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

Institutional Holders (2015Q2)
Portfolio Summary: 980 Institutional holders with a total value of $87,219,666,325.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 FMR LLC 21,738,394 8,781,007,000 10.07%
2 PRIMECAP MANAGEMENT CO/CA/ 16,501,541 6,665,632,000 7.64%
3 VANGUARD GROUP INC 13,381,395 5,405,281,000 6.20%
4 PRICE T ROWE ASSOCIATES INC /MD/ 10,473,787 4,230,782,000 4.85%
5 STATE STREET CORP 9,502,785 3,838,619,000 4.40%
6 Clearbridge Investments, LLC 8,001,867 3,232,274,000 3.71%
7 BlackRock Institutional Trust Company, N.A. 6,069,248 2,451,612,000 2.81%
8 JPMORGAN CHASE & CO 4,960,431 2,003,714,000 2.30%
9 JENNISON ASSOCIATES LLC 4,848,097 1,958,340,000 2.25%
10 WELLINGTON MANAGEMENT GROUP LLP 4,834,187 1,952,721,000 2.24%
11 SANDS CAPITAL MANAGEMENT, LLC 4,732,945 1,911,826,000 2.19%
12 BlackRock Fund Advisors 4,623,009 1,867,418,000 2.14%
13 Invesco Ltd. 3,280,391 1,325,081,000 1.52%
14 Bank of New York Mellon Corp 3,100,414 1,252,383,000 1.44%
15 NORTHERN TRUST CORP 2,852,624 1,152,289,000 1.32%
16 AMERIPRISE FINANCIAL INC 2,613,987 1,055,896,000 1.21%
17 WADDELL & REED FINANCIAL INC 2,395,107 967,479,000 1.11%
18 WELLS FARGO & COMPANY/MN 2,229,360 900,532,000 1.03%
19 FRANKLIN RESOURCES INC 2,226,442 899,350,000 1.03%
20 JANUS HENDERSON INVESTORS US LLC 2,219,510 896,474,000 1.03%
21 BlackRock Group LTD 2,154,179 870,159,000 1.00%
22 TIAA CREF INVESTMENT MANAGEMENT LLC 2,141,512 865,042,000 0.99%
23 GEODE CAPITAL MANAGEMENT, LLC 1,929,721 778,016,000 0.89%
24 ALLIANCEBERNSTEIN L.P. 1,830,976 739,604,000 0.85%
25 Jackson Square Partners, LLC 1,819,169 734,835,000 0.84%
26 NORGES BANK 1,676,323 677,134,000 0.78%
27 SUSQUEHANNA INTERNATIONAL GROUP, LLP 1,639,400 662,219,000 0.76% Put
28 Capital World Investors 1,577,679 637,288,000 0.73%
29 OppenheimerFunds, Inc. 1,567,360 633,119,000 0.73%
30 MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 1,557,426 629,106,658 0.72%
31 GOLDMAN SACHS GROUP INC 1,433,698 579,127,000 0.66%
32 AMERICAN CENTURY COMPANIES INC 1,338,718 540,762,000 0.62%
33 MORGAN STANLEY 1,296,650 523,770,000 0.60%
34 Winslow Capital Management, LLC 1,288,414 520,441,000 0.60%
35 MARSICO CAPITAL MANAGEMENT LLC 1,282,348 517,991,000 0.59%
36 ORBIMED ADVISORS LLC 1,278,900 516,599,000 0.59%
37 UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 1,166,412 471,160,000 0.54%
38 DEUTSCHE BANK AG\ 1,106,321 446,882,000 0.51%
39 Allianz Asset Management GmbH 1,013,179 409,425,000 0.47%
40 AQR CAPITAL MANAGEMENT LLC 996,444 402,504,000 0.46%
41 Legal & General Group Plc 948,865 383,280,000 0.44%
42 MILLENNIUM MANAGEMENT LLC 920,090 371,661,000 0.43%
43 FRED ALGER MANAGEMENT, LLC 871,995 352,234,000 0.40%
44 MANAGED ACCOUNT ADVISORS LLC 866,664 350,081,000 0.40%
45 DSM CAPITAL PARTNERS LLC 856,614 346,022,000 0.40%
46 BLACKROCK ADVISORS LLC 802,850 324,303,000 0.37%
47 PRUDENTIAL FINANCIAL INC 765,954 309,400,000 0.35%
48 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 707,562 285,813,000 0.33%
49 SUSQUEHANNA INTERNATIONAL GROUP, LLP 706,291 285,299,000 0.33%
50 PUTNAM INVESTMENTS LLC 703,276 284,081,000 0.33%
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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.