| 19.17 Data as of 4:02pm ET |  +0.70 / +3.79%Today’s Change | 15.78 Today|||52-Week Range 24.10 | +5.56% Year-to-Date |
| Individual stakeholders | 70.05% |
| Mutual fund holders | 21.74% |
| Other institutional | 12.68% |
| 3/31/2013 | BMO ASSET MANAGEMENT CORP. Bought 1.4 Million shares of Laredo Petroleum Holdings... |
| 3/31/2013 | RS INVESTMENT MANAGEMENT CO. LLC Bought 958.3 Thousand shares of Laredo Petroleum Holdings... |
| 3/31/2013 | T. ROWE PRICE ASSOCIATES, INC. Bought 628.6 Thousand shares of Laredo Petroleum Holdings... |
| Stockholder | Stake | Shares owned | Total value ($) | Shares bought / sold | Total change |
|---|---|---|---|---|---|
| RS Investment Management Co. LLC | 8.46% | 10,947,564 | 188,298,101 | +958,316 | +9.59% |
| T. Rowe Price Associates, Inc. | 5.84% | 7,560,000 | 130,032,000 | +628,600 | +9.07% |
| AllianceBernstein LP | 1.89% | 2,446,636 | 42,082,139 | +137,589 | +5.96% |
| Jennison Associates LLC | 1.79% | 2,309,329 | 39,720,459 | +428,724 | +22.80% |
| TimesSquare Capital Management LL... | 1.37% | 1,777,600 | 30,574,720 | +492,800 | +38.36% |
| The Vanguard Group, Inc. | 1.27% | 1,640,547 | 28,217,408 | +60,590 | +3.83% |
| TIAA-CREF Asset Management LLC | 1.21% | 1,558,421 | 26,804,841 | -463,703 | -22.93% |
| BMO Asset Management Corp. | 1.07% | 1,384,203 | 23,808,292 | +1,383,341 | +160,480.39% |
| Columbia Wanger Asset Management ... | 1.07% | 1,382,500 | 23,779,000 | 0 | 0.00% |
| JPMorgan Investment Management, I... | 1.06% | 1,374,419 | 23,640,007 | -659,449 | -32.42% |
| Mutual fund | Stake | Shares owned | Total value ($) | Shares bought / sold | Total change |
|---|---|---|---|---|---|
| RS Global Natural Resources Fund | 3.46% | 4,476,982 | 77,004,090 | +2,983,190 | +199.71% |
| T Rowe Price Mid Cap Growth Fund | 2.13% | 2,750,000 | 47,300,000 | 0 | 0.00% |
| RS Partners Fund | 1.51% | 1,959,157 | 33,697,500 | +1,120,900 | +133.72% |
| T Rowe Price New Era Fund | 0.96% | 1,246,300 | 21,436,360 | +366,700 | +41.69% |
| Columbia Acorn Fund | 0.90% | 1,159,000 | 19,934,800 | 0 | 0.00% |
| Prudential Jennison Natural Resou... | 0.87% | 1,120,941 | 19,280,185 | 0 | 0.00% |
| CREF Stock Account | 0.85% | 1,096,455 | 18,859,026 | -284,410 | -20.60% |
| Oppenheimer Small & Mid Cap Value... | 0.62% | 800,000 | 13,760,000 | +100,000 | +14.29% |
| SPDR S&P Oil & Gas Exploration & ... | 0.47% | 606,224 | 10,427,053 | -76,205 | -11.17% |
| AllianceBernstein Small Cap Growt... | 0.42% | 546,372 | 9,397,598 | +126,945 | +30.27% |
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