| 35.75 Data as of May 20 |  -0.95 / -2.59%Today’s Change | 19.03 Today|||52-Week Range 39.00 | +54.29% Year-to-Date |
| Mutual fund holders | 61.01% |
| Other institutional | 46.80% |
| Individual stakeholders | 28.70% |
| 3/31/2013 | FIDELITY MANAGEMENT & RESEARCH C... Bought 1.9 Million shares of Seattle Genetics Inc |
| 3/31/2013 | ROCKEFELLER & CO., INC. Bought 1.4 Million shares of Seattle Genetics Inc |
| 3/31/2013 | THORNBURG INVESTMENT MANAGEMENT,... Bought 746.7 Thousand shares of Seattle Genetics Inc |
| Stockholder | Stake | Shares owned | Total value ($) | Shares bought / sold | Total change |
|---|---|---|---|---|---|
| Baker Bros. Advisors LLC | 15.97% | 19,322,947 | 713,982,892 | 0 | 0.00% |
| Fidelity Management & Research Co... | 14.89% | 18,014,776 | 665,645,973 | +1,942,286 | +12.08% |
| PRIMECAP Management Co. | 8.62% | 10,429,099 | 385,355,208 | -94,058 | -0.89% |
| Columbia Wanger Asset Management ... | 7.13% | 8,625,000 | 318,693,750 | -340,304 | -3.80% |
| Capital Guardian Trust Co. | 6.29% | 7,605,644 | 281,028,546 | +51,743 | +0.68% |
| BlackRock Fund Advisors | 5.02% | 6,076,480 | 224,525,936 | +364,171 | +6.38% |
| The Vanguard Group, Inc. | 4.61% | 5,582,830 | 206,285,569 | +36,785 | +0.66% |
| Baillie Gifford & Co. | 4.25% | 5,143,340 | 190,046,413 | +716,440 | +16.18% |
| Wellington Management Co. LLP | 4.06% | 4,912,511 | 181,517,281 | -1,532,571 | -23.78% |
| BlackRock Advisors LLC | 2.23% | 2,700,343 | 99,777,674 | +274,935 | +11.34% |
| Mutual fund | Stake | Shares owned | Total value ($) | Shares bought / sold | Total change |
|---|---|---|---|---|---|
| Fidelity Growth Company Fund | 9.84% | 11,909,340 | 440,050,113 | 0 | 0.00% |
| Columbia Acorn Fund | 5.41% | 6,550,000 | 242,022,500 | 0 | 0.00% |
| PRIMECAP Odyssey Growth Fund | 3.77% | 4,556,400 | 168,358,980 | -25,000 | -0.55% |
| PRIMECAP Odyssey Aggressive Growt... | 2.41% | 2,917,500 | 107,801,625 | 0 | 0.00% |
| Oppenheimer Global Opportunities ... | 1.57% | 1,900,000 | 70,205,000 | 0 | 0.00% |
| Vanguard Investment Series Plc - ... | 1.41% | 1,701,500 | 62,870,425 | -175,000 | -9.33% |
| Fidelity Advisor Growth Opportuni... | 1.38% | 1,670,467 | 61,723,756 | +15,100 | +0.91% |
| Vanguard Small Cap Index Fund | 1.38% | 1,670,941 | 61,741,270 | +61,771 | +3.84% |
| iShares Russell 2000 Index Fund | 1.24% | 1,500,426 | 55,440,741 | -21,984 | -1.44% |
| Vanguard Explorer Fund | 1.17% | 1,411,504 | 52,155,073 | -81,800 | -5.48% |
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