| TOP INSTITUTIONAL HOLDERS |
| Holder | Shares | % Out | Value* | Reported | | GILDER, GAGNON, HOWE & CO. | 1,107,245 | 23.35 | $4,428,980 | 30-Sep-09 | | DIMENSIONAL FUND ADVISORS LP | 34,288 | .72 | $137,152 | 30-Sep-09 | | CALPERS (CALIFORNIA-PUBLIC EMPLOYEES RETIREMENT SYSTEM) | 26,411 | .56 | $125,716 | 30-Jun-09 | | UBS AG | 700 | .01 | $2,800 | 30-Sep-09 |
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| Holder | Shares | % Out | Value* | Reported | | DFA TAX-MANAGED U.S. SMALL CAP PORTFOLIO | 13,817 | .29 | $65,630 | 31-Jul-09 | | DFA Tax Managed U.S. Targeted Value Port | 5,621 | .12 | $26,699 | 31-Jul-09 | | SPARTAN EXTENDED MARKET INDEX FUND | 4,775 | .10 | $19,100 | 30-Sep-09 | | DFA U.S. SMALL CAP VALUE SERIES | 3,480 | .07 | $32,677 | 30-Apr-09 | | DFA U.S. Vector Equity Portfolio | 2,100 | .04 | $19,719 | 30-Apr-09 | | DFA U.S. MICRO CAP SERIES | 1,350 | .03 | $12,676 | 30-Apr-09 | | DFA TAX MANAGED U.S. EQUITY SERIES | 700 | .01 | $6,573 | 30-Apr-09 | | FIDELITY NASDAQ COMPOSITE INDEX FUND | 494 | .01 | $1,976 | 30-Sep-09 | | DFA T.A. U.S. Core Equity 2 Portfolio | 200 | .00 | $1,878 | 30-Apr-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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