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

Institutional Holders (2015Q4)
Portfolio Summary: 253 Institutional holders with a total value of $6,379,588,145.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 BAKER BROS. ADVISORS LP 37,293,728 1,673,743,000 26.24%
2 BAILLIE GIFFORD & CO 17,152,807 769,818,000 12.07%
3 FMR LLC 17,130,496 768,817,000 12.05%
4 PRIMECAP MANAGEMENT CO/CA/ 12,882,175 578,152,000 9.06%
5 VANGUARD GROUP INC 6,881,088 308,823,000 4.84%
6 Artisan Partners Limited Partnership 4,382,053 196,667,000 3.08%
7 PRICE T ROWE ASSOCIATES INC /MD/ 3,505,470 157,325,000 2.47%
8 FIRST TRUST ADVISORS LP 3,380,705 151,726,000 2.38%
9 WASATCH ADVISORS LP 2,914,497 130,803,000 2.05%
10 BlackRock Fund Advisors 2,705,468 121,421,000 1.90%
11 BlackRock Institutional Trust Company, N.A. 2,622,216 117,685,000 1.84%
12 STATE STREET CORP 1,961,413 88,018,000 1.38%
13 COLUMBIA WANGER ASSET MANAGEMENT LLC 1,621,001 72,751,000 1.14%
14 OppenheimerFunds, Inc. 1,400,000 62,832,000 0.98%
15 Redmile Group, LLC 1,372,492 61,597,000 0.97%
16 Invesco Ltd. 1,297,542 58,234,000 0.91%
17 SECTORAL ASSET MANAGEMENT INC 1,275,775 57,257,000 0.90%
18 PINNACLE ASSOCIATES LTD 1,183,190 53,102,000 0.83%
19 THORNBURG INVESTMENT MANAGEMENT INC 1,076,252 48,302,000 0.76%
20 NORGES BANK 883,124 39,635,000 0.62%
21 CITADEL ADVISORS LLC 849,730 38,136,000 0.60%
22 Mitsubishi UFJ Trust & Banking Corp 818,050 36,714,000 0.58%
23 WELLINGTON MANAGEMENT GROUP LLP 781,199 35,061,000 0.55%
24 MORGAN STANLEY 744,747 33,425,000 0.52%
25 DEUTSCHE BANK AG\ 682,906 30,645,000 0.48%
26 BLAIR WILLIAM & CO/IL 681,900 30,603,000 0.48%
27 GEODE CAPITAL MANAGEMENT, LLC 659,393 29,593,000 0.46%
28 Lagoda Investment Management, L.P. 631,307 28,333,000 0.44%
29 EVENTIDE ASSET MANAGEMENT, LLC 545,300 24,473,000 0.38%
30 Bank of New York Mellon Corp 458,633 20,582,000 0.32%
31 RUSSELL FRANK CO/ 412,586 18,641,000 0.29%
32 BANK OF AMERICA CORP /DE/ 409,008 18,357,000 0.29%
33 NORTHERN TRUST CORP 401,250 18,008,000 0.28%
34 SUSQUEHANNA INTERNATIONAL GROUP, LLP 390,100 17,508,000 0.27% Call
35 NEW YORK STATE COMMON RETIREMENT FUND 388,566 17,439,000 0.27%
36 MANNING & NAPIER ADVISORS LLC 357,750 16,054,000 0.25%
37 AXA S.A. 349,082 15,667,000 0.25%
38 TIAA CREF INVESTMENT MANAGEMENT LLC 306,654 13,763,000 0.22%
39 CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM 294,700 13,226,000 0.21%
40 BLACKROCK ADVISORS LLC 278,255 12,488,000 0.20%
41 CREDIT SUISSE AG/ 257,017 11,534,000 0.18%
42 D. E. Shaw & Co., Inc. 242,005 10,861,000 0.17%
43 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 233,064 10,460,000 0.16%
44 Ghost Tree Capital, LLC 225,000 10,098,000 0.16%
45 VAN ECK ASSOCIATES CORP 222,246 9,974,000 0.16%
46 UBS Group AG 210,435 9,444,000 0.15%
47 GUGGENHEIM CAPITAL LLC 205,705 9,232,000 0.14%
48 ROYAL BANK OF CANADA 205,335 9,215,000 0.14%
49 MACQUARIE GROUP LTD 204,530 9,179,000 0.14%
50 CANADA PENSION PLAN INVESTMENT BOARD 203,900 9,151,000 0.14%
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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.