Data from public SEC 13F & STOCK Act filings, delayed up to ~45 days, partial holdings only — for research, not investment advice.
IONS
IONIS PHARMACEUTICALS INCData as of 2026 Q1 (03-31) · 13F snapshot
Summary
IONIS PHARMACEUTICALS INC (IONS) is held by 7 tracked hedge-fund managers, a combined reported value of ~$266.14M; the largest are Izzy Englander, Ken Griffin, Renaissance Technologies. This quarter: 3 added, 2 trimmed, 1 closed. 4 members of Congress have disclosed STOCK Act trades. Data as of 2026 Q1, from public SEC 13F filings, delayed up to ~45 days.
Attention · MediumThis quarter · Mixed
Gurus holding7
Congress trades4
Price$73.28vs quarter-end-2.42%
Sectors0
This quarter's moves
Top holderIzzy EnglanderNew0
Added3
Trimmed / sold3
Value $18.64M— of portfolio248,3002026 Q1
Value $12.85M— of portfolio200,0002019 Q2
Value $8.66M— of portfolio115,3002026 Q1
Value $4.50M— of portfolio100,0002021 Q1
Value $1.50M— of portfolio20,0002026 Q1
Value $1.28M— of portfolio17,1002026 Q1
| Investor | Value | % of portfolio | Action |
|---|---|---|---|
| Ken GriffinPUT | $18.64M | — | — |
| Izzy EnglanderPUT | $12.85M | — | — |
| Ken GriffinCALL | $8.66M | — | — |
| Izzy EnglanderCALL | $4.50M | — | — |
| Steven CohenCALL | $1.50M | — | — |
| Steven CohenPUT | $1.28M | — | — |