| 49.35 Real-Time Quote |  +0.69 / +1.42%Today’s Change | 35.68 Today|||52-Week Range 54.86 | +13.79% Year-to-Date |
| Mutual fund holders | 44.62% |
| Other institutional | 44.54% |
| Individual stakeholders | 0.90% |
| 3/31/2013 | SYSTEMATIC FINANCIAL MANAGEMENT ... Bought 2.7 Million shares of Whiting Petroleum Corp |
| 3/31/2013 | FIDELITY MANAGEMENT & RESEARCH C... Bought 2.1 Million shares of Whiting Petroleum Corp |
| 3/31/2013 | FRED ALGER MANAGEMENT, INC. Bought 1.4 Million shares of Whiting Petroleum Corp |
| Stockholder | Stake | Shares owned | Total value ($) | Shares bought / sold | Total change |
|---|---|---|---|---|---|
| The Vanguard Group, Inc. | 4.89% | 5,837,021 | 268,911,557 | +320,127 | +5.80% |
| Wellington Management Co. LLP | 3.55% | 4,234,954 | 195,104,331 | -1,090,619 | -20.48% |
| BlackRock Advisors LLC | 3.23% | 3,852,573 | 177,488,038 | -1,613,388 | -29.52% |
| BlackRock Fund Advisors | 3.21% | 3,832,837 | 176,578,801 | +66,699 | +1.77% |
| Fidelity Management & Research Co... | 3.10% | 3,697,409 | 170,339,633 | +2,139,529 | +137.34% |
| Perkins Investment Management LLC | 2.82% | 3,361,144 | 154,847,904 | +58,435 | +1.77% |
| Jennison Associates LLC | 2.65% | 3,162,635 | 145,702,594 | +1,049,025 | +49.63% |
| Cramer Rosenthal McGlynn LLC | 2.34% | 2,798,661 | 128,934,312 | +245,140 | +9.60% |
| Neuberger Berman LLC | 2.33% | 2,779,892 | 128,069,624 | +61,453 | +2.26% |
| TimesSquare Capital Management LL... | 2.30% | 2,745,500 | 126,485,185 | +164,800 | +6.39% |
| Mutual fund | Stake | Shares owned | Total value ($) | Shares bought / sold | Total change |
|---|---|---|---|---|---|
| Janus Perkins Mid Cap Value Fund | 2.10% | 2,503,147 | 115,319,982 | +3,147 | +0.13% |
| BlackRock Global Allocation Fund | 1.92% | 2,289,011 | 105,454,737 | -56,227 | -2.40% |
| Vanguard Mid Cap Index Fund | 1.43% | 1,709,696 | 78,765,695 | +173,257 | +11.28% |
| Van Eck Global Hard Assets Fund | 1.41% | 1,678,100 | 77,310,067 | -618,800 | -26.94% |
| Vanguard Total Stock Market Index... | 1.37% | 1,638,036 | 75,464,319 | +64,916 | +4.13% |
| Prudential Jennison Natural Resou... | 1.16% | 1,380,967 | 63,621,150 | -21,064 | -1.50% |
| Ivy Global Natural Resources Fund | 1.13% | 1,350,000 | 62,194,500 | +1,350,000 | -- |
| Mackenzie Universal Canadian Reso... | 0.96% | 1,150,000 | 52,980,500 | 0 | 0.00% |
| Vanguard Energy Fund | 0.91% | 1,085,355 | 50,002,305 | -165,300 | -13.22% |
| Janus Contrarian Fund | 0.87% | 1,041,544 | 47,983,932 | 0 | 0.00% |
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