Vault-13

ABIVAX SA ABVX

SPONSORED ADS · ADR · CUSIP 00370M103 · ISIN US00370M1036

44 institutional holders -3 vs Q1 2025
30,664,34630.7m shares reported held*
$234.6mreported value*
6 new 16 added 11 reduced 9 sold out net sold ≈ $8.4m (-1.1m shares)

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Implied quarter-end price ≈ $7.65.

Trends to Q2 2025

Institutional holders

Managers reporting a position, each quarter

0204060Q4 23: 31Q1 24: 37Q2 24: 39Q3 24: 41Q4 24: 49Q1 25: 47Q2 25: 4444Q4 23Q2 24Q4 24Q2 25
Numbers
QuarterHolders
Q4 202331
Q1 202437
Q2 202439
Q3 202441
Q4 202449
Q1 202547
Q2 202544

Buyers vs sellers

Managers adding to or starting a position, vs cutting or selling out

Bought or addedCut or sold out
40040Q1 24: 21 bought or addedQ1 24: 13 cut or sold outQ1 24Q2 24: 17 bought or addedQ2 24: 15 cut or sold outQ2 24Q3 24: 21 bought or addedQ3 24: 14 cut or sold outQ3 24Q4 24: 25 bought or addedQ4 24: 14 cut or sold outQ4 24Q1 25: 26 bought or addedQ1 25: 19 cut or sold outQ1 25Q2 25: 22 bought or addedQ2 25: 20 cut or sold outQ2 25
Numbers
QuarterBought or addedCut or sold out
Q1 20242113
Q2 20241715
Q3 20242114
Q4 20242514
Q1 20252619
Q2 20252220

Biggest buyers

ADAR1 Capital Management, LLC Added +861,321+861.3k
Caligan Partners LP Added +405,281+405.3k
BOOTHBAY FUND MANAGEMENT, LLC Added +299,770+299.8k
MILLENNIUM MANAGEMENT LLC Added +264,351+264.4k
Point72 Asset Management, L.P. Added +138,469+138.5k
BARCLAYS PLC Added +111,913+111.9k
STEMPOINT CAPITAL LP New +87,748+87.7k
Saturn V Capital Management LP Added +69,553+69.6k
J. Goldman & Co LP New +67,500+67.5k
Paloma Partners Management Co Added +56,681+56.7k

Biggest sellers

Allostery Investments LP Reduced -932,304-932.3k
JPMORGAN CHASE & CO Sold out -907,679-907.7k
SAMSARA BIOCAPITAL, LLC Sold out -425,000-425.0k
GREAT POINT PARTNERS LLC Reduced -346,494-346.5k
Walleye Capital LLC Sold out -220,845-220.8k
SILVERARC CAPITAL MANAGEMENT, LLC Sold out -210,901-210.9k
CITADEL ADVISORS LLC Reduced -121,603-121.6k
Affinity Asset Advisors, LLC Reduced -100,000-100.0k
Deep Track Capital, LP Reduced -99,065-99.1k
MARSHALL WACE, LLP Sold out -74,841-74.8k

Major shareholders (over 5%)

Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.

HolderStakeChangeShares Last filed
TCG Crossover GP I, LLC 13G · passive investor -2.1 pts · filed 2026-08-14 7.0% -2.1 pts 6.0m 2026-08-14
Invus Global Management, LLC 13G · passive investor +1.0 pts · filed 2026-08-13 6.0% +1.0 pts 4.8m 2026-08-13

Fell to 5% or below in the last year: Sofinnova Crossover I (4.3%, 2026-07-06), Venrock Healthcare Capital Partners III, L.P. (0.8%, 2025-11-14)

Insider purchases and sales in Q2 2025

Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.

None reported in Q2 2025.

Holders, Q2 2025

#ManagerLocationShares Value% of their portfolioChangeShares change
1 TCG Crossover Management, LLC 5.29% of their portfolio PALO ALTO, CA 6,056,5966.1m $46.3m $46.3m 5.29% Unchanged
2 Deep Track Capital, LP 0.86% of their portfolio GREENWICH, CT 3,480,1443.5m $26.6m $26.6m 0.86% Reduced -99.1k -99,065
3 ADAR1 Capital Management, LLC 3.82% of their portfolio AUSTIN, TX 3,071,3403.1m $23.5m $23.5m 3.82% Added +861.3k +861,321
4 Cormorant Asset Management, LP 1.21% of their portfolio BOSTON, MA 2,130,0002.1m $16.3m $16.3m 1.21% Unchanged
5 Caligan Partners LP 2.49% of their portfolio NEW YORK, NY 1,674,4001.7m $12.8m $12.8m 2.49% Added +405.3k +405,281
6 Nantahala Capital Management, LLC 0.80% of their portfolio NEW CANAAN, CT 1,482,9941.5m $11.3m $11.3m 0.80% Unchanged
7 FRANKLIN RESOURCES INC 0.00% of their portfolio San Mateo, CA 1,371,0501.4m $10.5m $10.5m 0.00% Unchanged
8 Venrock Adviser, LLC 0.77% of their portfolio NEW YORK, NY 1,345,7801.3m $10.3m $10.3m 0.77% Unchanged
9 GREAT POINT PARTNERS LLC 6.42% of their portfolio Greenwich, CT 1,291,6171.3m $9.9m $9.9m 6.42% Reduced -346.5k -346,494
10 Octagon Capital Advisors LP 2.13% of their portfolio NEW YORK, NY 1,267,0001.3m $9.7m $9.7m 2.13% Added +37.0k +37,000
11 CITADEL ADVISORS LLC 0.01% of their portfolio MIAMI, FL 1,252,2571.3m $9.6m $9.6m 0.01% Reduced -121.6k -121,603
12 MILLENNIUM MANAGEMENT LLC 0.01% of their portfolio NEW YORK, NY 1,251,7651.3m $9.6m $9.6m 0.01% Added +264.4k +264,351
13 BOOTHBAY FUND MANAGEMENT, LLC 0.20% of their portfolio NEW YORK, NY 870,438870.4k $6.7m $6.7m 0.20% Added +299.8k +299,770
14 Aberdeen Group plc 0.01% of their portfolio EDINBURGH, X0 710,516710.5k $5.4m $5.4m 0.01% Unchanged
15 Saturn V Capital Management LP 1.93% of their portfolio AUSTIN, TX 622,479622.5k $4.8m $4.8m 1.93% Added +69.6k +69,553
16 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 475,280475.3k $3.6m $3.6m 0.00% Reduced -21.9k -21,873
17 Ensign Peak Advisors, Inc 0.01% of their portfolio SALT LAKE CITY, UT 455,684455.7k $3.5m $3.5m 0.01% Unchanged
18 KENNEDY CAPITAL MANAGEMENT LLC 0.04% of their portfolio ST LOUIS, MO 241,188241.2k $1.8m $1.8m 0.04% Added +16.0k +15,997
19 Woodline Partners LP 0.01% of their portfolio San Francisco, CA 183,800183.8k $1.4m $1.4m 0.01% Reduced -18.1k -18,124
20 CITIGROUP INC 0.00% of their portfolio NEW YORK, NY 170,733170.7k $1.3m $1.3m 0.00% Reduced -13.5k -13,506
21 Point72 Asset Management, L.P. 0.00% of their portfolio STAMFORD, CT 167,887167.9k $1.3m $1.3m 0.00% Added +138.5k +138,469
22 UBS Group AG 0.00% of their portfolio ZURICH, V8 167,656167.7k $1.3m $1.3m 0.00% Added +5.1k +5,102
23 Allostery Investments LP 16.31% of their portfolio Stamford, CT 167,350167.3k $1.3m $1.3m 16.31% Reduced -932.3k -932,304
24 Soleus Capital Management, L.P. 0.07% of their portfolio GREENWICH, CT 125,000125.0k $956.2k $956.2k 0.07% Unchanged
25 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 113,391113.4k $867.4k $867.4k 0.00% Added +111.9k +111,913
26 Affinity Asset Advisors, LLC 0.11% of their portfolio NEW YORK, NY 100,000100.0k $765.0k $765.0k 0.11% Reduced -100.0k -100,000
27 Paloma Partners Management Co 0.17% of their portfolio GREENWICH, CT 95,13095.1k $727.7k $727.7k 0.17% Added +56.7k +56,681
28 STEMPOINT CAPITAL LP 0.22% of their portfolio NEW YORK, NY 87,74887.7k $671.3k $671.3k 0.22% New
29 J. Goldman & Co LP 0.02% of their portfolio NEW YORK, NY 67,50067.5k $516.4k $516.4k 0.02% New
30 HighVista Strategies LLC 0.14% of their portfolio BOSTON, MA 51,15651.2k $391.3k $391.3k 0.14% Added +2.1k +2,092
31 NewEdge Advisors, LLC 0.00% of their portfolio NEW ORLEANS, LA 30,00030.0k $229.5k $229.5k 0.00% New
32 Quadrature Capital Ltd 0.00% of their portfolio LONDON, X0 19,36719.4k $148.2k $148.2k 0.00% New
33 XTX Topco Ltd 0.01% of their portfolio LONDON, X0 18,19418.2k $139.2k $139.2k 0.01% New
34 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 16,81816.8k $128.7k $128.7k 0.00% Added +69 +69
35 GUGGENHEIM CAPITAL LLC 0.00% of their portfolio CHICAGO, IL 16,09716.1k $123.1k $123.1k 0.00% Added +2.3k +2,305
36 BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio PARIS, I0 10,67010.7k $81.6k $81.6k 0.00% Reduced -776 -776
37 Hurley Capital, LLC 0.02% of their portfolio NEW YORK, NY 3,0153.0k $23.1k $23.1k 0.02% Unchanged
38 RHUMBLINE ADVISERS 0.00% of their portfolio BOSTON, MA 981981 $7.5k $7.5k 0.00% Added +243 +243
39 GAMMA Investing LLC 0.00% of their portfolio FOSTER CITY, CA 645645 $4.9k $4.9k 0.00% Reduced -2.4k -2,368
40 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 536536 $4.1k $4.1k 0.00% Reduced -10.2k -10,170
41 Financial Management Professionals, Inc. 0.00% of their portfolio AUSTIN, TX 100100 $765 $765 0.00% Unchanged
42 PRINCIPAL SECURITIES, INC. 0.00% of their portfolio DES MOINES, IA 3636 $275 $275 0.00% Added +26 +26
43 EverSource Wealth Advisors, LLC 0.00% of their portfolio BIRMINGHAM, AL 88 $61 $61 0.00% New
44 CONCOURSE FINANCIAL GROUP SECURITIES, INC. — of their portfolio BIRMINGHAM, AL 00 $0 $0 — Unchanged