Abivax Ownership | Who Owns Abivax?

Abivax Ownership Summary

Abivax is owned by 71.95% institutional investors, and 28.05% retail investors. Tcg crossover management is the largest institutional shareholder, holding 9.32% of ABVX shares. Xtrackers MSCI World Swap ETF 1C is the top mutual fund, with 0.96% of its assets in Abivax shares.

ABVX Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Abivax	71.95%	-	28.05%
Sector	Healthcare Stocks	35.80%	11.87%	52.33%
Industry	Biotech Stocks	36.05%	11.82%	52.13%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Tcg crossover management	6.48M	9.32%	$721.67M
Ubs group	4.55M	6.54%	$506.35M
Darwin global management	3.47M	4.99%	$352.07M
Morgan stanley	1.70M	2.45%	$189.85M
Vestal point capital, lp	1.50M	2.16%	$167.03M
Adar1 capital management	1.35M	2.13%	$114.69M
Caligan partners lp	1.46M	2.10%	$162.79M
Westfield capital management co lp	1.32M	1.90%	$147.31M
Fmr	1.29M	1.85%	$143.24M
Helikon investments	1.01M	1.46%	$112.83M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Tcg crossover management	6.48M	20.65%	$721.67M
Allostery investments lp	167.35K	16.31%	$1.28M
Artia global partners lp	600.75K	14.74%	$66.89M
Saturn v capital management	542.70K	10.94%	$60.43M
Caligan partners lp	1.46M	10.83%	$162.79M
Adar1 capital management	1.35M	10.77%	$114.69M
Brummer multi-strategy ab	22.43K	10.40%	$2.50M
Darwin global management	3.47M	9.34%	$352.07M
Kite lake capital management (uk) llp	100.00K	8.93%	$11.13M
Octagon capital advisors lp	677.00K	8.34%	$75.38M

Top Buyers

Holder	Shares	% Assets	Change
Helikon investments	1.01M	4.26%	1.01M
Fairmount funds management	713.43K	5.45%	713.43K
Rtw investments, lp	350.00K	0.37%	350.00K
Westfield capital management co lp	1.32M	0.62%	312.97K
Darwin global management	3.47M	9.34%	290.16K

Top Sellers

Holder	Shares	% Assets	Change
Deep track capital, lp	-	-	-3.48M
Point72 asset management	637.74K	0.09%	-1.77M
Adar1 capital management	1.35M	10.77%	-1.72M
Morgan stanley	1.70M	0.01%	-1.45M
Commodore capital lp	-	-	-1.28M

New Positions

Holder	Shares	% Assets	Change	Value
Helikon investments	1.01M	4.26%	1.01M	$112.83M
Fairmount funds management	713.43K	5.45%	713.43K	$60.57M
Rtw investments, lp	350.00K	0.37%	350.00K	$29.71M
Kite lake capital management (uk) llp	100.00K	8.93%	100.00K	$11.13M
Centiva capital, lp	57.15K	0.05%	57.15K	$6.36M

Sold Out

Holder	Change
Bryn mawr trust	-20.00
Principal securities	-21.00
Srs capital advisors	-62.00
Kestra advisory services	-165.00
Daiwa securities group	-170.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Mar 31, 2026	283	3.28%	50,027,573	-11.15%	71	0.91%	164	-9.89%	74	45.10%
Dec 31, 2025	64	-62.57%	7,017,127	-86.50%	11	0.16%	52	-65.10%	8	-50.00%
Sep 30, 2025	40	-2.44%	1,679,388	-94.20%	2	0.13%	37	68.18%	2	-77.78%
Jun 30, 2025	43	-6.52%	30,664,346	-3.45%	48	1.92%	22	-15.38%	11	-
Mar 31, 2025	12	-74.47%	16,302,452	-45.41%	25	0.54%	6	-77.78%	2	-77.78%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Xtrackers MSCI World Swap ETF 1C	760.11K	0.96%	-4.79K
Lord Abbett Growth Leaders I	468.49K	0.60%	-
Lord Abbett Growth Leaders SMA	468.49K	0.59%	468.49K
Lord Abbett & Co. Growth Equity- SA	468.49K	0.59%	-
iShares Biotechnology ETF	363.74K	0.46%	5.25K
Fidelity Growth Compy Commingled Pl S	358.79K	0.46%	-93.99K
T. Rowe Price Health Sciences	335.85K	0.43%	-91.40K
Eventide Healthcare & Life Sciences I	320.31K	0.41%	-7.54K
HBM Healthcare Investments AG Ord	300.00K	0.38%	-
Alger Spectra A	280.62K	0.36%	-

ABVX Ownership FAQ

Who Owns Abivax?

Abivax shareholders are primarily institutional investors at 71.95%, followed by 0% insiders and 0% retail investors. The average institutional ownership in Abivax's industry, Biotech Stocks , is 36.05%, which Abivax exceeds.

Who owns the most shares of Abivax?

Abivax’s largest shareholders are Tcg crossover management (6.48M shares, 9.32%), Ubs group (4.55M shares, 6.54%), and Darwin global management (3.47M shares, 4.99%). Together, they hold 20.85% of Abivax’s total shares outstanding.

Does Blackrock own Abivax?

BlackRock is not among the top 10 institutional shareholders of Abivax.

Who is Abivax’s biggest shareholder by percentage of total assets invested?

Tcg crossover management is Abivax’s biggest shareholder by percentage of total assets invested, with 20.65% of its assets in 6.48M Abivax shares, valued at 721.67M$.

Who is the top mutual fund holder of Abivax shares?

Xtrackers MSCI World Swap ETF 1C is the top mutual fund holder of Abivax shares, with 0.96% of its total shares outstanding invested in 760.11K Abivax shares.

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