| TOP INSTITUTIONAL HOLDERS |
| Holder | Shares | % Out | Value* | Reported | | MORGAN STANLEY | 2,644,089 | 7.85 | $101,453,694 | 30-Sep-09 | | ARTISAN PARTNERS LIMITED PARTNERSHIP | 1,928,200 | 5.72 | $73,985,034 | 30-Sep-09 | | NEXT CENTURY GROWTH INVESTORS LLC | 1,841,414 | 5.47 | $70,655,055 | 30-Sep-09 | | FMR LLC | 1,776,939 | 5.27 | $68,181,149 | 30-Sep-09 | | Barclays Global Investors UK Holdings Ltd | 1,558,234 | 4.63 | $59,789,438 | 30-Sep-09 | | FEDERATED INVESTORS, INC. | 1,400,768 | 4.16 | $53,747,468 | 30-Sep-09 | | WADDELL & REED FINANCIAL INC. | 1,390,456 | 4.13 | $53,351,796 | 30-Sep-09 | | BLAIR (WILLIAM) & COMPANY, L.L.C. | 1,358,163 | 4.03 | $52,112,714 | 30-Sep-09 | | AXA | 1,226,493 | 3.64 | $47,060,536 | 30-Sep-09 | | FRANKLIN RESOURCES, INC | 1,123,514 | 3.33 | $43,109,232 | 30-Sep-09 |
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| Holder | Shares | % Out | Value* | Reported | | FEDERATED KAUFMANN FUND | 1,208,261 | 3.59 | $44,633,161 | 31-Jul-09 | | MORGAN STANLEY INST FD INC-SMALL COMPANY GROWTH PORT | 1,041,115 | 3.09 | $38,531,666 | 30-Jun-09 | | VARIABLE INSURANCE PRODUCTS FD III-MID-CAP PORTFOLIO | 782,962 | 2.32 | $30,042,251 | 30-Sep-09 | | Columbia Fds Ser Tr-Columbia Marsico 21st Centry Fd | 715,434 | 2.12 | $28,781,909 | 31-Aug-09 | | FIDELITY GROWTH COMPANY FUND | 569,485 | 1.69 | $21,851,139 | 30-Sep-09 | | ISHARES RUSSELL 2000 INDEX FD | 492,185 | 1.46 | $18,885,138 | 30-Sep-09 | | FRANKLIN STRATEGIC SERIES-FRANKLIN SMALL-MID CAP GROWTH | 434,200 | 1.29 | $16,660,254 | 30-Sep-09 | | RAINIER SMALL/MIDCAP EQUITY PORTFOLIO | 284,720 | .85 | $10,537,487 | 30-Jun-09 | | AMERICAN CENTURY HERITAGE FUND | 274,300 | .81 | $10,524,891 | 30-Sep-09 | | LORD ABBETT DEVELOPING GROWTH FUND | 270,735 | .80 | $10,000,950 | 31-Jul-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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