 | 1.63 | $1,256,722 | 30-Sep-09 | | SHAW D.E. & CO., INC. | 421,700 | .67 | $514,474 | 30-Sep-09 | | NATCAN INVESTMENT MANAGEMENT, INC. | 207,500 | .33 | $253,150 | 30-Sep-09 | | WELLINGTON MANAGEMENT COMPANY, LLP | 130,700 | .21 | $159,454 | 30-Sep-09 | | KINETICS ASSET MANAGEMENT INC. | 102,500 | .16 | $125,050 | 30-Sep-09 | | Harris Financial Corp | 61,337 | .10 | $74,831 | 30-Sep-09 | | SPARK LP/DE | 57,900 | .09 | $70,638 | 30-Sep-09 | | Timber Hill LLC | 26,606 | .04 | $32,459 | 30-Sep-09 |
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| Holder | Shares | % Out | Value* | Reported | | FRANKLIN STRATEGIC SERIES-FRANKLIN BIOTECHNOLOGY DISCOVE | 1,182,925 | 1.87 | $1,443,168 | 30-Sep-09 | | DFA Investment Dimensions-Canadian Small Company Series | 124,800 | .20 | $326,976 | 31-Jul-09 | | KINETICS PORT TR-KINETICS MASTER MEDICAL PORT | 102,500 | .16 | $177,325 | 30-Jun-09 | | DFA International Core Equity Portfolio | 6,800 | .01 | $7,480 | 30-Apr-09 | | FIDELITY NASDAQ COMPOSITE INDEX TRACKING STOCK | 6,110 | .01 | $7,454 | 30-Sep-09 | | FIDELITY NASDAQ COMPOSITE INDEX FUND | 3,891 | .01 | $4,747 | 30-Sep-09 |
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Value shown is computed using the security's price on the report date given.
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