| TOP INSTITUTIONAL HOLDERS |
| Holder | Shares | % Out | Value* | Reported | | DEERFIELD MANAGEMENT | 944,499 | 5.35 | $7,555,992 | 30-Sep-09 | | WASATCH ADVISORS INC | 514,628 | 2.92 | $4,117,024 | 30-Sep-09 | | DIAMOND CAPITAL MANAGEMENT INC. | 459,032 | 2.60 | $3,672,256 | 30-Sep-09 | | Barclays Global Investors UK Holdings Ltd | 343,668 | 1.95 | $2,749,344 | 30-Sep-09 | | GOLDMAN SACHS GROUP INC | 244,264 | 1.38 | $1,954,112 | 30-Sep-09 | | STATE STREET CORPORATION | 155,920 | .88 | $1,247,360 | 30-Sep-09 | | DIMENSIONAL FUND ADVISORS LP | 144,630 | .82 | $1,157,040 | 30-Sep-09 | | SAND HILL ADVISORS, INC. | 87,472 | .50 | $699,776 | 30-Sep-09 | | PRICE (T.ROWE) ASSOCIATES INC | 80,958 | .46 | $647,664 | 30-Sep-09 | | TIAA-CREF INVESTMENT MANAGEMENT, LLC | 56,519 | .32 | $452,152 | 30-Sep-09 |
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| Holder | Shares | % Out | Value* | Reported | | ISHARES RUSSELL 2000 INDEX FD | 151,324 | .86 | $1,210,592 | 30-Sep-09 | | Goldman Sachs Tr-Goldman Sachs Small/Mid Cap Growth Fund | 139,446 | .79 | $786,475 | 30-Jun-09 | | ISHARES RUSSELL 2000 GROWTH INDEX FD | 79,846 | .45 | $638,768 | 30-Sep-09 | | COLLEGE RETIREMENT EQUITIES FUND-STOCK ACCOUNT | 55,602 | .32 | $313,595 | 30-Jun-09 | | MGI U.S. Small/Mid Cap Growth Equity Fd | 38,788 | .22 | $218,764 | 30-Jun-09 | | ISHARES Russell Micro Cap (TM) Index Fund | 19,272 | .11 | $154,176 | 30-Sep-09 | | DFA TAX-MANAGED U.S. SMALL CAP PORTFOLIO | 14,960 | .08 | $117,884 | 31-Jul-09 | | SPARTAN EXTENDED MARKET INDEX FUND | 8,776 | .05 | $70,208 | 30-Sep-09 | | Valic Company I-Small Cap Index Fd | 8,364 | .05 | $62,228 | 31-Aug-09 | | John Hancock Trust-Small Cap Index Tr | 8,189 | .05 | $46,185 | 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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