| TOP INSTITUTIONAL HOLDERS |
| Holder | Shares | % Out | Value* | Reported | | MARXE, AUSTIN W. & GREENHOUSE, DAVID M. | 6,475,966 | 9.77 | $31,084,636 | 30-Sep-09 | | Barclays Global Investors UK Holdings Ltd | 4,701,120 | 7.09 | $22,565,376 | 30-Sep-09 | | VANGUARD GROUP, INC. (THE) | 3,446,662 | 5.20 | $16,543,977 | 30-Sep-09 | | ARNHOLD & S. BLEICHRODER ADVISERS INC. | 3,203,058 | 4.83 | $15,374,678 | 30-Sep-09 | | DIMENSIONAL FUND ADVISORS LP | 3,138,902 | 4.74 | $15,066,729 | 30-Sep-09 | | WENTWORTH, HAUSER AND VIOLICH | 2,845,000 | 4.29 | $13,656,000 | 30-Sep-09 | | ESSEX INVESTMENT MANAGEMENT CO INC | 1,703,678 | 2.57 | $8,177,654 | 30-Sep-09 | | TOCQUEVILLE ASSET MANAGEMENT, L.P. | 1,699,275 | 2.56 | $8,156,520 | 30-Sep-09 | | STATE STREET CORPORATION | 1,397,797 | 2.11 | $6,709,425 | 30-Sep-09 | | FRIESS ASSOCIATES INC | 976,300 | 1.47 | $4,686,240 | 30-Sep-09 |
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| Holder | Shares | % Out | Value* | Reported | | ISHARES RUSSELL 2000 INDEX FD | 992,126 | 1.50 | $4,762,204 | 30-Sep-09 | | ISHARES S&P SMALLCAP 600 INDEX FD | 861,944 | 1.30 | $3,827,031 | 31-Oct-09 | | VANGUARD SMALL-CAP INDEX FUND | 814,696 | 1.23 | $3,006,228 | 30-Jun-09 | | DFA U.S. MICRO CAP SERIES | 672,020 | 1.01 | $1,848,055 | 30-Apr-09 | | VANGUARD TOTAL STOCK MARKET INDEX FUND | 614,178 | .93 | $2,266,316 | 30-Jun-09 | | Schwab Capital Trust-Laudus Small Cap Market Masters Fund | 561,400 | .85 | $2,228,758 | 31-Jul-09 | | ISHARES RUSSELL 2000 GROWTH INDEX FD | 519,416 | .78 | $2,493,196 | 30-Sep-09 | | VANGUARD SMALL-CAP GROWTH INDEX FUND | 516,403 | .78 | $1,905,527 | 30-Jun-09 | | COLLEGE RETIREMENT EQUITIES FUND-STOCK ACCOUNT | 408,764 | .62 | $1,508,339 | 30-Jun-09 | | VANGUARD EXTENDED MARKET INDEX FUND | 407,534 | .62 | $1,503,800 | 30-Jun-09 |
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*
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Value shown is computed using the security's price on the report date given.
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