BIIB
BIOGEN INCData 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$227.07vs quarter-end+5.10%
Sectors1
This quarter's moves
Top holderNew0
Added1
Trimmed / sold4
Ken GriffinCommon-stock positions
PUT and CALL disclosures are excluded from these holder counts and values.
| Investor | Value | % of portfolio | Action |
|---|
PUT / CALL disclosures
Reported separately: 13F option values are not common-stock ownership and do not reveal the full strategy or economic exposure.
Value $68.06M— of portfolio315,0002026 Q2
Value $29.00M— of portfolio134,2002026 Q2
Value $7.52M— of portfolio34,8002026 Q2
Value $3.18M— of portfolio14,7002026 Q2
Value $756.2K— of portfolio3,5002026 Q2
Value $280.9K— of portfolio1,3002026 Q2
Value $64.8K— of portfolio3002026 Q2
Value $64.8K— of portfolio3002026 Q2
| Investor | Value | % of portfolio | Action |
|---|---|---|---|
| Ken GriffinCALL | $68.06M | — | — |
| Ken GriffinPUT | $29.00M | — | — |
| Izzy EnglanderPUT | $7.52M | — | — |
| Izzy EnglanderCALL | $3.18M | — | — |
| Paul Tudor JonesCALL | $756.2K | — | — |
| Paul Tudor JonesPUT | $280.9K | — | — |
| Steven CohenCALL | $64.8K | — | — |
| Steven CohenPUT | $64.8K | — | — |
Insider Trading
Officers · directors · Form 4Open-market purchases and sales (P/S)1
Lloyd Minor
Director
Sell$120.6K593 @ $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.