| TOP INSTITUTIONAL HOLDERS |
| Holder | Shares | % Out | Value* | Reported | | WADDELL & REED FINANCIAL INC. | 2,816,465 | 5.18 | $44,556,476 | 30-Sep-09 | | JANUS CAPITAL MANAGEMENT, LLC | 2,667,902 | 4.91 | $42,206,209 | 30-Sep-09 | | PRICE (T.ROWE) ASSOCIATES INC | 1,872,297 | 3.44 | $29,619,738 | 30-Sep-09 | | Barclays Global Investors UK Holdings Ltd | 1,859,048 | 3.42 | $29,410,139 | 30-Sep-09 | | Ameriprise Financial, Inc. | 1,601,669 | 2.95 | $25,338,403 | 30-Sep-09 | | WENTWORTH, HAUSER AND VIOLICH | 1,598,555 | 2.94 | $25,289,140 | 30-Sep-09 | | VANGUARD GROUP, INC. (THE) | 1,447,282 | 2.66 | $22,896,001 | 30-Sep-09 | | JENNISON ASSOCIATES LLC | 1,270,528 | 2.34 | $20,099,752 | 30-Sep-09 | | FRONTIER CAPITAL MANAGEMENT COMPANY INC | 1,206,661 | 2.22 | $19,089,377 | 30-Sep-09 | | PENN Capital Management Co., Inc. | 1,032,336 | 1.90 | $16,331,555 | 30-Sep-09 |
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| Holder | Shares | % Out | Value* | Reported | | WADDELL & REED ADVISORS FDS-SCIENCE & TECHNOLOGY FUND | 1,599,000 | 2.94 | $18,324,540 | 30-Jun-09 | | PRICE (T.ROWE) NEW HORIZONS FUND | 1,263,400 | 2.32 | $19,986,988 | 30-Sep-09 | | JANUS ENTERPRISE FUND | 1,175,494 | 2.16 | $18,596,315 | 30-Sep-09 | | FIDELITY OTC PORTFOLIO | 899,300 | 1.65 | $14,226,926 | 30-Sep-09 | | SELIGMAN CAPITAL FUND INC | 816,368 | 1.50 | $9,355,577 | 30-Jun-09 | | JENNISON SMALL COMPANY FUND | 620,280 | 1.14 | $9,812,829 | 30-Sep-09 | | ISHARES RUSSELL 2000 INDEX FD | 531,171 | .98 | $8,403,125 | 30-Sep-09 | | JANUS VENTURE FUND | 515,205 | .95 | $8,150,543 | 30-Sep-09 | | VANGUARD SMALL-CAP INDEX FUND | 457,139 | .84 | $5,238,812 | 30-Jun-09 | | IVY SCIENCE & TECHNOLOGY FUND | 442,500 | .81 | $5,071,050 | 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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