Companies / BIOGEN INC. / Institutional holders

Biogen Inc.

Institutional holders · 13F as of Mar 31, 2026

Holder	Value	Shares	% of shares
ADAGE CAPITAL PARTNERS GP, L.L.C.	$61.13M	333,457	0.23%
Man Group plc	$59.71M	339,284	0.23%
CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM	$58.22M	330,806	0.22%
Candriam S.C.A.	$58.16M	330,472	0.22%
FIL Limited	$56.24M	319,544	0.22%
Fisher Asset Management, LLC	$51.61M	293,269	0.20%
CAUSEWAY CAPITAL MANAGEMENT LLC	$51.48M	280,783	0.19%
National Pension Service	$50.55M	287,238	0.19%
RHUMBLINE ADVISERS	$50.50M	275,438	0.19%
Gotham Asset Management, LLC	$48.72M	276,809	0.19%
AEGON ASSET MANAGEMENT UK PLC	$45.79M	260,162	0.18%
Allianz Asset Management GmbH	$43.60M	247,722	0.17%
MARSHALL WACE, LLP	$42.14M	229,879	0.16%
Swedbank AB	$40.76M	231,609	0.16%
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM	$40.46M	220,687	0.15%
Artemis Investment Management LLP	$39.92M	226,845	0.15%
AllianceBernstein L.P.	$37.47M	212,897	0.14%
Renaissance Technologies LLC	$37.29M	203,396	0.14%
Hudson Bay Capital Management LP	$36.92M	201,367	0.14%
Logos Global Management LP	$35.20M	200,000	0.14%
Principal Financial Group Inc	$34.29M	187,059	0.13%
KLP KAPITALFORVALTNING AS	$33.73M	191,677	0.13%
Freestone Grove Partners LP	$33.02M	187,608	0.13%
PRUDENTIAL FINANCIAL INC	$30.05M	163,887	0.11%
Defilade Capital Management, L.P.	$28.51M	161,992	0.11%
LETKO, BROSSEAU & ASSOCIATES INC	$27.66M	150,865	0.10%
BANCO BILBAO VIZCAYA ARGENTARIA, S.A.	$25.86M	146,951	0.10%
Palo Alto Investors LP	$25.80M	140,719	0.10%
Squarepoint Ops LLC	$25.77M	146,408	0.10%
Franklin Resources, Inc.	$24.88M	141,374	0.10%
Aberdeen Group plc	$24.62M	139,878	0.09%
IEQ CAPITAL, LLC	$24.58M	139,639	0.09%
Y-Intercept (Hong Kong) Ltd	$23.68M	134,566	0.09%
TD ASSET MANAGEMENT INC	$23.33M	127,268	0.09%
SUVRETTA CAPITAL MANAGEMENT, LLC	$23.28M	132,290	0.09%
AMERIPRISE FINANCIAL INC	$23.19M	131,761	0.09%
Eurizon Capital SGR S.p.A.	$23.02M	130,813	0.09%
STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM	$22.13M	125,750	0.09%
Universal- Beteiligungs- und Servicegesellschaft mbH	$21.83M	123,736	0.08%
Perceptive Advisors LLC	$21.82M	124,000	0.08%
Portolan Capital Management, LLC	$21.72M	118,481	0.08%
CPPIB Crestone Peak Resources Canada Inc.	$21.07M	114,938	0.08%
WELLS FARGO & COMPANY/MN	$21.00M	119,338	0.08%
Russell Investments Group, Ltd.	$20.97M	119,087	0.08%
LPL Financial LLC	$20.63M	95,466	0.06%
BRAIDWELL LP	$20.36M	115,700	0.08%
Bank of Montreal	$20.01M	113,684	0.08%
O'SHAUGHNESSY ASSET MANAGEMENT, LLC	$19.41M	110,268	0.07%
Schonfeld Strategic Advisors LLC	$18.84M	107,068	0.07%
Susquehanna Portfolio Strategies, LLC	$18.68M	106,114	0.07%