| TOP INSTITUTIONAL HOLDERS |
| Holder | Shares | % Out | Value* | Reported | | FMR LLC | 2,311,355 | 8.05 | $66,983,067 | 30-Sep-09 | | WADDELL & REED FINANCIAL INC. | 3,673,560 | 12.80 | $106,459,768 | 30-Sep-09 | | ASHFORD CAPITAL MANAGEMENT INC. | 486,543 | 1.70 | $14,100,016 | 30-Sep-09 | | NATCAN INVESTMENT MANAGEMENT, INC. | 482,441 | 1.68 | $13,981,140 | 30-Sep-09 | | RIVERBRIDGE PARTNERS LLC | 384,746 | 1.34 | $11,149,939 | 30-Sep-09 | | PIER CAPITAL, LLC | 377,853 | 1.32 | $10,950,179 | 30-Sep-09 | | ARDSLEY ADVISORY PARTNERS | 347,000 | 1.21 | $10,056,060 | 30-Sep-09 | | Winslow Management Company | 276,081 | .96 | $8,000,827 | 30-Sep-09 | | MFC Global Investment Management (U.S.), LLC | 190,103 | .66 | $5,509,184 | 30-Sep-09 | | ALYDAR PARTNERS, LLC | 187,220 | .65 | $5,425,635 | 30-Sep-09 |
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| Holder | Shares | % Out | Value* | Reported | | WADDELL & REED ADVISORS FDS-SCIENCE & TECHNOLOGY FUND | 2,365,480 | 8.24 | $51,259,951 | 30-Jun-09 | | FIDELITY MID-CAP STOCK FUND | 1,800,000 | 6.27 | $52,164,000 | 30-Sep-09 | | IVY SCIENCE & TECHNOLOGY FUND | 984,594 | 3.43 | $21,336,151 | 30-Jun-09 | | Professionally Managed Portf-Winslow Green Growth Fund | 614,906 | 2.14 | $17,819,975 | 30-Sep-09 | | FIDELITY ADVISOR SMALL CAP FUND | 502,355 | 1.75 | $13,563,585 | 31-Aug-09 | | Ivy Fds VIP-Science & Technology Port | 320,971 | 1.12 | $6,955,441 | 30-Jun-09 | | JOHN HANCOCK SMALL CAP EQUITY FUND | 226,527 | .79 | $6,512,651 | 31-Oct-09 | | HEARTLAND VALUE FUND | 146,938 | .51 | $3,184,146 | 30-Jun-09 | | MARSHALL SMALL-CAP GROWTH FUND | 136,300 | .47 | $3,918,625 | 31-Oct-09 | | MARSHALL MID-CAP GROWTH FUND | 112,800 | .39 | $3,243,000 | 31-Oct-09 |
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Value shown is computed using the security's price on the report date given.
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