Data from public SEC 13F & STOCK Act filings, delayed up to ~45 days, partial holdings only — for research, not investment advice.
GOSS
GOSSAMER BIO INCData as of 2026 Q1 (03-31) · 13F snapshot
Summary
GOSSAMER BIO INC (GOSS) is held by 6 tracked hedge-fund managers, a combined reported value of ~$23.77M; the largest are Seth Klarman, Ken Griffin, Izzy Englander. This quarter: 1 added, 1 trimmed, 1 closed. Data as of 2026 Q1, from public SEC 13F filings, delayed up to ~45 days.
Attention · MediumThis quarter · Quiet
Gurus holding6
Congress trades0
Price$0.16vs quarter-end-50.79%
Sectors0
This quarter's moves
Top holderSeth KlarmanNew0
Added1
Trimmed / sold2
Value $1.87M— of portfolio215,0002022 Q1
Zhang LeiHold
Value $1.63M0.1% of portfolio4,974,0412026 Q1
Value $1.20M— of portfolio100,0002022 Q3
Value $387.5K— of portfolio125,0002025 Q4
Value $72.3K— of portfolio220,1002026 Q1
Value $56.2K— of portfolio171,2002026 Q1
| Investor | Value | % of portfolio | Action |
|---|---|---|---|
| Izzy EnglanderCALL | $1.87M | — | — |
| Zhang Lei | $1.63M | 0.1% | Hold |
| Steven CohenPUT | $1.20M | — | — |
| Steven CohenCALL | $387.5K | — | — |
| Ken GriffinCALL | $72.3K | — | — |
| Ken GriffinPUT | $56.2K | — | — |