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

Institutional Holders (2014Q4)
Portfolio Summary: 907 Institutional holders with a total value of $74,388,122,381.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 FMR LLC 19,788,113 6,717,074,000 9.03%
2 PRIMECAP MANAGEMENT CO/CA/ 17,170,693 5,828,592,000 7.84%
3 VANGUARD GROUP INC 12,730,694 4,321,434,000 5.81%
4 PRICE T ROWE ASSOCIATES INC /MD/ 12,176,548 4,133,329,000 5.56%
5 STATE STREET CORP 10,105,791 3,430,422,000 4.61%
6 Clearbridge Investments, LLC 8,231,670 2,794,241,000 3.76%
7 JPMORGAN CHASE & CO 6,974,966 2,367,652,000 3.18%
8 BlackRock Institutional Trust Company, N.A. 6,266,811 2,127,269,000 2.86%
9 JENNISON ASSOCIATES LLC 5,619,663 1,907,595,000 2.56%
10 SANDS CAPITAL MANAGEMENT, LLC 4,974,331 1,688,537,000 2.27%
11 BlackRock Fund Advisors 4,534,594 1,539,268,000 2.07%
12 Bank of New York Mellon Corp 3,358,853 1,140,554,000 1.53%
13 Invesco Ltd. 3,342,751 1,134,697,000 1.53%
14 NORTHERN TRUST CORP 3,145,256 1,067,657,000 1.44%
15 WADDELL & REED FINANCIAL INC 2,900,674 984,633,000 1.32%
16 AMERIPRISE FINANCIAL INC 2,769,523 940,112,000 1.26%
17 WELLS FARGO & COMPANY/MN 2,711,313 920,358,000 1.24%
18 JANUS HENDERSON INVESTORS US LLC 2,679,722 909,683,000 1.22%
19 WELLINGTON MANAGEMENT GROUP LLP 2,535,845 860,792,000 1.16%
20 BlackRock Group LTD 2,195,060 745,113,000 1.00%
21 FRANKLIN RESOURCES INC 2,126,484 721,838,000 0.97%
22 TIAA CREF INVESTMENT MANAGEMENT LLC 2,072,866 703,634,000 0.95%
23 Capital World Investors 1,710,500 665,658,000 0.89%
24 AMERICAN CENTURY COMPANIES INC 1,910,158 648,403,000 0.87%
25 Winslow Capital Management, LLC 1,909,997 648,348,000 0.87%
26 GEODE CAPITAL MANAGEMENT, LLC 1,861,665 631,165,000 0.85%
27 GOLDMAN SACHS GROUP INC 1,802,529 611,869,000 0.82%
28 NORGES BANK 1,645,805 558,669,000 0.75%
29 MARSICO CAPITAL MANAGEMENT LLC 1,607,156 545,549,000 0.73%
30 ALLIANCEBERNSTEIN L.P. 1,576,365 535,097,000 0.72%
31 MORGAN STANLEY 1,568,496 532,425,000 0.72%
32 OppenheimerFunds, Inc. 1,523,240 517,064,000 0.70%
33 SUSQUEHANNA INTERNATIONAL GROUP, LLP 1,517,200 515,014,000 0.69% Put
34 ORBIMED ADVISORS LLC 1,494,700 507,376,000 0.68%
35 MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 1,446,949 491,166,837 0.66%
36 SUSQUEHANNA INTERNATIONAL GROUP, LLP 1,260,800 427,979,000 0.58% Call
37 UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 1,224,670 415,714,000 0.56%
38 AQR CAPITAL MANAGEMENT LLC 1,201,289 407,778,000 0.55%
39 MANAGED ACCOUNT ADVISORS LLC 1,037,556 352,198,000 0.47%
40 DEUTSCHE BANK AG\ 949,917 322,444,000 0.43%
41 Legal & General Group Plc 940,927 319,407,000 0.43%
42 MONTAG & CALDWELL, LLC 923,072 313,337,000 0.42%
43 DSM CAPITAL PARTNERS LLC 898,165 304,883,000 0.41%
44 PRUDENTIAL FINANCIAL INC 830,694 281,980,000 0.38%
45 Allianz Asset Management GmbH 829,459 281,559,000 0.38%
46 CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM 741,610 265,415,000 0.36%
47 NEW YORK STATE COMMON RETIREMENT FUND 781,758 265,368,000 0.36%
48 BLACKROCK ADVISORS LLC 780,187 264,835,000 0.36%
49 ROYAL LONDON ASSET MANAGEMENT LTD 74,491 254,934,000 0.34%
50 BlackRock Finance, Inc. 718,748 243,979,000 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.