s/
Stockslash
⌘K
Stocks
BIIB
Not investment advice · 13F data lagged ~45 days · Full disclaimer
BI

Biogen

BIIB13F as of Jun 30, 2026 · next update ~Nov 14
Who's buying BIIB

Top funds mostly trimmed Biogen in Q2 (Apr⁠–⁠Jun)

Buying:
FundsInsidersCongress2
3 funds$126.6M held2.1% avg. weightQ2: 0 bought / 3 sold
13F reports are a snapshot as of Jun 30, 2026; funds may have traded since. Insiders often sell for personal reasons (taxes, diversification, planned sales).
Share price · market data, not from 13F reports
Q2 2026
Congressional trading
Last 2 years · 8 disclosed trades
Members3
DateMemberTypeAmount
Sep 24, 2026
Maria Elvira Salazar
R · House · FL-27
Sold$1K–$15K
Aug 18, 2026
Kevin Hern
R · House · OK-01
Sold$1K–$15K
Jun 5, 2026
Gilbert Cisneros
D · House · CA-31
Bought$1K–$15K
Jun 2, 2026
Maria Elvira Salazar
R · House · FL-27
Sold$15K–$50K
May 12, 2026
Maria Elvira Salazar
R · House · FL-27
Bought$1K–$15K
May 11, 2026
Maria Elvira Salazar
R · House · FL-27
Bought≥ $50K
May 11, 2026
Maria Elvira Salazar
R · House · FL-27
Bought$1K–$15K
Jan 30, 2026
Gilbert Cisneros
D · House · CA-31
Bought$1K–$15K