GOSSAMER BIO INC

$GOSS
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Smart money positioned

6 of the Top-200 alpha managers hold $GOSS as of the latest 13F snapshot.

13F holders
190
Insider buys · 90d
0
Congress · 90d
0

Smart Money · top-200 alpha cohort

6 holders · Q1 2026

$GOSS is held by 6 managers from the Top-Performer cohort as of Q1 2026. Position weights range from 0.00% to 0.01%, with an average of 0.00% of portfolio. Largest holder: Quarry LP at 0.01%. A weekly Smart-Money commentary for this ticker has not been generated yet this batch — the table below shows the full cohort positioning.

01
Quarry LP
0.01% held
α +10.6pts
02
ADAR1 Capital Management, LLC
0.01% held
α +74.0pts
03
Connor, Clark & Lunn Investment Management Ltd.
0.00% held
α +12.3pts
04
Caption Management, LLC
0.00% held
α +15.5pts
05
Citigroup Inc.
0.00% held
α +26.3pts

Smart Money shows holdings from our Top-Performer cohort — the 200 highest-alpha manager_13f funds in our universe. Position weight (current quarter) and QoQ delta versus prior quarter. α is the manager's annual alpha vs benchmark.

Institutional holders

Top 10 of 190 · Source: 13F-HR
01
Mpm Asset Management LLC
0.39% of portfolio
16,111,832 sh
02
State Street
—
9,310,969 sh
03
Chiron Capital Management, LLC
0.28% of portfolio
7,750,000 sh
04
Castleview Partners, LLC
0.23% of portfolio
7,222,559 sh
05
Samsara BioCapital, LLC
2.11% of portfolio
6,130,268 sh
06
Siemens Pension Trust E V
—
5,922,298 sh
07
Campbell Newman Asset Management Inc.
—
5,277,904 sh
08
GSG Advisors LLC
0.05% of portfolio
5,208,968 sh
09
Laurion Capital Management LP
0.09% of portfolio
5,000,000 sh
10
Hhlr Advisors, Ltd.
0.32% of portfolio
4,974,041 sh
See all 190 13F holders · Pro →

Insider activity · last 90 days

1 transactions · 1 filers
19 Aug 2025
Milligan Sandra —
▲ BOUGHT
26,050
$1.92
P

Transaction codes: P open-market purchase · S sale · M option exercise · A grant · F tax-withhold sale. Insider names link to each individual's expert page.

Congress trades · last 90 days

No Congress trades

No STOCK Act filings reference $GOSS in the recent window.

Source data: SEC EDGAR · 13F-HR · Form 4 · U.S. House Clerk PTR (disclosures-clerk.house.gov) · Senate eFD (senate.gov) · Last refreshed 07:14 UTC.