| TOP INSTITUTIONAL HOLDERS |
| Holder | Shares | % Out | Value* | Reported | | NORTHPOINTE CAPITAL LLC | 4,469,990 | 6.76 | $18,371,658 | 30-Sep-09 | | Barclays Global Investors UK Holdings Ltd | 1,546,417 | 2.34 | $6,355,773 | 30-Sep-09 | | DIMENSIONAL FUND ADVISORS LP | 1,129,670 | 1.71 | $4,642,943 | 30-Sep-09 | | RENAISSANCE TECHNOLOGIES, LLC | 922,100 | 1.39 | $3,789,831 | 30-Sep-09 | | Glenhill Advisors LLC | 747,500 | 1.13 | $3,072,225 | 30-Sep-09 | | ESSEX INVESTMENT MANAGEMENT CO INC | 746,744 | 1.13 | $3,069,117 | 30-Sep-09 | | Portolan Capital Management, LLC | 623,669 | .94 | $2,563,279 | 30-Sep-09 | | VANGUARD GROUP, INC. (THE) | 537,064 | .81 | $2,207,333 | 30-Sep-09 | | MARSHALL & ILSLEY CORPORATION | 532,609 | .81 | $2,189,022 | 30-Sep-09 | | IRIDIAN ASSET MANAGEMENT LLC | 443,500 | .67 | $1,822,785 | 30-Sep-09 |
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| Holder | Shares | % Out | Value* | Reported | | MARSHALL SMALL-CAP GROWTH FUND | 1,656,500 | 2.50 | $5,052,325 | 30-Nov-09 | | ISHARES RUSSELL 2000 INDEX FD | 356,156 | .54 | $1,086,275 | 30-Nov-09 | | DFA U.S. SMALL CAP VALUE SERIES | 278,038 | .42 | $1,048,203 | 31-Jul-09 | | VANGUARD EXTENDED MARKET INDEX FUND | 269,818 | .41 | $1,160,217 | 30-Jun-09 | | DFA U.S. MICRO CAP SERIES | 252,876 | .38 | $953,342 | 31-Jul-09 | | Managers AMG Funds-Essex Small/Micro Cap Growth Fund | 213,341 | .32 | $876,831 | 30-Sep-09 | | ISHARES RUSSELL 2000 GROWTH INDEX FD | 197,853 | .30 | $603,451 | 30-Nov-09 | | COLLEGE RETIREMENT EQUITIES FUND-STOCK ACCOUNT | 146,919 | .22 | $631,751 | 30-Jun-09 | | VANGUARD TOTAL STOCK MARKET INDEX FUND | 133,828 | .20 | $575,460 | 30-Jun-09 | | Wells Fargo Advantage Small/Mid Cap Value Fd | 122,235 | .18 | $437,601 | 31-Oct-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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