| TOP INSTITUTIONAL HOLDERS |
| Holder | Shares | % Out | Value* | Reported | | DIMENSIONAL FUND ADVISORS LP | 540,691 | 3.73 | $643,422 | 30-Sep-09 | | RENAISSANCE TECHNOLOGIES, LLC | 508,100 | 3.51 | $604,639 | 30-Sep-09 | | ROYCE & ASSOCIATES, LLC | 445,500 | 3.08 | $530,145 | 30-Sep-09 | | PERKINS CAPITAL MANAGEMENT, INC. | 2,777,404 | 19.17 | $3,305,110 | 30-Sep-09 | | VANGUARD GROUP, INC. (THE) | 212,418 | 1.47 | $252,777 | 30-Sep-09 | | Nottingham Advisors Inc. | 197,158 | 1.36 | $234,618 | 30-Sep-09 | | Barclays Global Investors UK Holdings Ltd | 185,173 | 1.28 | $220,355 | 30-Sep-09 | | CALPERS (CALIFORNIA-PUBLIC EMPLOYEES RETIREMENT SYSTEM) | 81,700 | .56 | $101,308 | 30-Jun-09 | | NORTHERN TRUST CORPORATION | 43,944 | .30 | $54,490 | 30-Jun-09 | | Investors Capital Advisory Services | 21,625 | .15 | $25,733 | 30-Sep-09 |
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| Holder | Shares | % Out | Value* | Reported | | ROYCE VALUE TRUST, INC. | 445,500 | 3.08 | $552,420 | 30-Jun-09 | | VANGUARD EXTENDED MARKET INDEX FUND | 212,418 | 1.47 | $263,398 | 30-Jun-09 | | DFA U.S. SMALL CAP SERIES | 131,715 | .91 | $111,957 | 30-Apr-09 | | DFA U.S. MICRO CAP SERIES | 123,100 | .85 | $104,635 | 30-Apr-09 | | DFA U.S. SMALL CAP VALUE SERIES | 28,876 | .20 | $24,544 | 30-Apr-09 | | Principal Small Cap Value Fd II | 7,700 | .05 | $9,548 | 30-Jun-09 | | SPARTAN EXTENDED MARKET INDEX FUND | 5,053 | .03 | $6,013 | 30-Sep-09 | | DFA Investment Dimensions-DFA VA U.S. Targeted Value Portfol | 4,900 | .03 | $6,321 | 31-Jul-09 | | DFA U.S. Core Equity 2 Portfolio | 4,079 | .03 | $3,467 | 30-Apr-09 | | SPARTAN TOTAL MARKET INDEX FUND | 3,800 | .03 | $4,522 | 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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