Who Owns BIIB (BIIB)? -- Institutional Holders (2026-06-30)

1,135 institutions reported holding $32.11B of BIIB (BIIB) in SEC 13F filings for 2026-06-30. Largest institutional holders: FMR LLC ($3.94B), VANGUARD GROUP INC ($3.84B), BlackRock, Inc. ($3.45B), PRIMECAP MANAGEMENT CO/CA/ ($3.27B), STATE STREET CORP ($1.59B). Source: SEC Form 13F.

RankInstitutionValueSharesChange
1FMR LLC$3.94B18.2MAdded
2VANGUARD GROUP INC$3.84B17.8MAdded
3BlackRock, Inc.$3.45B16.0MAdded
4PRIMECAP MANAGEMENT CO/CA/$3.27B15.2MAdded
5STATE STREET CORP$1.59B7.3MAdded
6GEODE CAPITAL MANAGEMENT, LLC$957.9M4.4MAdded
7WELLINGTON MANAGEMENT GROUP LLP$673.6M3.1MAdded
8NORGES BANK$557.4M2.6MTrimmed
9MORGAN STANLEY$521.0M2.4MAdded
10AQR CAPITAL MANAGEMENT LLC$416.9M1.9MAdded
11JPMORGAN CHASE & CO$394.9M1.8MTrimmed
12Invesco Ltd.$389.8M1.8MAdded
13SUSQUEHANNA INTERNATIONAL GROUP, LLP$356.0M1.6MAdded
14UBS Group AG$331.3M1.5MAdded
15Amundi$327.7M1.5MAdded
16Legal & General Group Plc$322.6M1.5MAdded
17NORTHERN TRUST CORP$308.9M1.4MTrimmed
18GOLDMAN SACHS GROUP INC$274.5M1.3MAdded
19Boston Partners$272.8M1.3MTrimmed
20UBS AM, A DISTINCT BUSINESS UNIT OF UBS ASSET MANAGEMENT AMERICAS LLC$271.2M1.3MTrimmed
21DIMENSIONAL FUND ADVISORS LP$248.2M1.1MAdded
22Pacer Advisors, Inc.$242.6M1.1MAdded
23Sixth Street Partners Management Company, L.P.$241.5M1.1MNew
24CHARLES SCHWAB INVESTMENT MANAGEMENT INC$241.5M1.1MTrimmed
25BANK OF AMERICA CORP /DE/$241.2M1.1MTrimmed

来源：SEC 13F 申报文件 · 截至 2026-06-30