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

30 institutions reported holding $22.6M of BIOGEN INC (BIIB) in SEC 13F filings for 2026-06-30. Largest institutional holders: Czech National Bank ($9.1M), BEACON INVESTMENT ADVISORY SERVICES, INC. ($2.6M), PensionDanmark Pensionsforsikringsaktieselskab ($2.3M), STABLEFORD CAPITAL II LLC ($1.5M), GAMMA Investing LLC ($1.4M). Source: SEC Form 13F.

RankInstitutionValueSharesChange
1Czech National Bank$9.1M42,023Added
2BEACON INVESTMENT ADVISORY SERVICES, INC.$2.6M12,229Trimmed
3PensionDanmark Pensionsforsikringsaktieselskab$2.3M10,506New
4STABLEFORD CAPITAL II LLC$1.5M6,912Added
5GAMMA Investing LLC$1.4M6,462Added
6Assenagon Asset Management S.A.$1.2M5,766Trimmed
7First County Bank /CT/$849,7643,933Trimmed
8RDA Financial Network$648,1803,000Trimmed
9Trust Asset Management LLC$419,6471,617Hold
10CX Institutional$368,0001,701Trimmed
11Versant Capital Management, Inc$332,5161,539Added
12Boltwood Capital Management$321,7131,489Added
13Valeo Financial Advisors, LLC$281,0831,301New
14TRUST POINT INC.$232,9101,078New
15Israel Discount Bank of New York$227,9431,055New
16ACIMA PRIVATE WEALTH, LLC$197,911916Hold
17CoreCap Advisors, LLC$185,379858Added
18EASTERN BANK$171,984796Hold
19MassMutual Private Wealth & Trust, FSB$158,372733Trimmed
20ELEVATION WEALTH PARTNERS, LLC$48,182223Added
21Grove Bank & Trust$18,79787Trimmed
22Bangor Savings Bank$6,05028Hold
23Cedar Mountain Advisors, LLC$5,83427Hold
24HARBOR INVESTMENT ADVISORY, LLC$3,88918Hold
25MJT & Associates Financial Advisory Group, Inc.$3,24115New

Source: SEC Form 13F filings · as of 2026-06-30