GuruTrack
BIIB

BIIB

BIOGEN INC

Data as of 2026 Q2 (06-30) · 13F snapshot

Summary
BIOGEN INC (BIIB) is held as common stock by 4 tracked hedge-fund managers, with a combined reported value of ~$186.71M; the largest are Ken Griffin, Joel Greenblatt, Steven Cohen. 4 tracked managers also disclosed PUT or CALL positions, reported separately below. This quarter: 1 added, 3 trimmed, 1 closed. 20 public STOCK Act / OGE trade disclosures are on record. Data as of 2026 Q2, from public SEC 13F filings, delayed up to ~45 days.
Attention · MediumThis quarter · Cooling
Common-stock holders44 also report options
Congress trades20
Price$228.69vs quarter-end+5.85%
Sectors1
This quarter's moves
New0
Added1
Trimmed / sold4
Top holderKen Griffin

Common-stock positions

PUT and CALL disclosures are excluded from these holder counts and values.

PUT / CALL disclosures

Reported separately: 13F option values are not common-stock ownership and do not reveal the full strategy or economic exposure.

Ken GriffinCALL—
Value $68.06M— of portfolio315,0002026 Q2
Ken GriffinPUT—
Value $29.00M— of portfolio134,2002026 Q2
Izzy EnglanderPUT—
Value $7.52M— of portfolio34,8002026 Q2
Izzy EnglanderCALL—
Value $3.18M— of portfolio14,7002026 Q2
Paul Tudor JonesCALL—
Value $756.2K— of portfolio3,5002026 Q2
Paul Tudor JonesPUT—
Value $280.9K— of portfolio1,3002026 Q2
Steven CohenCALL—
Value $64.8K— of portfolio3002026 Q2
Steven CohenPUT—
Value $64.8K— of portfolio3002026 Q2

Insider Trading

Officers · directors · Form 4
Open-market purchases and sales (P/S)1

  • Lloyd Minor

    Director

    Sell$120.6K
    593 @ $203.34Traded 2026-08-03Filed 2026-08-05

Insider transactions are public SEC Form 4 disclosures (company officers, directors, 10% owners), for research only — not investment advice.

Public SEC 13F filings may appear up to 45 days after quarter-end; STOCK Act / OGE trade filings are generally due within 45 days but may be late. Partial data only — research, not investment advice.