Gossamer Bio
GOSS
118 hedge funds and large institutions have $187M invested in Gossamer Bio in 2025 Q1 according to their latest regulatory filings, with 23 funds opening new positions, 35 increasing their positions, 30 reducing their positions, and 9 closing their positions.
2,407% more call options, than puts
Call options by funds: $2.93M | Put options by funds: $117K
200% more funds holding in top 10
Funds holding in top 10: 1 → 3 (+2)
156% more first-time investments, than exits
New positions opened: 23 | Existing positions closed: 9
21% more capital invested
Capital invested by funds: $155M → $187M (+$31.8M)
17% more repeat investments, than reductions
Existing positions increased: 35 | Existing positions reduced: 30
12% more funds holding
Funds holding: 105 → 118 (+13)
0.97% less ownership
Funds ownership: 75.62% → 74.65% (-0.97%)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Susquehanna International Group
Bala Cynwyd,
Pennsylvania
|
+$2.7M |
| 2 |
Acadian Asset Management
Boston,
Massachusetts
|
+$1.45M |
| 3 |
Goldman Sachs
New York
|
+$954K |
| 4 |
Arrowstreet Capital
Boston,
Massachusetts
|
+$929K |
| 5 |
AI
Atom Investors
Austin,
Texas
|
+$811K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Alyeska Investment Group
Chicago,
Illinois
|
-$5.37M |
| 2 |
PIM
Platinum Investment Management
Sydney Australia 2000,
Australia
|
-$1.67M |
| 3 |
Jacobs Levy Equity Management
Florham Park,
New Jersey
|
-$1.45M |
| 4 |
EP
Eversept Partners
New York
|
-$1.25M |
| 5 |
Millennium Management
New York
|
-$1.05M |
GOSS Hedge Fund Activity: Q1 2025 in Review
118 of the 7,458 institutional investors tracked by Wall St. Rank reported a position in Gossamer Bio (GOSS) for Q1 2025, worth a combined $187M — up 21% from $155M a quarter earlier.
Buyers outnumbered sellers: 23 funds opened new GOSS positions and 9 closed out — a net gain of 14 holders — while 35 added to existing stakes and 30 trimmed.
The largest buyer was Susquehanna International Group, adding an estimated $2.7M. The largest seller was Alyeska Investment Group, cutting an estimated $5.37M.
- 118 institutional investors held Gossamer Bio (GOSS) as of Q1 2025, up from 105 in Q4 2024.
- Funds reported $187M of Gossamer Bio stock for Q1 2025, up 21% quarter-over-quarter.
- 23 funds opened new Gossamer Bio positions in Q1 2025 and 9 closed out, a net change of +14 holders.
- The largest Gossamer Bio buyer in Q1 2025 was Susquehanna International Group, an estimated $2.7M added.
- The largest Gossamer Bio seller in Q1 2025 was Alyeska Investment Group, an estimated $5.37M sold.
Based on aggregated 13F filings for Q1 2025.