| TOP INSTITUTIONAL HOLDERS |
| Holder | Shares | % Out | Value* | Reported | | BAMCO INC. | 3,955,297 | 6.75 | $197,764,850 | 30-Sep-09 | | BLAIR (WILLIAM) & COMPANY, L.L.C. | 3,260,995 | 5.57 | $163,049,750 | 30-Sep-09 | | ROYCE & ASSOCIATES, LLC | 2,595,498 | 4.43 | $129,774,900 | 30-Sep-09 | | DENT (D.F.) & COMPANY, INC. | 2,566,070 | 4.38 | $128,303,500 | 30-Sep-09 | | Barclays Global Investors UK Holdings Ltd | 2,441,034 | 4.17 | $122,051,700 | 30-Sep-09 | | PRICE (T.ROWE) ASSOCIATES INC | 2,024,900 | 3.46 | $101,245,000 | 30-Sep-09 | | VANGUARD GROUP, INC. (THE) | 1,974,224 | 3.37 | $98,711,200 | 30-Sep-09 | | RUANE, CUNNIFF & GOLDFARB INC. | 12,902,987 | 22.02 | $645,149,350 | 30-Sep-09 | | STATE STREET CORPORATION | 1,261,496 | 2.15 | $63,074,800 | 30-Sep-09 | | EAGLE ASSET MANAGEMENT, INC. | 1,132,899 | 1.93 | $56,644,950 | 30-Sep-09 |
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| Holder | Shares | % Out | Value* | Reported | | SEQUOIA FUND INC | 3,646,134 | 6.22 | $168,451,390 | 30-Jun-09 | | NEUBERGER & BERMAN GENESIS FUND | 2,796,662 | 4.77 | $139,833,100 | 30-Sep-09 | | ROYCE PREMIER FUND | 1,536,500 | 2.62 | $70,986,300 | 30-Jun-09 | | BARON ASSET FUND | 1,450,000 | 2.47 | $66,990,000 | 30-Jun-09 | | BARON GROWTH FUND | 1,225,000 | 2.09 | $56,595,000 | 30-Jun-09 | | BARON SMALL CAP FUND | 900,000 | 1.54 | $41,580,000 | 30-Jun-09 | | PRICE (T.ROWE) MID CAP GROWTH FUND | 800,000 | 1.37 | $40,000,000 | 30-Sep-09 | | VANGUARD EXPLORER FUND, INC. | 706,960 | 1.21 | $35,220,747 | 31-Jul-09 | | COLUMBIA ACORN FD | 665,000 | 1.13 | $30,723,000 | 30-Jun-09 | | VANGUARD MID-CAP INDEX FUND | 623,312 | 1.06 | $28,797,014 | 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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0.22% Nasdaq 
Major Holders
