GOSS

GOSSAMER BIO INC

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

Summary

GOSSAMER BIO INC (GOSS) is held as common stock by 4 tracked hedge-fund managers, with a combined reported value of ~$3.21M; the largest are Renaissance Technologies, Zhang Lei, Izzy Englander. 1 tracked manager also disclosed PUT or CALL positions, reported separately below. This quarter: 3 added. Data as of 2026 Q2, from public SEC 13F filings, delayed up to ~45 days.

Attention · MediumThis quarter · Heating up

Common-stock holders41 also report options

Congress trades0

Price$11.58vs quarter-end+6935.24%

Sectors0

This quarter's moves

New0

Added3

Trimmed / sold0

Top holder

Renaissance Technologies

Common-stock positions

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

Zhang LeiHold

Value $818.7K0.1% of portfolio4,974,0412026 Q2

Investor	Period	Value	Shares	% of portfolio	Action
Zhang Lei	2026 Q2	$818.7K	4,974,041	0.1%	Hold

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 $25.8K— of portfolio156,6002026 Q2

Ken GriffinPUT—

Value $12.2K— of portfolio74,0002026 Q2

Investor	Period	Value	Shares	% of portfolio	Action
Ken GriffinCALL	2026 Q2	$25.8K	156,600	—	—
Ken GriffinPUT	2026 Q2	$12.2K	74,000	—	—

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.