Vault-13

ABIVAX SA ABVX

SPONSORED ADS · ADR · CUSIP 00370M103 · ISIN US00370M1036

165 institutional holders +121 vs Q2 2025
51,955,70752.0m shares reported held*
$4.4bnreported value*
127 new 16 added 17 reduced 8 sold out net bought ≈ $1.7bn (+20.5m 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 ($773.2k this quarter). Holder counts are more reliable. Implied quarter-end price ≈ $84.83. Options: 4 managers hold calls ($5.5m notional), 2 hold puts ($3.7m).

Trends to Q3 2025

Institutional holders

Managers reporting a position, each quarter

0100200Q4 23: 31Q1 24: 37Q2 24: 39Q3 24: 41Q4 24: 49Q1 25: 47Q2 25: 44Q3 25: 165165Q4 23Q2 24Q4 24Q2 25Q3 25
Numbers
QuarterHolders
Q4 202331
Q1 202437
Q2 202439
Q3 202441
Q4 202449
Q1 202547
Q2 202544
Q3 2025165

Buyers vs sellers

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

Bought or addedCut or sold out
2000200Q1 24: 21 bought or addedQ1 24: 13 cut or sold outQ1 24Q2 24: 17 bought or addedQ2 24: 15 cut or sold outQ3 24: 21 bought or addedQ3 24: 14 cut or sold outQ3 24Q4 24: 25 bought or addedQ4 24: 14 cut or sold outQ1 25: 26 bought or addedQ1 25: 19 cut or sold outQ1 25Q2 25: 22 bought or addedQ2 25: 20 cut or sold outQ3 25: 143 bought or addedQ3 25: 25 cut or sold outQ3 25
Numbers
QuarterBought or addedCut or sold out
Q1 20242113
Q2 20241715
Q3 20242114
Q4 20242514
Q1 20252619
Q2 20252220
Q3 202514325

Calls vs puts

Options held, notional value, last 4 quarters. P/C = puts ÷ calls

CallsPuts
$0$2m$4m$6mQ4 24 calls: $0Q4 24 puts: $0Q4 24P/C —Q1 25 calls: $0Q1 25 puts: $0Q1 25P/C —Q2 25 calls: $0Q2 25 puts: $0Q2 25P/C —Q3 25 calls: $5.5mQ3 25 puts: $3.7mQ3 25P/C 0.68
Numbers
QuarterCallsPutsP/C
Q4 2024$0$0—
Q1 2025$0$0—
Q2 2025$0$0—
Q3 2025$5.5m$3.7m0.68

Biggest buyers

UBS Group AG Added +4,293,606+4.3m
Darwin Global Management, Ltd. New +3,164,501+3.2m
Point72 Asset Management, L.P. Added +2,757,465+2.8m
Paradigm Biocapital Advisors LP New +1,564,196+1.6m
FMR LLC New +1,430,673+1.4m
TCG Crossover Management, LLC Added +1,055,000+1.1m
Vestal Point Capital, LP New +1,000,000+1.0m
MORGAN STANLEY Added +995,437+995.4k
ADAGE CAPITAL PARTNERS GP, L.L.C. New +977,629+977.6k
BAKER BROS. ADVISORS LP New +875,796+875.8k

Biggest sellers

Deep Track Capital, LP Sold out -3,480,144-3.5m
ADAR1 Capital Management, LLC Reduced -1,720,514-1.7m
GREAT POINT PARTNERS LLC Reduced -1,141,617-1.1m
Nantahala Capital Management, LLC Reduced -925,430-925.4k
FRANKLIN RESOURCES INC Reduced -854,960-855.0k
Venrock Adviser, LLC Reduced -769,051-769.1k
CITADEL ADVISORS LLC Reduced -570,472-570.5k
BOOTHBAY FUND MANAGEMENT, LLC Reduced -272,507-272.5k
KENNEDY CAPITAL MANAGEMENT LLC Sold out -241,188-241.2k
Caligan Partners LP Reduced -222,476-222.5k

Biggest calls

SUSQUEHANNA INTERNATIONAL GROUP, LLP New $3.8m45.2k shares
DLD Asset Management, LP New $1.2m14.4k shares
CITADEL ADVISORS LLC New $339.6k4.0k shares
GROUP ONE TRADING LLC New $93.4k1.1k shares

Biggest puts

SUSQUEHANNA INTERNATIONAL GROUP, LLP New $2.9m34.2k shares
CITADEL ADVISORS LLC New $840.5k9.9k shares

Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.

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 Q3 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 Q3 2025.

Holders, Q3 2025

#ManagerLocationShares Value% of their portfolioChangeShares change
1 TCG Crossover Management, LLC 29.70% of their portfolio PALO ALTO, CA 7,111,5967.1m $603.8m $603.8m 29.70% Added +1.1m +1,055,000
2 UBS Group AG 0.07% of their portfolio ZURICH, V8 4,461,2624.5m $378.8m $378.8m 0.07% Added +4.3m +4,293,606
3 Darwin Global Management, Ltd. 7.33% of their portfolio ST. HELIER, Y9 3,164,5013.2m $263.7m $263.7m 7.33% New
4 Point72 Asset Management, L.P. 0.54% of their portfolio STAMFORD, CT 2,925,3522.9m $248.4m $248.4m 0.54% Added +2.8m +2,757,465
5 Cormorant Asset Management, LP 11.42% of their portfolio BOSTON, MA 1,950,0001.9m $165.6m $165.6m 11.42% Reduced -180.0k -180,000
6 Paradigm Biocapital Advisors LP 3.93% of their portfolio NEW YORK, NY 1,564,1961.6m $132.8m $132.8m 3.93% New
7 MORGAN STANLEY 0.01% of their portfolio NEW YORK, NY 1,470,7171.5m $124.9m $124.9m 0.01% Added +995.4k +995,437
8 Caligan Partners LP 17.10% of their portfolio NEW YORK, NY 1,451,9241.5m $123.3m $123.3m 17.10% Reduced -222.5k -222,476
9 FMR LLC 0.01% of their portfolio BOSTON, MA 1,430,6731.4m $121.5m $121.5m 0.01% New
10 ADAR1 Capital Management, LLC 11.36% of their portfolio AUSTIN, TX 1,350,8261.4m $114.7m $114.7m 11.36% Reduced -1.7m -1,720,514
11 Octagon Capital Advisors LP 17.56% of their portfolio NEW YORK, NY 1,325,0001.3m $112.5m $112.5m 17.56% Added +58.0k +58,000
12 MILLENNIUM MANAGEMENT LLC 0.07% of their portfolio NEW YORK, NY 1,100,0301.1m $93.4m $93.4m 0.07% Reduced -151.7k -151,735
13 Vestal Point Capital, LP 3.85% of their portfolio NEW YORK, NY 1,000,0001.0m $84.9m $84.9m 3.85% New
14 ADAGE CAPITAL PARTNERS GP, L.L.C. 0.13% of their portfolio Boston, MA 977,629977.6k $83.0m $83.0m 0.13% New
15 BAKER BROS. ADVISORS LP 0.54% of their portfolio NEW YORK, NY 875,796875.8k $74.4m $74.4m 0.54% New
16 FARALLON CAPITAL MANAGEMENT, L.L.C. 0.39% of their portfolio SAN FRANCISCO, CA 805,000805.0k $68.3m $68.3m 0.39% Not comparable
17 Saturn V Capital Management LP 14.92% of their portfolio AUSTIN, TX 801,224801.2k $68.0m $68.0m 14.92% Added +178.7k +178,745
18 Aberdeen Group plc 0.11% of their portfolio EDINBURGH, X0 787,417787.4k $66.9m $66.9m 0.11% Added +76.9k +76,901
19 Nationale-Nederlanden Powszechne Towarzystwo Emerytalne S.A. 4.80% of their portfolio WARSZAWA, R9 731,523731.5k $62.1m $62.1m 4.80% New
20 Fairmount Funds Management LLC 5.45% of their portfolio WEST CONSHOHOCKEN, PA 713,434713.4k $60.6m $60.6m 5.45% New
21 CITADEL ADVISORS LLC 0.05% of their portfolio MIAMI, FL 681,785681.8k $57.9m $57.9m 0.05% Reduced -570.5k -570,472
22 BOOTHBAY FUND MANAGEMENT, LLC 1.28% of their portfolio NEW YORK, NY 597,931597.9k $50.8m $50.8m 1.28% Reduced -272.5k -272,507
23 Venrock Adviser, LLC 2.76% of their portfolio NEW YORK, NY 576,729576.7k $49.0m $49.0m 2.76% Reduced -769.1k -769,051
24 BVF INC/IL 1.92% of their portfolio San Francisco, CA 558,031558.0k $47.4m $47.4m 1.92% New
25 Nantahala Capital Management, LLC 2.92% of their portfolio NEW CANAAN, CT 557,564557.6k $47.3m $47.3m 2.92% Reduced -925.4k -925,430
26 SILVERARC CAPITAL MANAGEMENT, LLC 6.63% of their portfolio BOSTON, MA 539,704539.7k $45.8m $45.8m 6.63% New
27 FRANKLIN RESOURCES INC 0.01% of their portfolio San Mateo, CA 516,090516.1k $43.8m $43.8m 0.01% Reduced -855.0k -854,960
28 PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio BALTIMORE, MD 479,869479.9k $40.7m $40.7m 0.00% New
29 Holocene Advisors, LP 0.09% of their portfolio New York, NY 461,301461.3k $39.2m $39.2m 0.09% New
30 Jefferies Financial Group Inc. 0.36% of their portfolio NEW YORK, NY 457,325457.3k $38.8m $38.8m 0.36% New
31 Ensign Peak Advisors, Inc 0.06% of their portfolio SALT LAKE CITY, UT 455,684455.7k $38.7m $38.7m 0.06% Unchanged
32 Eversept Partners, LP 2.77% of their portfolio NEW YORK, NY 426,499426.5k $36.2m $36.2m 2.77% New
33 Logos Global Management LP 3.48% of their portfolio San Francisco, CA 415,000415.0k $35.2m $35.2m 3.48% New
34 EVENTIDE ASSET MANAGEMENT, LLC 0.55% of their portfolio Boston, MA 396,904396.9k $33.7m $33.7m 0.55% New
35 Ikarian Capital, LLC 6.76% of their portfolio DALLAS, TX 396,098396.1k $33.4m $33.4m 6.76% New
36 PERCEPTIVE ADVISORS LLC 0.95% of their portfolio NEW YORK, NY 388,608388.6k $33.0m $33.0m 0.95% New
37 ORBIMED ADVISORS LLC 0.77% of their portfolio New York, NY 380,000380.0k $32.3m $32.3m 0.77% New
38 Frazier Life Sciences Management, L.P. 0.96% of their portfolio PALO ALTO, CA 378,300378.3k $32.1m $32.1m 0.96% New
39 Affinity Asset Advisors, LLC 2.84% of their portfolio NEW YORK, NY 360,000360.0k $30.6m $30.6m 2.84% Added +260.0k +260,000
40 Vivo Capital, LLC 2.45% of their portfolio Palo Alto, CA 359,305359.3k $30.5m $30.5m 2.45% New
41 JANUS HENDERSON GROUP PLC 0.01% of their portfolio LONDON, X0 354,734354.7k $30.1m $30.1m 0.01% New
42 RTW INVESTMENTS, LP 0.37% of their portfolio NEW YORK, NY 350,000350.0k $29.7m $29.7m 0.37% New
43 LORD, ABBETT & CO. LLC 0.09% of their portfolio JERSEY CITY, NJ 336,706336.7k $28.6m $28.6m 0.09% New
44 Woodline Partners LP 0.12% of their portfolio San Francisco, CA 311,042311.0k $26.4m $26.4m 0.12% Added +127.2k +127,242
45 First Turn Management, LLC 3.72% of their portfolio DEL MAR, CA 291,820291.8k $24.8m $24.8m 3.72% New
46 Evergreen Quality Fund GP, Ltd. 0.54% of their portfolio GRAND CAYMAN, E9 288,600288.6k $24.5m $24.5m 0.54% New
47 Artia Global Partners LP 3.37% of their portfolio MIAMI, FL 225,453225.5k $19.1m $19.1m 3.37% New
48 Pictet Asset Management Holding SA 0.02% of their portfolio CAROUGE, V8 196,836196.8k $16.7m $16.7m 0.02% New
49 MARSHALL WACE, LLP 0.02% of their portfolio LONDON, X0 189,704189.7k $16.1m $16.1m 0.02% New
50 HighVista Strategies LLC 3.84% of their portfolio BOSTON, MA 184,468184.5k $15.7m $15.7m 3.84% Added +133.3k +133,312
51 STEMPOINT CAPITAL LP 2.85% of their portfolio NEW YORK, NY 166,273166.3k $14.1m $14.1m 2.85% Added +78.5k +78,525
52 Catalio Capital Management, LP 2.54% of their portfolio NEW YORK, NY 162,141162.1k $13.8m $13.8m 2.54% New
53 Balyasny Asset Management L.P. 0.03% of their portfolio Chicago, IL 160,220160.2k $13.6m $13.6m 0.03% New
54 Bronte Capital Management Pty Ltd. 1.35% of their portfolio Bondi Junction, C3 156,747156.7k $14.9m $14.9m 1.35% New
55 Patient Square Capital LP 3.45% of their portfolio MENLO PARK, CA 151,833151.8k $12.9m $12.9m 3.45% New
56 GREAT POINT PARTNERS LLC 5.32% of their portfolio Greenwich, CT 150,000150.0k $12.7m $12.7m 5.32% Reduced -1.1m -1,141,617
57 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 135,626135.6k $11.5m $11.5m 0.00% New
58 TimesSquare Capital Management, LLC 0.16% of their portfolio NEW YORK, NY 128,023128.0k $10.9m $10.9m 0.16% New
59 Boxer Capital Management, LLC 3.25% of their portfolio San Diego, CA 120,000120.0k $10.2m $10.2m 3.25% New
60 Apis Capital Advisors, LLC 1.98% of their portfolio New York, NY 105,400105.4k $8.9m $8.9m 1.98% New
61 NAN FUNG TRINITY (HK) LTD 0.86% of their portfolio CENTRAL, HONG KONG, K3 101,365101.4k $8.6m $8.6m 0.86% New
62 FEDERATED HERMES, INC. 0.01% of their portfolio PITTSBURGH, PA 99,50099.5k $8.4m $8.4m 0.01% New
63 First Light Asset Management, LLC 0.77% of their portfolio Edina, MN 95,95596.0k $8.1m $8.1m 0.77% New
64 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 95,59395.6k $8.1m $8.1m 0.00% Added +95.1k +95,057
65 Hudson Bay Capital Management LP 0.05% of their portfolio STAMFORD, CT 91,06291.1k $7.7m $7.7m 0.05% New
66 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 76,34276.3k $6.5m $6.5m 0.00% Reduced -37.0k -37,049
67 SAMSARA BIOCAPITAL, LLC 0.84% of their portfolio PALO ALTO, CA 75,44275.4k $6.4m $6.4m 0.84% New
68 LMR Partners LLP 0.08% of their portfolio LONDON, X0 74,07874.1k $6.3m $6.3m 0.08% New
69 Atika Capital Management LLC 0.50% of their portfolio NEW YORK, NY 69,00069.0k $5.9m $5.9m 0.50% New
70 JANE STREET GROUP, LLC 0.01% of their portfolio NEW YORK, NY 67,80267.8k $5.8m $5.8m 0.01% New
71 SEI INVESTMENTS CO 0.01% of their portfolio OAKS, PA 66,72566.7k $5.7m $5.7m 0.01% New
72 Velan Capital Investment Management LP 5.13% of their portfolio ALPHARETTA, GA 64,38964.4k $5.5m $5.5m 5.13% New
73 Melqart Asset Management (UK) Ltd 0.73% of their portfolio London, X0 64,15764.2k $5.4m $5.4m 0.73% New
74 Simplify Asset Management Inc. 0.11% of their portfolio Las Vegas, NV 61,44961.4k $5.2m $5.2m 0.11% New
75 AMERIPRISE FINANCIAL INC 0.00% of their portfolio MINNEAPOLIS, MN 58,61858.6k $5.0m $5.0m 0.00% New
76 Verition Fund Management LLC 0.03% of their portfolio GREENWICH, CT 56,61856.6k $4.8m $4.8m 0.03% New
77 Trexquant Investment LP 0.05% of their portfolio STAMFORD, CT 56,42056.4k $4.8m $4.8m 0.05% New
78 Parkman Healthcare Partners LLC 0.51% of their portfolio STAMFORD, CT 55,19755.2k $4.7m $4.7m 0.51% New
79 HRT FINANCIAL LP 0.02% of their portfolio NEW YORK, NY 53,07853.1k $4.5m $4.5m 0.02% New
80 J. Goldman & Co LP 0.17% of their portfolio NEW YORK, NY 51,89351.9k $4.4m $4.4m 0.17% Reduced -15.6k -15,607
81 Erste Asset Management GmbH 0.04% of their portfolio VIENNA, C4 50,00050.0k $4.2m $4.2m 0.04% New
82 TD Asset Management Inc 0.00% of their portfolio Toronto, A6 46,48646.5k $3.9m $3.9m 0.00% New
83 Russell Investments Group, Ltd. 0.00% of their portfolio Seattle, WA 41,89441.9k $3.6m $3.6m 0.00% New
84 DIADEMA PARTNERS LP 2.45% of their portfolio MORRISTOWN, NJ 41,62041.6k $3.5m $3.5m 2.45% New
85 FINDELL CAPITAL MANAGEMENT LLC 1.55% of their portfolio New York, NY 40,00040.0k $3.4m $3.4m 1.55% New
86 Resolute Capital Asset Partners LLC 1.78% of their portfolio DENVER, CO 40,00040.0k $3.4m $3.4m 1.78% New
87 CANTOR FITZGERALD, L. P. 0.06% of their portfolio NEW YORK, NY 35,00035.0k $3.0m $3.0m 0.06% New
88 SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio BALA CYNWYD, PA 34,61434.6k $2.9m $2.9m 0.00% New
89 Longaeva Partners L.P. 0.59% of their portfolio Chicago, IL 32,88632.9k $2.8m $2.8m 0.59% New
90 TUDOR INVESTMENT CORP ET AL 0.02% of their portfolio STAMFORD, CT 32,88332.9k $2.8m $2.8m 0.02% New
91 Quinn Opportunity Partners LLC 0.19% of their portfolio CHARLOTTESVILLE, VA 31,00031.0k $2.6m $2.6m 0.19% New
92 Privium Fund Management B.V. 0.46% of their portfolio AMSTERDAM, P7 30,41230.4k $2.6m $2.6m 0.46% New
93 Tetragon Partners GP Ltd 0.37% of their portfolio GRAND CAYMAN, E9 30,00030.0k $2.5m $2.5m 0.37% New
94 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 29,85229.9k $2.5m $2.5m 0.00% Added +13.0k +13,034
95 LPL Financial LLC 0.00% of their portfolio FORT MILL, SC 29,24729.2k $2.5m $2.5m 0.00% New
96 D. E. Shaw & Co., Inc. 0.00% of their portfolio New York, NY 27,53727.5k $2.3m $2.3m 0.00% New
97 MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio Toronto, A6 26,13626.1k $2.2m $2.2m 0.00% New
98 SummitTX Capital, L.P. 0.09% of their portfolio FORT WORTH, TX 25,82025.8k $2.2m $2.2m 0.09% New
99 Greenland Capital Management LP 0.31% of their portfolio NEW YORK, NY 25,03925.0k $2.1m $2.1m 0.31% New
100 Optiver Holding B.V. 0.03% of their portfolio AMSTERDAM, P7 23,10423.1k $2.0m $2.0m 0.03% New