BIIB institutional holders

BIOGEN INC COM · 13F, 2026Q2

Managers holding1,041
Shares held142,254,095
Reported value$30.7bn
Quarter flows126 new, 426 added, 293 trimmed, 97 exited

Top 25 holders

ManagerSharesValue% of manager's 13F
FMR LLC18,217,239$3.9bn0.2%
BlackRock, Inc.15,985,736$3.5bn0.1%
PRIMECAP MANAGEMENT CO/CA/15,154,606$3.3bn1.9%
VANGUARD CAPITAL MANAGEMENT LLC9,651,117$2.1bn0.0%
STATE STREET CORP7,344,327$1.6bn0.0%
VANGUARD PORTFOLIO MANAGEMENT LLC6,604,936$1.4bn0.1%
GEODE CAPITAL MANAGEMENT, LLC4,449,295$957.9m0.1%
WELLINGTON MANAGEMENT GROUP LLP3,117,469$673.6m0.1%
NORGES BANK2,580,033$557.4m0.1%
MORGAN STANLEY2,411,271$521.0m0.0%
AQR CAPITAL MANAGEMENT LLC1,936,859$416.9m0.1%
JPMORGAN CHASE & CO1,823,140$394.9m0.0%
Invesco Ltd.1,803,944$389.8m0.0%
Amundi1,516,831$327.7m0.1%
Legal & General Group Plc1,493,289$322.6m0.1%
NORTHERN TRUST CORP1,429,490$308.9m0.0%
Boston Partners1,263,429$272.8m0.2%
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC1,255,168$271.2m0.0%
GOLDMAN SACHS GROUP INC1,230,390$265.8m0.0%
DIMENSIONAL FUND ADVISORS LP1,148,568$248.2m0.0%
Pacer Advisors, Inc.1,122,981$242.6m0.6%
CHARLES SCHWAB INVESTMENT MANAGEMENT INC1,117,663$241.5m0.0%
BANK OF AMERICA CORP /DE/1,116,228$241.2m0.0%
UBS Group AG1,030,150$222.6m0.0%
Alyeska Investment Group, L.P.932,374$201.4m0.5%

Every holder, line by line, and the full history since 2013: yf.Client().holders("BIIB"). BIIB price history · All 13F data

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