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ABVX

Abivax
ABVX

247 hedge funds and large institutions have $7.61B invested in Abivax in 2025 Q4 according to their latest regulatory filings, with 107 funds opening new positions, 76 increasing their positions, 50 reducing their positions, and 24 closing their positions.

New
Increased
Maintained
Reduced
Closed

346% more first-time investments, than exits

New positions opened: 107 | Existing positions closed: 24

73% more capital invested

Capital invested by funds: $4.41B → $7.61B (+$3.2B)

62% more funds holding in top 10

Funds holding in top 10: 21 → 34 (+13)

52% more repeat investments, than reductions

Existing positions increased: 76 | Existing positions reduced: 50

50% more funds holding

Funds holding: 165 → 247 (+82)

50% more call options, than puts

Call options by funds: $341M | Put options by funds: $228M

3.49% more ownership

Funds ownership: 68.76% → 72.25% (+3.5%)

Holders
247
Holders Change
+82
Holders Change %
+49.7%
% of All Funds
3%
Holding in Top 10
34
Holding in Top 10 Change
+13
Holding in Top 10 Change %
+61.9%
% of All Funds
0.41%
New
107
Increased
76
Reduced
50
Closed
24
Calls
$341M
Puts
$228M
Net Calls
+$113M
Net Calls Change
+$111M

Top Buyers

1
Morgan Stanley
Morgan Stanley
New York
+$183M
2
Westfield Capital Management
Westfield Capital Management
Massachusetts
+$110M
3
VPC
Vestal Point Capital
New York
+$98.2M
4
Deutsche Bank
Deutsche Bank
Germany
+$83.5M
5
Susquehanna International Group
Susquehanna International Group
Pennsylvania
+$78.6M

Top Sellers

1
CAM
Cormorant Asset Management
Massachusetts
-$65.5M
2
OCA
Octagon Capital Advisors
New York
-$62.1M
3
FFM
Fairmount Funds Management
Pennsylvania
-$60.6M
4
Point72 Asset Management
Point72 Asset Management
Connecticut
-$56.3M
5
VA
VR Adviser
New York
-$49M
Name Holding Trade Value Shares
Change 		Change in
Stake
TCM
1
TCG Crossover Management
California
$959M – – –
UBS Group
2
UBS Group
Switzerland
$597M -$4.08M -37,356 -0.8%
DGM
3
Darwin Global Management
Jersey
$440M +$1.53M +14,000 +0.4%
Morgan Stanley
4
Morgan Stanley
New York
$425M +$183M +1,681,277 +114%
Point72 Asset Management
5
Point72 Asset Management
Connecticut
$325M -$56.3M -516,198 -18%
VPC
6
Vestal Point Capital
New York
$256M +$98.2M +900,000 +90%
CP
7
Caligan Partners
New York
$196M – – –
PBA
8
Paradigm Biocapital Advisors
New York
$191M -$16M -146,723 -9%
Fidelity Investments
9
Fidelity Investments
Massachusetts
$184M -$7.09M -65,016 -5%
CAM
10
Cormorant Asset Management
Massachusetts
$182M -$65.5M -600,000 -31%
ACM
11
ADAR1 Capital Management
Texas
$178M -$3.65M -33,497 -2%
Westfield Capital Management
12
Westfield Capital Management
Massachusetts
$136M +$110M +1,009,966 New
BBA
13
Baker Bros. Advisors
New York
$118M – – –
Lord, Abbett & Co
14
Lord, Abbett & Co
New Jersey
$115M +$56M +513,026 +152%
Deutsche Bank
15
Deutsche Bank
Germany
$103M +$83.5M +764,899 New
OCA
16
Octagon Capital Advisors
New York
$102M -$62.1M -569,000 -43%
Susquehanna International Group
17
Susquehanna International Group
Pennsylvania
$102M +$78.6M +720,222 +2,081%
Millennium Management
18
Millennium Management
New York
$99.9M -$39.2M -358,970 -33%
NNPTE
19
Nationale-Nederlanden Powszechne Towarzystwo Emerytalne
Poland
$93.3M -$4.32M -39,550 -5%
Janus Henderson Group
20
Janus Henderson Group
United Kingdom
$90M +$34.2M +313,027 +88%
EP
21
Eversept Partners
New York
$88.7M +$25.2M +231,335 +54%
T. Rowe Price Associates
22
T. Rowe Price Associates
Maryland
$87.9M +$18.7M +171,775 +36%
SVCM
23
Saturn V Capital Management
Texas
$87.5M -$16.6M -152,045 -19%
AGP
24
Artia Global Partners
Florida
$81M +$40.9M +375,294 +166%
Citadel Advisors
25
Citadel Advisors
Florida
$76M -$12.9M -118,038 -17%
1
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ABVX Hedge Fund Activity: Q4 2025 in Review

247 of the 8,223 institutional investors tracked by Wall St. Rank reported a position in Abivax (ABVX) for Q4 2025, worth a combined $7.61B — up 73% from $4.41B a quarter earlier.

Buyers outnumbered sellers: 107 funds opened new ABVX positions and 24 closed out — a net gain of 83 holders — while 76 added to existing stakes and 50 trimmed.

The largest buyer was Morgan Stanley, adding an estimated $183M. The largest seller was Cormorant Asset Management, cutting an estimated $65.5M.

  • 247 institutional investors held Abivax (ABVX) as of Q4 2025, up from 165 in Q3 2025.
  • Funds reported $7.61B of Abivax stock for Q4 2025, up 73% quarter-over-quarter.
  • 107 funds opened new Abivax positions in Q4 2025 and 24 closed out, a net change of +83 holders.
  • The largest Abivax buyer in Q4 2025 was Morgan Stanley, an estimated $183M added.
  • The largest Abivax seller in Q4 2025 was Cormorant Asset Management, an estimated $65.5M sold.

Based on aggregated 13F filings for Q4 2025.