Stock Ownership/GOSS

GOSSAMER BIO INC (GOSS): Ownership & Insider Activity

Hedge funds and institutional managers reporting a position in GOSS · Health Care. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.

Reported Holders
14
13F filers
Aggregate Value
$17.0M
Across holders
Last Price
$0.17
2026-08-24
Sector
Health Care
GICS
Quarterly fund activity10 increased3 reduced0 exited
Institutional Holders of GOSS
↗
14 holders
Manager⇅Type⇅Shares⇅Market Value▼% of Total⇅% of Portfolio⇅Action⇅QoQ Change⇅Quarter⇅
SHAW D E & CO INC
CIK 0001009207
Hedge Fund40.96M$6.7M39.7%0.0%Added+$6.6MQ2 2026
AQR CAPITAL MANAGEMENT LLC
CIK 0001167557
Hedge Fund15.63M$2.6M15.2%0.0%Added+$2.6MQ2 2026
RENAISSANCE TECHNOLOGIES LLC
CIK 0001037389
Hedge Fund11.63M$1.9M11.3%0.0%Added+$1.7MQ2 2026
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
CIK 0001164508
Hedge Fund7.57M$1.2M7.3%0.0%Added—Q2 2026
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
Hedge Fund7.43M$1.2M7.2%0.0%Added+$436KQ2 2026
Qube Research & Technologies Ltd
CIK 0001729829
Hedge Fund7.07M$1.2M6.9%0.0%Added+$354KQ2 2026
HHLR ADVISORS, LTD.
CIK 0001762304
Hedge Fund4.97M$819K4.8%0.1%Unchanged+$0Q2 2026
Squarepoint Ops LLC
CIK 0001642575
Hedge Fund2.56M$421K2.5%0.0%Reduced$-139KQ2 2026
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
Hedge Fund2.40M$395K2.3%0.0%Added+$365KQ2 2026
MARSHALL WACE, LLP
CIK 0001318757
Hedge Fund2.11M$338K2.0%0.0%Added—Q2 2026
SHAW D E & CO INCAdded
Hedge Fund
$6.7M· 39.7% of total· 0.0% port· 40.96M sh· +$6.6M QoQ· Q2 2026
AQR CAPITAL MANAGEMENT LLCAdded
Hedge Fund
$2.6M· 15.2% of total· 0.0% port· 15.63M sh· +$2.6M QoQ· Q2 2026
RENAISSANCE TECHNOLOGIES LLCAdded
Hedge Fund
$1.9M· 11.3% of total· 0.0% port· 11.63M sh· +$1.7M QoQ· Q2 2026
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPAdded
Hedge Fund
$1.2M· 7.3% of total· 0.0% port· 7.57M sh· — QoQ· Q2 2026
TWO SIGMA INVESTMENTS, LPAdded
Hedge Fund
$1.2M· 7.2% of total· 0.0% port· 7.43M sh· +$436K QoQ· Q2 2026
Qube Research & Technologies LtdAdded
Hedge Fund
$1.2M· 6.9% of total· 0.0% port· 7.07M sh· +$354K QoQ· Q2 2026
HHLR ADVISORS, LTD.Unchanged
Hedge Fund
$819K· 4.8% of total· 0.1% port· 4.97M sh· +$0 QoQ· Q2 2026
Squarepoint Ops LLCReduced
Hedge Fund
$421K· 2.5% of total· 0.0% port· 2.56M sh· $-139K QoQ· Q2 2026
MILLENNIUM MANAGEMENT LLCAdded
Hedge Fund
$395K· 2.3% of total· 0.0% port· 2.40M sh· +$365K QoQ· Q2 2026
MARSHALL WACE, LLPAdded
Hedge Fund
$338K· 2.0% of total· 0.0% port· 2.11M sh· — QoQ· Q2 2026
TUDOR INVESTMENT CORP ET ALAdded
Hedge Fund
$79K· 0.5% of total· 0.0% port· 480K sh· +$60K QoQ· Q2 2026
Schonfeld Strategic Advisors LLCAdded
Hedge Fund
$22K· 0.1% of total· 0.0% port· 133K sh· — QoQ· Q2 2026
Rockefeller Capital Management L.P.Reduced
Hedge Fund
$17K· 0.1% of total· 0.0% port· 106K sh· $-17K QoQ· Q2 2026
BALYASNY ASSET MANAGEMENT LLCReduced
Hedge Fund
$17K· 0.1% of total· 0.0% port· 104K sh· $-958K QoQ· Q2 2026
1–10 of 14
1 / 2
Loading recent insider activity…
← Stock ownership