GOSSAMER BIO INC (GOSS) is held by 100 institutional investors that disclose positions via SEC 13F filings. The largest disclosed holder is BlackRock, Inc. as of Q1 2026.

Are institutions buying or selling GOSS?

In Q1 2026, 64 institutions opened or increased positions in GOSSAMER BIO INC while 49 reduced or exited — a net buying quarter.

What is the Smart Money Verdict on GOSS?

The Smart Money Verdict combines four independent sources (institutional 13F activity, insider trades, activist filings, and congressional trades) into a single assessment for GOSSAMER BIO INC.

How many hedge funds hold GOSS?

100 institutional investors report holding GOSSAMER BIO INC (GOSS) as of Q1 2026, based on SEC 13F filings.

Is institutional money flowing into GOSS?

As of Q1 2026, tracked institutions in GOSSAMER BIO INC show 64 buyers versus 49 sellers — net inflows.

GOSSAMER BIO INC

GOSS·38341P102·US·Common Stock·Healthcare - Biotechnology-Activist

100

Holders

(9 Elite)

$36.2M

Total Value

57% (113)

Consensus

64 buying - 49 selling

13F: Mar 31, 2026Insider & Congress: Updated regularly

Smart Money Verdict

View all

Held by 100 funds

9 elite

Who's Trading

ActivistDED. E. Shaw Valence Portfolios, L.L.C.7.8%Jul 1, 2026

Activist68683 Capital Management, LLC10.0%Jun 11, 2026

ActivistDIDeepCurrents Investment Group LLC7.7%Jun 11, 2026

ActivistDED. E. Shaw Valence Portfolios, L.L.C.9.0%Jun 11, 2026

ActivistCOContext Capital Management, LLC9.9%Jun 9, 2026

ActivistOAOctagon Capital Advisors LP3.8%May 14, 2026

Activist

The Vanguard Group0.0%Mar 27, 2026

Activist68683 Capital Management, LLC3.9%Mar 24, 2026

ActivistGEGrowth Equity Opportunities 18 VGE, LLC1.7%Feb 24, 2026

InsiderMSMilligan SandraBuy $50KAug 19, 2025

View all insider trades View all activist filings

Fund	Action	Shares	Value	Weight	Est. P&L	Conviction
BlackRock, Inc.	Decreased	16.8M(-1.4%)	$5.5M	0.0%	-89.96%	0
AQR CAPITAL MANAGEMENT LLC	Increased	10.1M(+804.8%)	$3.3M	0.0%	-77.14%	43
VAVANGUARD CAPITAL MANAGEMENT LLC	New	9.4M	$3.1M	0.0%	-63.83%	37
BALYASNY ASSET MANAGEMENT L.P.	Increased	5.9M(+290.5%)	$1.9M	0.0%	-84.68%	42
HHLR ADVISORS, LTD.	Unchanged	5M	$1.6M	0.1%	-98.99%	0
GEODE CAPITAL MANAGEMENT, LLC	Increased	4.9M(+1.4%)	$1.6M	0.0%	-94.53%	26
Qube Research & Technologies Ltd	Increased	4.9M(+809.7%)	$1.6M	0.0%	-74.66%	41
TWO SIGMA INVESTMENTS, LP	Increased	4.8M(+40.7%)	$1.6M	0.0%	-90.34%	34
STATE STREET CORP	Decreased	4.4M(-52.9%)	$1.4M	0.0%	-93.33%	0
Corient Private Wealth LLC	Increased	4M(+3.6%)	$1.3M	0.0%	-94.37%	26
SOSquarepoint Ops LLC	Increased	3.4M(+1433.8%)	$1.1M	0.0%	-73.55%	41
BANK OF AMERICA CORP /DE/	Increased	3.2M(+66.5%)	$1M	0.0%	-90.84%	37
BARCLAYS PLC	Increased	3.1M(+431.8%)	$1M	0.0%	-78.68%	40
VPVANGUARD PORTFOLIO MANAGEMENT LLC	New	2.2M	$710,995	0.0%	-63.83%	38
AIAlyeska Investment Group, L.P.	Increased	2.1M(+125.7%)	$673,899	0.0%	-74.58%	40
UBS Group AG	Increased	1.9M(+6.3%)	$619,699	0.0%	-93.22%	26
ALLIANCEBERNSTEIN L.P.	Unchanged	190,220	$589,682	0.0%	-93.81%	0
Ensign Peak Advisors, Inc	New	1.7M	$559,148	0.0%	-63.83%	34
JACOBS LEVY EQUITY MANAGEMENT, INC	Decreased	1.7M(-22.2%)	$556,860	0.0%	-91.89%	0
MACKENZIE FINANCIAL CORP	Increased	1.5M(+401.5%)	$504,879	0.0%	-70.96%	39