Gossamer Bio
GOSS
181 hedge funds and large institutions have $56.3M invested in Gossamer Bio in 2026 Q1 according to their latest regulatory filings, with 45 funds opening new positions, 72 increasing their positions, 47 reducing their positions, and 53 closing their positions.
558% more call options, than puts
Call options by funds: $1.24M | Put options by funds: $189K
53% more repeat investments, than reductions
Existing positions increased: 72 | Existing positions reduced: 47
6% less funds holding
Funds holding: 192 → 181 (-11)
7.57% less ownership
Funds ownership: 79.92% → 72.35% (-7.6%)
15% less first-time investments, than exits
New positions opened: 45 | Existing positions closed: 53
67% less funds holding in top 10
Funds holding in top 10: 3 → 1 (-2)
90% less capital invested
Capital invested by funds: $573M → $56.3M (-$517M)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
KCM
Kalehua Capital Management
Dallas,
Texas
|
+$16.1M |
| 2 |
AQR Capital Management
Greenwich,
Connecticut
|
+$14.2M |
| 3 |
Balyasny Asset Management
Chicago,
Illinois
|
+$6.92M |
| 4 |
Qube Research & Technologies (QRT)
London,
United Kingdom
|
+$6.88M |
| 5 |
GCP
GSA Capital Partners
London,
United Kingdom
|
+$5.03M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
NMC
NEA Management Company
Timonium,
Maryland
|
-$26.9M |
| 2 |
PAI
Palo Alto Investors
Palo Alto,
California
|
-$13.9M |
| 3 |
PA
Perceptive Advisors
New York
|
-$9.73M |
| 4 |
OCA
Octagon Capital Advisors
New York
|
-$9.69M |
| 5 |
OM
Opaleye Management
Boston,
Massachusetts
|
-$8.43M |
GOSS Hedge Fund Activity: Q1 2026 in Review
181 of the 8,208 institutional investors tracked by Wall St. Rank reported a position in Gossamer Bio (GOSS) for Q1 2026, worth a combined $56.3M — down 90% from $573M a quarter earlier.
Sellers outnumbered buyers: 53 funds closed out of GOSS and 45 opened new positions — a net loss of 8 holders — while 47 trimmed existing stakes and 72 added.
The largest buyer was Kalehua Capital Management, opening a new position worth an estimated $16.1M. The largest seller was NEA Management Company, cutting an estimated $26.9M.
- 181 institutional investors held Gossamer Bio (GOSS) as of Q1 2026, down from 192 in Q4 2025.
- Funds reported $56.3M of Gossamer Bio stock for Q1 2026, down 90% quarter-over-quarter.
- 45 funds opened new Gossamer Bio positions in Q1 2026 and 53 closed out, a net change of -8 holders.
- The largest Gossamer Bio buyer in Q1 2026 was Kalehua Capital Management, an estimated $16.1M added.
- The largest Gossamer Bio seller in Q1 2026 was NEA Management Company, an estimated $26.9M sold.
Based on aggregated 13F filings for Q1 2026.