| 54.66 Data as of Jun 19 |  -1.04 / -1.87%Today’s Change | 30.43 Today|||52-Week Range 58.08 | +39.87% Year-to-Date |
| Other institutional | 75.81% |
| Mutual fund holders | 29.95% |
| Individual stakeholders | 10.74% |
| 3/31/2013 | JENNISON ASSOCIATES LLC Bought 1.9 Million shares of SemGroup Corp |
| 3/31/2013 | LONE PINE CAPITAL LLC Bought 1.7 Million shares of SemGroup Corp |
| 3/31/2013 | IRIDIAN ASSET MANAGEMENT LLC Bought 1.4 Million shares of SemGroup Corp |
| Stockholder | Stake | Shares owned | Total value ($) | Shares bought / sold | Total change |
|---|---|---|---|---|---|
| Lone Pine Capital LLC | 9.30% | 3,906,318 | 204,378,558 | +1,733,383 | +79.77% |
| Wellington Management Co. LLP | 8.13% | 3,417,078 | 178,781,521 | -23,741 | -0.69% |
| BlackRock Fund Advisors | 5.46% | 2,294,847 | 120,066,395 | +199,601 | +9.53% |
| The Vanguard Group, Inc. | 5.25% | 2,206,292 | 115,433,197 | +55,936 | +2.60% |
| Soroban Capital Partners LLC | 4.76% | 2,000,000 | 104,640,000 | -749,969 | -27.27% |
| Jennison Associates LLC | 4.44% | 1,865,991 | 97,628,649 | +1,865,991 | -- |
| Senator Investment Group | 3.95% | 1,661,000 | 86,903,520 | 0 | 0.00% |
| Iridian Asset Management LLC | 3.26% | 1,370,213 | 71,689,544 | +1,370,213 | -- |
| New Mountain Vantage Advisers LLC | 2.55% | 1,073,097 | 56,144,435 | -972,650 | -47.54% |
| Third Avenue Management LLC | 2.39% | 1,004,001 | 52,529,332 | +3,419 | +0.34% |
| Mutual fund | Stake | Shares owned | Total value ($) | Shares bought / sold | Total change |
|---|---|---|---|---|---|
| Prudential Jennison Utility Fund | 2.28% | 956,497 | 50,043,923 | +247,898 | +34.98% |
| Vanguard Explorer Fund | 1.95% | 817,740 | 42,784,157 | -22,800 | -2.71% |
| Met Investors-Third Avenue Small ... | 1.67% | 700,096 | 36,629,023 | 0 | 0.00% |
| EdgePoint Global Portfolio | 1.64% | 689,800 | 36,090,336 | -478,300 | -40.95% |
| iShares Russell 2000 Index Fund | 1.51% | 633,659 | 33,153,039 | -25,703 | -3.90% |
| Vanguard Small Cap Index Fund | 1.49% | 624,961 | 32,697,960 | +1,033 | +0.17% |
| Vanguard Total Stock Market Index... | 1.24% | 522,297 | 27,326,579 | +22,156 | +4.43% |
| Prudential Jennison Small Company... | 1.16% | 488,520 | 25,559,366 | -1,255 | -0.26% |
| Vanguard Small Cap Growth Index F... | 1.08% | 451,916 | 23,644,245 | +12,708 | +2.89% |
| Vanguard Extended Market Index Fu... | 0.86% | 359,971 | 18,833,683 | +11,552 | +3.32% |
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