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BIOGEN INC
BIOGEN INC. Institutional holdings reported to the SEC.

Institutional Holders (2016Q1)
Portfolio Summary: 983 Institutional holders with a total value of $51,245,429,753.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 PRIMECAP MANAGEMENT CO/CA/ 16,246,726 4,229,348,000 8.25%
2 FMR LLC 13,493,064 3,512,514,000 6.85%
3 VANGUARD GROUP INC 13,361,902 3,478,370,000 6.79%
4 STATE STREET CORP 8,928,855 2,324,346,000 4.54%
5 Clearbridge Investments, LLC 8,465,459 2,203,728,000 4.30%
6 PRICE T ROWE ASSOCIATES INC /MD/ 8,119,909 2,113,775,000 4.12%
7 BlackRock Institutional Trust Company, N.A. 5,766,052 1,501,019,000 2.93%
8 BlackRock Fund Advisors 4,771,738 1,242,179,000 2.42%
9 WELLINGTON MANAGEMENT GROUP LLP 4,658,269 1,212,640,000 2.37%
10 AMERIPRISE FINANCIAL INC 4,097,151 1,066,572,000 2.08%
11 JPMORGAN CHASE & CO 3,785,227 985,371,000 1.92%
12 Invesco Ltd. 3,615,548 941,200,000 1.84%
13 JENNISON ASSOCIATES LLC 3,465,274 902,080,000 1.76%
14 ALLIANCEBERNSTEIN L.P. 3,162,932 823,374,000 1.61%
15 SANDS CAPITAL MANAGEMENT, LLC 3,141,109 817,694,000 1.60%
16 Jackson Square Partners, LLC 2,809,422 806,152,000 1.57%
17 NORTHERN TRUST CORP 3,002,980 781,735,000 1.53%
18 Bank of New York Mellon Corp 2,692,260 700,849,000 1.37%
19 D. E. Shaw & Co., Inc. 2,228,217 580,049,000 1.13%
20 FRANKLIN RESOURCES INC 2,067,319 538,170,000 1.05%
21 BlackRock Group LTD 2,011,254 523,568,000 1.02%
22 GEODE CAPITAL MANAGEMENT, LLC 1,995,002 518,399,000 1.01%
23 BANK OF AMERICA CORP /DE/ 1,925,188 501,165,000 0.98%
24 NORGES BANK 1,816,599 472,897,000 0.92%
25 OppenheimerFunds, Inc. 1,646,252 428,538,000 0.84%
26 TIAA CREF INVESTMENT MANAGEMENT LLC 1,528,077 397,789,000 0.78%
27 ORBIMED ADVISORS LLC 1,526,300 397,326,000 0.78%
28 SUSQUEHANNA INTERNATIONAL GROUP, LLP 1,518,400 395,270,000 0.77% Put
29 GOLDMAN SACHS GROUP INC 1,438,109 374,370,000 0.73%
30 AMERICAN CENTURY COMPANIES INC 1,303,230 339,257,000 0.66%
31 WADDELL & REED FINANCIAL INC 1,269,482 330,472,000 0.64%
32 DEUTSCHE BANK AG\ 1,241,558 323,197,000 0.63%
33 UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 1,124,950 292,847,000 0.57%
34 MORGAN STANLEY 1,077,432 280,478,000 0.55%
35 BLACKROCK ADVISORS LLC 1,070,047 278,555,000 0.54%
36 SUSQUEHANNA INTERNATIONAL GROUP, LLP 1,027,400 267,452,000 0.52% Call
37 MACQUARIE GROUP LTD 997,758 259,737,000 0.51%
38 Legal & General Group Plc 970,581 252,656,000 0.49%
39 JANUS HENDERSON INVESTORS US LLC 898,060 233,834,000 0.46%
40 Allianz Asset Management GmbH 858,552 223,498,000 0.44%
41 WELLS FARGO & COMPANY/MN 835,033 217,377,000 0.42%
42 MILLENNIUM MANAGEMENT LLC 830,983 216,321,000 0.42%
43 BlackRock Investment Management, LLC 808,975 210,592,000 0.41%
44 PRUDENTIAL FINANCIAL INC 785,214 204,406,000 0.40%
45 PARAMETRIC PORTFOLIO ASSOCIATES LLC 772,397 201,070,000 0.39%
46 FRED ALGER MANAGEMENT, LLC 707,903 184,282,000 0.36%
47 Sumitomo Mitsui Trust Group, Inc. 677,502 176,367,000 0.34%
48 MANUFACTURERS LIFE INSURANCE COMPANY, THE 688,196 174,926,000 0.34%
49 CREDIT SUISSE AG/ 650,658 169,381,000 0.33%
50 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 633,567 164,931,000 0.32%
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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.