| TOP INSTITUTIONAL HOLDERS |
| Holder | Shares | % Out | Value* | Reported | | MANNING & NAPIER ADVISORS INC | 3,764,612 | 7.68 | $9,562,114 | 31-Dec-09 | | DIMENSIONAL FUND ADVISORS LP | 2,781,493 | 5.67 | $7,843,810 | 30-Sep-09 | | KOPP INVESTMENT ADVISORS. INC. | 2,592,131 | 5.29 | $7,309,809 | 30-Sep-09 | | MILLENNIUM MANAGEMENT LLC | 2,208,836 | 4.50 | $6,228,917 | 30-Sep-09 | | STEPHENS INVESTMENT MANAGEMENT LLC | 1,401,769 | 2.86 | $3,952,988 | 30-Sep-09 | | KENNEDY CAPITAL MANAGEMENT, INC. | 1,358,126 | 2.77 | $3,829,915 | 30-Sep-09 | | ROYCE & ASSOCIATES, LLC | 4,975,229 | 10.15 | $14,030,145 | 30-Sep-09 | | Barclays Global Investors UK Holdings Ltd | 786,497 | 1.60 | $2,217,921 | 30-Sep-09 | | WELLINGTON MANAGEMENT COMPANY, LLP | 643,431 | 1.31 | $1,814,475 | 30-Sep-09 | | VANGUARD GROUP, INC. (THE) | 500,345 | 1.02 | $1,410,972 | 30-Sep-09 |
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| Holder | Shares | % Out | Value* | Reported | | ROYCE VALUE PLUS FUND | 2,965,500 | 6.05 | $5,248,935 | 30-Jun-09 | | Manning & Napier Maryland Life Sciences Series Fund | 2,578,423 | 5.26 | $7,271,152 | 30-Sep-09 | | ROYCE LOW-PRICED STOCK FUND | 1,657,429 | 3.38 | $4,673,949 | 30-Sep-09 | | DFA U.S. SMALL CAP SERIES | 591,722 | 1.21 | $1,000,010 | 31-Jul-09 | | DFA U.S. SMALL CAP VALUE SERIES | 502,116 | 1.02 | $848,576 | 31-Jul-09 | | DFA U.S. MICRO CAP SERIES | 463,931 | .95 | $784,043 | 31-Jul-09 | | ROYCE FOCUS TRUST, INC. | 352,300 | .72 | $993,486 | 30-Sep-09 | | VANGUARD EXTENDED MARKET INDEX FUND | 262,222 | .53 | $464,132 | 30-Jun-09 | | DFA Tax Managed U.S. Targeted Value Port | 213,467 | .44 | $360,759 | 31-Jul-09 | | Manning & Napier Pro Blend Maximum Term Series Fund | 184,520 | .38 | $311,838 | 31-Jul-09 |
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Value shown is computed using the security's price on the report date given.
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