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SEATTLE GENETICS INC
SEATTLE GENETICS INC. Institutional holdings reported to the SEC.

Institutional Holders (2014Q1)
Portfolio Summary: 228 Institutional holders with a total value of $5,892,684,768.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 BAKER BROS. ADVISORS LP 20,739,426 944,887,000 16.03%
2 FMR LLC 18,438,783 840,072,000 14.26%
3 BAILLIE GIFFORD & CO 12,861,181 585,956,000 9.94%
4 PRIMECAP MANAGEMENT CO/CA/ 11,007,005 501,479,000 8.51%
5 COLUMBIA WANGER ASSET MANAGEMENT LLC 6,626,000 301,881,000 5.12%
6 VANGUARD GROUP INC 6,320,727 287,972,000 4.89%
7 CAPITAL GUARDIAN TRUST CO 6,151,231 280,250,000 4.76%
8 WELLINGTON MANAGEMENT GROUP LLP 2,953,577 134,565,000 2.28%
9 PRICE T ROWE ASSOCIATES INC /MD/ 2,841,203 129,445,000 2.20%
10 BlackRock Institutional Trust Company, N.A. 2,719,890 123,918,000 2.10%
11 BlackRock Fund Advisors 2,296,584 104,632,000 1.78%
12 WASATCH ADVISORS LP 2,146,505 97,795,000 1.66%
13 Capital International Investors 1,769,000 80,596,000 1.37%
14 EAGLE ASSET MANAGEMENT INC 1,742,147 79,372,000 1.35%
15 STATE STREET CORP 1,542,679 70,290,000 1.19%
16 BLACKROCK ADVISORS LLC 1,426,337 64,984,000 1.10%
17 PINNACLE ASSOCIATES LTD 1,424,186 64,886,000 1.10%
18 OppenheimerFunds, Inc. 1,400,000 63,784,000 1.08%
19 USS Investment Management Ltd 1,203,291 54,822,000 0.93%
20 Invesco Ltd. 1,055,416 48,085,000 0.82%
21 ROCKEFELLER FINANCIAL SERVICES INC 988,657 45,044,000 0.76%
22 MORGAN STANLEY 925,345 42,158,000 0.72%
23 Mitsubishi UFJ Trust & Banking Corp 854,740 38,942,000 0.66%
24 DEUTSCHE BANK AG\ 823,472 37,515,000 0.64%
25 FEDERATED HERMES, INC. 794,023 36,176,000 0.61%
26 NORGES BANK 781,238 35,593,000 0.60%
27 BlackRock Group LTD 649,363 29,585,000 0.50%
28 RAINIER INVESTMENT MANAGEMENT LLC 628,760 28,644,000 0.49%
29 BLAIR WILLIAM & CO/IL 583,852 26,600,000 0.45%
30 GEODE CAPITAL MANAGEMENT, LLC 560,357 25,529,000 0.43%
31 Capital International Sarl 514,200 23,427,000 0.40%
32 HealthCor Management, L.P. 500,000 22,780,000 0.39% Put
33 NORTHERN TRUST CORP 497,850 22,682,000 0.38%
34 BROWN ADVISORY INC 462,629 21,078,000 0.36%
35 CAPITAL INTERNATIONAL LTD /CA/ 462,100 21,053,000 0.36%
36 SECTORAL ASSET MANAGEMENT INC 442,819 20,175,000 0.34%
37 BANK OF AMERICA CORP /DE/ 416,007 18,954,000 0.32%
38 FIRST TRUST ADVISORS LP 415,810 18,944,000 0.32%
39 Bank of New York Mellon Corp 408,899 18,629,000 0.32%
40 BARCLAYS PLC 395,100 17,780,000 0.30% Put
41 SUSQUEHANNA INTERNATIONAL GROUP, LLP 377,000 17,176,000 0.29% Call
42 Capital World Investors 372,000 16,948,000 0.29%
43 SUSQUEHANNA INTERNATIONAL GROUP, LLP 364,000 16,584,000 0.28% Put
44 Capital International, Inc./CA/ 333,400 15,190,000 0.26%
45 TIAA CREF INVESTMENT MANAGEMENT LLC 333,023 15,173,000 0.26%
46 BlackRock Finance, Inc. 304,397 13,868,000 0.24%
47 AXA S.A. 290,181 13,221,000 0.22%
48 GOLDMAN SACHS GROUP INC 283,218 12,904,000 0.22%
49 ALLIANCEBERNSTEIN L.P. 281,236 12,813,000 0.22%
50 MACQUARIE GROUP LTD 277,575 12,646,000 0.21%
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From 2023-01-03 onward, the SEC requires values to be reported in nearest dollars. Earlier filings reported values in thousands; therefore, positions shown as $0 in older filings may represent actual values between $0–$999.