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

Institutional Holders (2015Q1)
Portfolio Summary: 978 Institutional holders with a total value of $91,796,227,254.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 FMR LLC 22,041,151 9,306,655,000 10.14%
2 PRIMECAP MANAGEMENT CO/CA/ 16,558,763 6,991,772,000 7.62%
3 VANGUARD GROUP INC 13,142,336 5,549,219,000 6.05%
4 PRICE T ROWE ASSOCIATES INC /MD/ 10,791,562 4,556,629,000 4.96%
5 STATE STREET CORP 9,785,190 4,131,697,000 4.50%
6 Clearbridge Investments, LLC 8,025,241 3,388,578,000 3.69%
7 BlackRock Institutional Trust Company, N.A. 6,220,983 2,626,748,000 2.86%
8 JPMORGAN CHASE & CO 5,853,035 2,471,384,000 2.69%
9 JENNISON ASSOCIATES LLC 5,095,601 2,151,567,000 2.34%
10 SANDS CAPITAL MANAGEMENT, LLC 5,009,615 2,115,260,000 2.30%
11 BlackRock Fund Advisors 4,407,782 1,861,142,000 2.03%
12 Invesco Ltd. 3,559,467 1,502,950,000 1.64%
13 WELLINGTON MANAGEMENT GROUP LLP 3,467,280 1,464,025,000 1.59%
14 AMERIPRISE FINANCIAL INC 3,235,509 1,366,109,000 1.49%
15 Bank of New York Mellon Corp 3,216,860 1,358,806,000 1.48%
16 NORTHERN TRUST CORP 3,120,851 1,317,748,000 1.44%
17 WADDELL & REED FINANCIAL INC 2,668,407 1,126,708,000 1.23%
18 WELLS FARGO & COMPANY/MN 2,408,190 1,016,800,000 1.11%
19 FRANKLIN RESOURCES INC 2,293,607 968,447,000 1.05%
20 JANUS HENDERSON INVESTORS US LLC 2,180,277 920,672,000 1.00%
21 BlackRock Group LTD 2,143,370 905,017,000 0.99%
22 GEODE CAPITAL MANAGEMENT, LLC 1,916,624 808,066,000 0.88%
23 Winslow Capital Management, LLC 1,902,328 803,238,000 0.88%
24 MARSICO CAPITAL MANAGEMENT LLC 1,818,871 768,001,000 0.84%
25 ALLIANCEBERNSTEIN L.P. 1,729,597 730,305,000 0.80%
26 AMERICAN CENTURY COMPANIES INC 1,680,454 709,555,000 0.77%
27 TIAA CREF INVESTMENT MANAGEMENT LLC 1,670,983 705,556,000 0.77%
28 NORGES BANK 1,650,587 696,944,000 0.76%
29 Capital World Investors 1,523,700 643,367,000 0.70%
30 MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 1,494,392 630,992,078 0.69%
31 OppenheimerFunds, Inc. 1,402,900 592,361,000 0.65%
32 SUSQUEHANNA INTERNATIONAL GROUP, LLP 1,378,300 581,973,000 0.63% Put
33 MORGAN STANLEY 1,317,915 556,477,000 0.61%
34 GOLDMAN SACHS GROUP INC 1,264,485 533,916,000 0.58%
35 ORBIMED ADVISORS LLC 1,206,800 509,559,000 0.56%
36 UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 1,171,479 494,644,000 0.54%
37 DEUTSCHE BANK AG\ 1,106,605 467,249,000 0.51%
38 MANAGED ACCOUNT ADVISORS LLC 1,062,385 448,581,000 0.49%
39 Jackson Square Partners, LLC 1,038,322 438,421,000 0.48%
40 Legal & General Group Plc 937,819 395,994,000 0.43%
41 D. E. Shaw & Co., Inc. 912,933 385,477,000 0.42%
42 Allianz Asset Management GmbH 891,872 376,585,000 0.41%
43 FRED ALGER MANAGEMENT, LLC 852,902 360,129,000 0.39%
44 MONTAG & CALDWELL, LLC 840,440 354,868,000 0.39%
45 AQR CAPITAL MANAGEMENT LLC 834,245 352,252,000 0.38%
46 PRUDENTIAL FINANCIAL INC 797,374 336,683,000 0.37%
47 DSM CAPITAL PARTNERS LLC 780,018 329,355,000 0.36%
48 SUSQUEHANNA INTERNATIONAL GROUP, LLP 771,600 325,800,000 0.35% Call
49 NEW YORK STATE COMMON RETIREMENT FUND 757,354 319,785,000 0.35%
50 BLACKROCK ADVISORS LLC 725,128 306,178,000 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.