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

Institutional Holders (2014Q1)
Portfolio Summary: 799 Institutional holders with a total value of $67,510,678,520.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 FMR LLC 21,925,328 6,706,300,000 9.93%
2 PRIMECAP MANAGEMENT CO/CA/ 17,502,106 5,353,369,000 7.93%
3 PRICE T ROWE ASSOCIATES INC /MD/ 12,178,149 3,724,930,000 5.52%
4 VANGUARD GROUP INC 11,899,130 3,639,587,000 5.39%
5 STATE STREET CORP 9,546,674 2,920,042,000 4.33%
6 Capital Research Global Investors 8,543,550 2,613,216,000 3.87%
7 Clearbridge Investments, LLC 7,703,484 2,356,265,000 3.49%
8 JENNISON ASSOCIATES LLC 6,337,153 1,938,345,000 2.87%
9 JPMORGAN CHASE & CO 6,184,950 1,891,792,000 2.80%
10 BlackRock Institutional Trust Company, N.A. 6,146,839 1,880,134,000 2.78%
11 SANDS CAPITAL MANAGEMENT, LLC 4,873,017 1,490,510,000 2.21%
12 Invesco Ltd. 4,051,684 1,239,288,000 1.84%
13 BlackRock Fund Advisors 3,870,858 1,183,979,000 1.75%
14 NORTHERN TRUST CORP 3,305,716 1,011,119,000 1.50%
15 Bank of New York Mellon Corp 3,252,651 994,886,000 1.47%
16 TIAA CREF INVESTMENT MANAGEMENT LLC 2,933,029 897,126,000 1.33%
17 AMERIPRISE FINANCIAL INC 2,642,124 808,150,000 1.20%
18 WELLINGTON MANAGEMENT GROUP LLP 2,641,911 808,081,000 1.20%
19 WADDELL & REED FINANCIAL INC 2,568,134 785,515,000 1.16%
20 MARSICO CAPITAL MANAGEMENT LLC 2,485,659 760,289,000 1.13%
21 WELLS FARGO & COMPANY/MN 2,409,971 737,116,000 1.09%
22 FRANKLIN RESOURCES INC 2,282,453 698,132,000 1.03%
23 JANUS HENDERSON INVESTORS US LLC 2,211,380 676,391,000 1.00%
24 BlackRock Group LTD 2,182,672 667,614,000 0.99%
25 Winslow Capital Management, LLC 2,120,998 648,749,000 0.96%
26 GEODE CAPITAL MANAGEMENT, LLC 1,807,617 552,668,000 0.82%
27 UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 1,764,066 539,575,000 0.80%
28 NORGES BANK 1,671,668 511,313,000 0.76%
29 ALLIANCEBERNSTEIN L.P. 1,597,709 488,691,000 0.72%
30 BLACKROCK ADVISORS LLC 1,460,482 446,717,000 0.66%
31 COLUMBUS CIRCLE INVESTORS 1,332,565 407,592,000 0.60%
32 MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 1,322,693 404,572,108 0.60%
33 SUSQUEHANNA INTERNATIONAL GROUP, LLP 1,322,000 404,360,000 0.60% Put
34 MONTAG & CALDWELL, LLC 1,240,736 379,504,000 0.56%
35 GOLDMAN SACHS GROUP INC 1,237,049 378,376,000 0.56%
36 OppenheimerFunds, Inc. 1,231,010 376,529,000 0.56%
37 MANAGED ACCOUNT ADVISORS LLC 1,132,281 346,330,000 0.51%
38 ORBIMED ADVISORS LLC 1,060,700 324,436,000 0.48%
39 SUSQUEHANNA INTERNATIONAL GROUP, LLP 1,028,700 314,649,000 0.47% Call
40 Allianz Asset Management GmbH 1,005,483 307,547,000 0.46%
41 Legal & General Group Plc 994,809 304,282,000 0.45%
42 BANK OF AMERICA CORP /DE/ 990,753 303,041,000 0.45%
43 AMERICAN CENTURY COMPANIES INC 958,847 293,283,000 0.43%
44 PRUDENTIAL FINANCIAL INC 903,386 276,318,000 0.41%
45 DEUTSCHE BANK AG\ 896,493 274,204,000 0.41%
46 MORGAN STANLEY 798,262 244,164,000 0.36%
47 NEW YORK STATE COMMON RETIREMENT FUND 790,507 241,792,000 0.36%
48 CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM 821,756 234,956,000 0.35%
49 AJO, LP 760,020 232,467,000 0.34%
50 BlackRock Investment Management, LLC 743,988 227,564,000 0.34%
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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.