Institutional Ownership Gossamer Bio, Inc. (GOSS)
This table provides information about the institutional ownership of Gossamer Bio, Inc. (GOSS). We have compiled data on the 136 institutions that hold shares in the stock, with a total of 159 Million shares, which have been reported (via 13F filing form) to have a value of $307 Million.
| Holding | Report Date | shares Held | Holding Value (Reported) | Last Trade | Trade History |
|---|---|---|---|---|---|
|
Octagon Capital Advisors LP
New York, NY |
Aug 14, 2025 Q2 2025 |
18,350,000
shares
|
$35.4 Million
8.57% of portfolio
|
Q1 2025
Added 1187.72%
|
|
|
Nea Management Company, LLC
Timonium, MD |
Aug 14, 2025 Q2 2025 |
18,093,034
shares
|
$34.9 Million
1.84% of portfolio
|
Q2 2024
Added 14.24%
|
|
|
Vanguard Group Inc
Valley Forge, PA |
Aug 11, 2025 Q2 2025 |
11,410,792
shares
|
$22 Million
0.0% of portfolio
|
Q2 2025
Added 13.16%
|
|
|
Arch Venture Management, LLC
Chicago, IL |
Aug 14, 2025 Q2 2025 |
8,055,916
shares
|
$15.5 Million
5.25% of portfolio
|
Q3 2023
New holding
|
|
|
Acadian Asset Management LLC
Boston, MA |
Aug 07, 2025 Q2 2025 |
7,146,022
shares
|
$13.8 Million
0.02% of portfolio
|
Q2 2025
Added 12.39%
|
|
|
683 Capital Management, LLC
New York, NY |
Aug 14, 2025 Q2 2025 |
6,340,000
shares
|
$12.2 Million
0.61% of portfolio
|
Q2 2025
Added 3.93%
|
|
|
Samsara Bio Capital, LLC
Palo Alto, CA |
Aug 14, 2025 Q2 2025 |
6,130,268
shares
|
$11.8 Million
3.24% of portfolio
|
Q3 2023
New holding
|
|
|
Palo Alto Investors LP
Palo Alto, CA |
Aug 14, 2025 Q2 2025 |
5,739,013
shares
|
$11.1 Million
1.6% of portfolio
|
Q2 2025
Reduced 8.57%
|
|
|
Siren, L.L.C.
New York, NY |
Aug 13, 2025 Q2 2025 |
5,208,968
shares
|
$10.1 Million
0.33% of portfolio
|
Q4 2024
Reduced 60.78%
|
|
|
Silverarc Capital Management, LLC
|
Aug 14, 2025 Q2 2025 |
5,146,782
shares
|
$9.93 Million
1.53% of portfolio
|
Q2 2025
Reduced 18.57%
|
|
|
Hhlr Advisors, Ltd.
Grand Cayman, E9 |
Aug 14, 2025 Q2 2025 |
4,974,041
shares
|
$9.6 Million
0.25% of portfolio
|
Q4 2022
Reduced 32.97%
|
|
|
Geode Capital Management, LLC
Boston, MA |
Aug 08, 2025 Q2 2025 |
4,555,080
shares
|
$8.79 Million
0.0% of portfolio
|
Q2 2025
Added 100.45%
|
|
|
Alyeska Investment Group, L.P.
Chicago, IL |
Aug 14, 2025 Q2 2025 |
4,459,087
shares
|
$8.61 Million
0.02% of portfolio
|
Q2 2025
Added 7.09%
|
|
|
Ci Private Wealth, LLC
Miami, FL |
Aug 15, 2025 Q2 2025 |
3,693,683
shares
|
$7.13 Million
0.01% of portfolio
|
Q2 2025
Added 8.91%
|
|
|
Monaco Asset Management Sam
|
Aug 07, 2025 Q2 2025 |
3,550,000
shares
|
$6.85 Million
0.84% of portfolio
|
Q2 2025
Reduced 26.79%
|
|
|
Opaleye Management Inc.
Boston, MA |
Aug 15, 2025 Q2 2025 |
3,545,000
shares
|
$6.84 Million
1.04% of portfolio
|
Q2 2025
Reduced 17.32%
|
|
|
Rock Springs Capital Management LP
Baltimore, MD |
Aug 14, 2025 Q2 2025 |
3,266,960
shares
|
$6.31 Million
0.27% of portfolio
|
Q3 2023
Added 196.92%
|
|
|
Black Rock Inc.
New York, NY |
Aug 13, 2024 Q2 2024 |
2,811,507
shares
|
$5.43 Million
0.0% of portfolio
|
Q2 2024
Reduced 8.99%
|
|
|
Jim Simons
Renaissance Technologies LLC | New York, Ny
|
Aug 13, 2025 Q2 2025 |
2,732,294
shares
|
$5.27 Million
0.0% of portfolio
|
Q2 2025
Added 74.13%
|
|
|
State Street Corp
Boston, MA |
Aug 14, 2025 Q2 2025 |
2,481,406
shares
|
$4.79 Million
0.0% of portfolio
|
Q2 2025
Added 181.12%
|
|
|
Deutsche Bank Ag\
Frankfurt Am Main, 2M |
Aug 12, 2025 Q2 2025 |
2,261,455
shares
|
$4.36 Million
0.0% of portfolio
|
Q2 2025
Added 7.04%
|
|
|
Two Sigma Investments, LP
New York, NY |
Aug 14, 2025 Q2 2025 |
1,745,127
shares
|
$3.37 Million
0.0% of portfolio
|
Q2 2025
Added 36.83%
|
|
|
Eversept Partners, LP
New York, NY |
Aug 14, 2025 Q2 2025 |
1,695,762
shares
|
$3.27 Million
0.21% of portfolio
|
Q2 2025
Reduced 56.48%
|
|
|
David A. Siegel
Two Sigma Advisers, LP | New York, Ny
|
Aug 14, 2025 Q2 2025 |
1,672,200
shares
|
$3.23 Million
0.0% of portfolio
|
Q2 2025
Added 29.91%
|
|
|
Charles Schwab Investment Management Inc
San Francisco, CA |
Aug 12, 2025 Q2 2025 |
1,621,419
shares
|
$3.13 Million
0.0% of portfolio
|
Q2 2025
Added 42.36%
|