Abivax ABVX Institutional Ownership

NASDAQ ABVX

$114.79 +0.75 (+0.66%)

As of: Sep 4, 2026 · 3:59 PM EDT

Institutions by Trading Activity

302 Institutions

Increased 190 62.9%

Unchanged 13 4.3%

Reduced 99 32.8%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

79.03%

▲+5.98 pp QoQ

Shares Held by Institutions

54.95Mn

of 69.53Mn outstanding

▲+18.70% QoQ

Shares Outstanding

69.53Mn

14.58Mn held outside 13F filers

Institutional Investors

302

filed 13F for Jun 2026

▲+52 vs prior quarter

Net Shares Added (QoQ)

+8.66Mn

accumulated since last quarter

Value of Holdings

$6.27Bn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

Abivax S.A. (NASDAQ:ABVX) is held by 302 institutional investors per 13F filings through June 2026.

Their combined ownership stood at 79.0% of outstanding shares in June 2026, up from 73.0% in March 2026.
They increased total shares held in Abivax by 18.7% from the prior quarter, while the number of investors in ABVX increased 619.05% year over year.
Of these 302 holders, 190 added to their stakes in Abivax, 99 trimmed positions, and 13 made no changes.
The aggregate institutional position in Abivax amounted to 54.95Mn shares as of June 2026, up by 8.66Mn shares quarter on quarter, and up 25.78Mn shares year over year.
As of June 30, 2026, TCG Crossover Management, LLC held the largest stake in Abivax with 6.01Mn shares, accounting for 8.64% of total shares outstanding.
Leading buyers of Abivax shares for the quarter ending June 2026 were Jupiter Topco LLC (1.91Mn), Helikon Investments Ltd (1.77Mn), RA CAPITAL MANAGEMENT, L.P. (1.13Mn), NORGES BANK (1.1Mn), CITADEL ADVISORS LLC (894.01K).
Top sellers of ABVX stock for the quarter ending June 2026 included UBS Group AG (2.7Mn), FMR LLC (1.09Mn), LORD, ABBETT & CO. LLC (845.42K), Point72 Asset Management, L.P. (632.71K), Jpmorgan Chase & Co (629.35K).
According to Business Quant data, leading holders of ABVX for June 2026 are TCG Crossover Management, LLC (6.01Mn), Darwin Global Management, Ltd. (3.62Mn), Helikon Investments Ltd (2.79Mn), Vestal Point Capital, LP (2.35Mn), Jupiter Topco LLC (1.91Mn), UBS Group AG (1.84Mn), ADAR1 Capital Management, LLC (1.8Mn), Caligan Partners LP (1.56Mn), CITADEL ADVISORS LLC (1.44Mn), Morgan Stanley (1.43Mn).

Form 13F Holdings

302 Institutional Holders

Report period 30 Jun, 2026

Total shares held 54.95Mn

Of outstanding 79.03%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	TCG Crossover Management, LLC	0001839948	6,007,834	8.64%	▼473,251	-7.30%	$800.60Mn
2	Darwin Global Management, Ltd.	0001839209	3,621,583	5.21%	▲152,926	+4.41%	$348.22Mn
3	Helikon Investments Ltd	0001839497	2,787,131	4.01%	▲1,773,807	+175.05%	$371.41Mn
4	Vestal Point Capital, LP	0001974915	2,349,443	3.38%	▲849,443	+56.63%	$313.09Mn
5	Jupiter Topco LLC	0002146052	1,913,933	2.75%	▲1,913,933	0.00%	$255.13Mn
6	UBS Group AG	0001610520	1,844,918	2.65%	▼2,702,488	-59.43%	$245.85Mn
7	ADAR1 Capital Management, LLC	0001940272	1,804,703	2.60%	▲410,684	+29.46%	$240.49Mn
8	Caligan Partners LP	0001727492	1,557,924	2.24%	▲96,000	+6.57%	$207.61Mn
9	CITADEL ADVISORS LLC	0001423053	1,438,352	2.07%	▲894,014	+164.24%	$191.67Mn
10	Morgan Stanley	0000895421	1,432,185	2.06%	▼272,773	-16.00%	$190.85Mn
11	WESTFIELD CAPITAL MANAGEMENT CO LP	0001177719	1,309,825	1.88%	▼13,113	-0.99%	$174.55Mn
12	RA CAPITAL MANAGEMENT, L.P.	0001346824	1,132,557	1.63%	▲1,132,557	0.00%	$150.92Mn
13	NORGES BANK	0001374170	1,100,000	1.58%	▲1,100,000	0.00%	$146.59Mn
14	SUSQUEHANNA INTERNATIONAL GROUP, LLP	0001446194	1,053,896	1.52%	▲672,614	+176.41%	$140.44Mn
15	Logos Global Management LP	0001792126	1,024,000	1.47%	▲349,000	+51.70%	$136.46Mn
16	Octagon Capital Advisors LP	0001839435	993,000	1.43%	▲316,000	+46.68%	$132.33Mn
17	Bank Of America Corp /De/	0000070858	971,439	1.40%	▲235,710	+32.04%	$129.45Mn
18	Eversept Partners, LP	0001697013	913,880	1.31%	▼20,543	-2.20%	$121.78Mn
19	Goldman Sachs Group Inc	0000886982	792,712	1.14%	▲443,915	+127.27%	$105.64Mn
20	Nationale-Nederlanden Powszechne Towarzystwo Emerytalne S.A.	0002011081	765,332	1.10%	▼583	-0.08%	$101.99Mn

Showing 1 to 20 of 302 holders