| 85.61 Data as of 3:48pm ET |  +3.26 / +3.96%Today’s Change | 30.06 Today|||52-Week Range 95.85 | +48.17% Year-to-Date |
| Mutual fund holders | 34.78% |
| Individual stakeholders | 34.50% |
| Other institutional | 34.24% |
| 3/31/2013 | T. ROWE PRICE ASSOCIATES, INC. Bought 1.9 Million shares of Pharmacyclics Inc |
| 3/31/2013 | TWO SIGMA INVESTMENTS LLC Bought 551.6 Thousand shares of Pharmacyclics Inc |
| 3/31/2013 | DEERFIELD MANAGEMENT CO. LP Bought 345.1 Thousand shares of Pharmacyclics Inc |
| Stockholder | Stake | Shares owned | Total value ($) | Shares bought / sold | Total change |
|---|---|---|---|---|---|
| Baker Bros. Advisors LLC | 15.01% | 10,923,830 | 890,292,145 | -520,530 | -4.55% |
| T. Rowe Price Associates, Inc. | 10.05% | 7,310,630 | 595,816,345 | +1,913,430 | +35.45% |
| Capital Research & Management Co.... | 8.35% | 6,076,701 | 495,251,132 | -1,162,894 | -16.06% |
| The Vanguard Group, Inc. | 4.23% | 3,079,550 | 250,983,325 | +211,189 | +7.36% |
| BlackRock Fund Advisors | 3.88% | 2,824,769 | 230,218,674 | +195,098 | +7.42% |
| PRIMECAP Management Co. | 3.35% | 2,440,239 | 198,879,479 | -455,100 | -15.72% |
| SSgA Funds Management, Inc. | 1.72% | 1,254,427 | 102,235,801 | -161,457 | -11.40% |
| Fidelity Management & Research Co... | 1.47% | 1,071,811 | 87,352,597 | -52,892 | -4.70% |
| Northern Trust Investments, Inc. | 1.07% | 781,639 | 63,703,579 | -18,607 | -2.33% |
| Visium Asset Management LP | 1.04% | 758,334 | 61,804,221 | -77,454 | -9.27% |
| Mutual fund | Stake | Shares owned | Total value ($) | Shares bought / sold | Total change |
|---|---|---|---|---|---|
| American Funds Small Cap World Fu... | 4.22% | 3,067,456 | 249,997,664 | -166,800 | -5.16% |
| T Rowe Price Health Sciences Fund | 2.95% | 2,150,000 | 175,225,000 | 0 | 0.00% |
| PRIMECAP Odyssey Aggressive Growt... | 2.10% | 1,529,739 | 124,673,729 | -100 | -0.01% |
| American Variable Insurance Serie... | 1.92% | 1,395,593 | 113,740,830 | -221,724 | -13.71% |
| T Rowe Price Growth Stock Fund | 1.62% | 1,175,400 | 95,795,100 | +1,175,400 | -- |
| Vanguard Capital Opportunity Fund | 1.27% | 924,100 | 75,314,150 | -13,000 | -1.39% |
| T Rowe Price New Horizons Fund | 1.26% | 915,000 | 74,572,500 | 0 | 0.00% |
| Fidelity Select Biotechnology Por... | 1.25% | 913,244 | 74,429,386 | +162,187 | +21.59% |
| iShares Russell 2000 Index Fund | 1.18% | 859,667 | 70,062,861 | -11,728 | -1.35% |
| Vanguard Total Stock Market Index... | 1.02% | 743,576 | 60,601,444 | +37,707 | +5.34% |
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