| TOP INSTITUTIONAL HOLDERS |
| Holder | Shares | % Out | Value* | Reported | | NEUBERGER BERMAN GROUP, LLC | 5,206,084 | 7.40 | $295,393,206 | 30-Sep-09 | | Barclays Global Investors UK Holdings Ltd | 3,264,682 | 4.64 | $185,238,056 | 30-Sep-09 | | VANGUARD GROUP, INC. (THE) | 2,592,642 | 3.69 | $147,106,507 | 30-Sep-09 | | BAMCO INC. | 2,113,410 | 3.00 | $119,914,883 | 30-Sep-09 | | SELECT EQUITY GROUP, INC. | 1,848,059 | 2.63 | $104,858,867 | 30-Sep-09 | | FRIESS ASSOCIATES INC | 1,691,665 | 2.40 | $95,985,072 | 30-Sep-09 | | STATE STREET CORPORATION | 1,675,025 | 2.38 | $95,040,918 | 30-Sep-09 | | RAINIER INVESTMENT MANAGEMENT | 1,502,085 | 2.14 | $85,228,302 | 30-Sep-09 | | MUNDER CAPITAL MANAGEMENT, INC. | 1,366,135 | 1.94 | $77,514,499 | 30-Sep-09 | | INVESTEC ASSET MANAGEMENT LTD | 989,877 | 1.41 | $56,165,620 | 30-Sep-09 |
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| Holder | Shares | % Out | Value* | Reported | | NEUBERGER & BERMAN GENESIS FUND | 4,050,055 | 5.76 | $229,800,120 | 30-Sep-09 | | BARON GROWTH FUND | 1,575,000 | 2.24 | $85,538,250 | 30-Jun-09 | | BRANDYWINE FUND, INC. | 875,800 | 1.25 | $49,692,892 | 30-Sep-09 | | VANGUARD MID-CAP INDEX FUND | 739,398 | 1.05 | $40,156,705 | 30-Jun-09 | | Munder Mid-Cap Core Growth Fund | 681,675 | .97 | $37,021,769 | 30-Jun-09 | | VANGUARD TOTAL STOCK MARKET INDEX FUND | 650,761 | .93 | $35,342,829 | 30-Jun-09 | | MIDCAP SPDR TRUST SERIES I | 598,305 | .85 | $37,148,757 | 30-Sep-08 | | ISHARES S&P MIDCAP 400 INDEX FD | 496,143 | .71 | $28,220,613 | 31-Oct-09 | | RAINIER SMALL/MIDCAP EQUITY PORTFOLIO | 487,030 | .69 | $26,450,599 | 30-Jun-09 | | COLLEGE RETIREMENT EQUITIES FUND-STOCK ACCOUNT | 482,216 | .69 | $26,189,150 | 30-Jun-09 |
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Value shown is computed using the security's price on the report date given.
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