| Top Holders
| | | Shares Held | % O/S | Share Change | Filing Date | | Wellington Management Company, LLP | 10,417,757 | 13.9 | 2,585,215 | 12/31/09 | | BlackRock Institutional Trust Company, N.A. | 8,409,561 | 11.2 | 2,789,087 | 12/31/09 | | T. Rowe Price Associates, Inc. | 5,508,321 | 7.4 | -2,071,400 | 12/31/09 | | Fidelity Management & Research | 5,067,745 | 6.8 | -733,554 | 12/31/09 | | Vanguard Group, Inc. | 3,863,369 | 5.2 | -2,378 | 12/31/09 | | State Street Global Advisors (US) | 2,841,133 | 3.8 | 199,461 | 12/31/09 | | TimesSquare Capital Management, LLC | 1,937,250 | 2.6 | 509,950 | 12/31/09 | | Ridgeback Capital Management, L.L.C. | 1,890,000 | 2.5 | 1,890,000 | 12/31/09 | | Halbis Capital Management (UK) Limited | 1,565,657 | 2.1 | 5,855 | 12/31/09 | | Deutsche Bank Securities Inc. | 1,521,772 | 2.0 | -247,635 | 12/31/09 |
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