| Top Institutional Holders |
|---|
| Holder | Shares | % Out | Value* | Reported |
|---|
| Vanguard Group, Inc. (The) | 14,680,420 | 5.53 | 133,445,017 | Mar 31, 2013 | | Citadel Advisors LLC | 11,061,583 | 4.17 | 100,549,789 | Mar 31, 2013 | | Munder Capital Management, Inc. | 7,644,875 | 2.88 | 69,491,913 | Mar 31, 2013 | | BlackRock Institutional Trust Company, N.A. | 7,470,540 | 2.81 | 67,907,208 | Mar 31, 2013 | | BlackRock Fund Advisors | 6,978,348 | 2.63 | 63,433,183 | Mar 31, 2013 | | Jennison Associates LLC | 6,780,126 | 2.55 | 61,631,345 | Mar 31, 2013 | | State Street Corporation | 6,748,593 | 2.54 | 61,344,710 | Mar 31, 2013 | | Neuberger Berman Group, LLC | 6,025,837 | 2.27 | 54,774,858 | Mar 31, 2013 | | Frontier Capital Management Company Inc | 5,932,967 | 2.24 | 53,930,670 | Mar 31, 2013 | | Millennium Management LLC | 5,027,918 | 1.89 | 45,703,774 | Mar 31, 2013 |
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| Holder | Shares | % Out | Value* | Reported |
|---|
| Prudential Jennison Natural Resources Fd | 5,097,533 | 1.92 | 39,913,683 | Apr 30, 2013 | | Neuberger & Berman Genesis Fund | 4,492,437 | 1.69 | 40,836,252 | Mar 31, 2013 | | iShares Russell 2000 Index Fund | 4,156,814 | 1.57 | 32,547,853 | Apr 30, 2013 | | Vanguard Small-Cap Index Fund | 3,955,835 | 1.49 | 35,958,540 | Mar 31, 2013 | | Vanguard Total Stock Market Index Fund | 3,659,888 | 1.38 | 33,268,381 | Mar 31, 2013 | | Munder Mid-Cap Core Growth Fund | 3,368,200 | 1.27 | 30,616,938 | Mar 31, 2013 | | Vanguard Small-Cap Growth Index Fund | 3,169,658 | 1.19 | 28,812,191 | Mar 31, 2013 | | College Retirement Equities Fund-Stock Account | 2,791,271 | 1.05 | 25,372,653 | Mar 31, 2013 | | Vanguard Extended Market Index Fund | 2,257,725 | 0.85 | 20,522,720 | Mar 31, 2013 | | Fidelity Leveraged Company Stock Fund | 2,019,747 | 0.76 | 18,581,672 | Jan 31, 2013 |
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View Transactions for Insiders & Institutional Holders Value shown is computed using the security's price on the report date given. Currency in USD. |