Abivax
ABVX
46 hedge funds and large institutions have $199M invested in Abivax in 2025 Q1 according to their latest regulatory filings, with 8 funds opening new positions, 18 increasing their positions, 11 reducing their positions, and 10 closing their positions.
64% more repeat investments, than reductions
Existing positions increased: 18 | Existing positions reduced: 11
2.94% more ownership
Funds ownership: 47.14% → 50.08% (+2.9%)
0% more funds holding in top 10
Funds holding in top 10: 4 → 4 (0)
4% less funds holding
Funds holding: 48 → 46 (-2)
9% less capital invested
Capital invested by funds: $219M → $199M (-$20.1M)
20% less first-time investments, than exits
New positions opened: 8 | Existing positions closed: 10
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
OCA
Octagon Capital Advisors
New York
|
+$8.32M |
| 2 |
ACM
ADAR1 Capital Management
Austin,
Texas
|
+$4.71M |
| 3 |
Citadel Advisors
Miami,
Florida
|
+$3.51M |
| 4 |
CP
Caligan Partners
New York
|
+$3.5M |
| 5 |
AI
Allostery Investments
Stamford,
Connecticut
|
+$3.44M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
CC
Commodore Capital
New York
|
-$9.4M |
| 2 |
Blackstone Inc
New York
|
-$6.86M |
| 3 |
SB
Samsara BioCapital
Palo Alto,
California
|
-$2.88M |
| 4 |
SFAM
Springhill Fund Asset Management
Hong Kong
|
-$1.52M |
| 5 |
ACM
Atika Capital Management
New York
|
-$761K |
ABVX Hedge Fund Activity: Q1 2025 in Review
46 of the 7,466 institutional investors tracked by Wall St. Rank reported a position in Abivax (ABVX) for Q1 2025, worth a combined $199M — down 9.2% from $219M a quarter earlier.
Sellers outnumbered buyers: 10 funds closed out of ABVX and 8 opened new positions — a net loss of 2 holders — while 11 trimmed existing stakes and 18 added.
The largest buyer was Octagon Capital Advisors, opening a new position worth an estimated $8.32M. The largest seller was Commodore Capital, exiting entirely with an estimated $9.4M sold.
- 46 institutional investors held Abivax (ABVX) as of Q1 2025, down from 48 in Q4 2024.
- Funds reported $199M of Abivax stock for Q1 2025, down 9.2% quarter-over-quarter.
- 8 funds opened new Abivax positions in Q1 2025 and 10 closed out, a net change of -2 holders.
- The largest Abivax buyer in Q1 2025 was Octagon Capital Advisors, an estimated $8.32M added.
- The largest Abivax seller in Q1 2025 was Commodore Capital, an estimated $9.4M sold.
Based on aggregated 13F filings for Q1 2025.