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

Institutional Holders (2016Q1)
Portfolio Summary: 209 Institutional holders with a total value of $4,985,352,520.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 BAKER BROS. ADVISORS LP 43,235,267 1,517,126,000 30.43%
2 BAILLIE GIFFORD & CO 17,270,681 606,029,000 12.16%
3 FMR LLC 16,867,149 591,868,000 11.87%
4 PRIMECAP MANAGEMENT CO/CA/ 13,589,187 476,845,000 9.56%
5 VANGUARD GROUP INC 6,932,099 243,248,000 4.88%
6 Artisan Partners Limited Partnership 4,372,346 153,426,000 3.08%
7 PRICE T ROWE ASSOCIATES INC /MD/ 3,695,953 129,691,000 2.60%
8 BlackRock Fund Advisors 2,896,247 101,629,000 2.04%
9 WASATCH ADVISORS LP 2,864,018 96,346,000 1.93%
10 BlackRock Institutional Trust Company, N.A. 2,618,683 91,890,000 1.84%
11 STATE STREET CORP 2,319,710 81,406,000 1.63%
12 COLUMBIA WANGER ASSET MANAGEMENT LLC 1,763,796 61,892,000 1.24%
13 OppenheimerFunds, Inc. 1,400,000 49,126,000 0.99%
14 Invesco Ltd. 1,269,441 44,545,000 0.89%
15 FIRST TRUST ADVISORS LP 1,256,085 44,076,000 0.88%
16 PINNACLE ASSOCIATES LTD 1,197,610 42,024,000 0.84%
17 Redmile Group, LLC 970,121 34,042,000 0.68%
18 Mitsubishi UFJ Trust & Banking Corp 903,839 31,716,000 0.64%
19 NORGES BANK 838,784 29,433,000 0.59%
20 EVENTIDE ASSET MANAGEMENT, LLC 835,506 29,318,000 0.59%
21 THORNBURG INVESTMENT MANAGEMENT INC 792,602 27,812,000 0.56%
22 DEUTSCHE BANK AG\ 782,468 27,456,000 0.55%
23 BLAIR WILLIAM & CO/IL 712,572 25,004,000 0.50%
24 GEODE CAPITAL MANAGEMENT, LLC 711,458 24,965,000 0.50%
25 Lagoda Investment Management, L.P. 584,539 20,511,000 0.41%
26 RUSSELL FRANK CO/ 460,520 16,160,000 0.32%
27 Bank of New York Mellon Corp 442,190 15,517,000 0.31%
28 NORTHERN TRUST CORP 425,815 14,942,000 0.30%
29 NEW YORK STATE COMMON RETIREMENT FUND 396,540 13,915,000 0.28%
30 BLACKROCK ADVISORS LLC 370,334 12,995,000 0.26%
31 BANK OF AMERICA CORP /DE/ 368,652 12,936,000 0.26%
32 CREDIT SUISSE AG/ 328,987 11,543,000 0.23%
33 TIAA CREF INVESTMENT MANAGEMENT LLC 309,512 10,861,000 0.22%
34 GOLDMAN SACHS GROUP INC 307,016 10,773,000 0.22%
35 MANNING & NAPIER ADVISORS LLC 289,140 10,144,000 0.20%
36 CANADA PENSION PLAN INVESTMENT BOARD 288,800 10,134,000 0.20%
37 CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM 243,700 8,551,000 0.17%
38 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 237,533 8,336,000 0.17%
39 BOXER CAPITAL, LLC 233,600 8,197,000 0.16%
40 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 224,099 7,864,000 0.16%
41 MILLENNIUM MANAGEMENT LLC 224,089 7,863,000 0.16%
42 MORGAN STANLEY 223,633 7,848,000 0.16%
43 VAN ECK ASSOCIATES CORP 221,065 7,757,000 0.16%
44 ROYAL BANK OF CANADA 213,546 7,493,000 0.15%
45 MACQUARIE GROUP LTD 211,036 7,405,000 0.15%
46 DIMENSIONAL FUND ADVISORS LP 208,840 7,326,000 0.15%
47 PDT Partners, LLC 190,500 6,685,000 0.13%
48 Swiss National Bank 186,700 6,327,000 0.13%
49 IRONBRIDGE CAPITAL MANAGEMENT LP 175,611 6,162,000 0.12%
50 STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 152,692 5,358,000 0.11%
Page 1 of 5

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.