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 8.64% 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	35.56%	12.08%	52.36%
Industry	Biotech Stocks	35.43%	12.01%	52.56%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Tcg crossover management	6.01M	8.64%	$800.60M
Darwin global management	3.62M	5.21%	$348.22M
Helikon investments	2.79M	4.01%	$371.41M
Vestal point capital, lp	2.35M	3.38%	$313.09M
Ubs group	1.84M	2.65%	$245.85M
Adar1 capital management	1.80M	2.60%	$240.49M
Caligan partners lp	1.56M	2.24%	$207.61M
Citadel advisors	1.44M	2.07%	$191.67M
Morgan stanley	1.43M	2.06%	$190.85M
Westfield capital management co lp	1.31M	1.88%	$174.55M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Tcg crossover management	6.01M	19.24%	$800.60M
Allostery investments lp	167.35K	16.31%	$1.28M
Kite lake capital management (uk) llp	300.60K	13.82%	$40.06M
Artia global partners lp	516.45K	12.70%	$68.82M
Octagon capital advisors lp	993.00K	11.89%	$132.33M
Apeiron capital	130.60K	11.18%	$17.40M
Helikon investments	2.79M	11.10%	$371.41M
Adar1 capital management	1.80M	11.01%	$240.49M
Saturn v capital management	518.87K	9.91%	$69.14M
Caligan partners lp	1.56M	9.77%	$207.61M

Top Buyers

Holder	Shares	% Assets	Change
Helikon investments	2.79M	11.10%	1.77M
Ra capital management	1.13M	1.31%	1.13M
Norges bank	1.10M	0.01%	1.10M
Citadel advisors	1.44M	0.02%	894.01K
Vestal point capital, lp	2.35M	7.32%	849.44K

Top Sellers

Holder	Shares	% Assets	Change
Deep track capital, lp	-	-	-3.48M
Ubs group	1.84M	0.03%	-2.70M
Commodore capital lp	-	-	-1.28M
Fmr	191.69K	0.00%	-1.09M
Blackstone	-	-	-936.61K

New Positions

Holder	Shares	% Assets	Change	Value
Ra capital management	1.13M	1.31%	1.13M	$150.92M
Norges bank	1.10M	0.01%	1.10M	$146.59M
Fairmount funds management	713.43K	5.45%	713.43K	$60.57M
Siren	576.00K	1.55%	576.00K	$76.76M
Summit partners public asset management	410.00K	0.96%	410.00K	$54.64M

Sold Out

Holder	Change
Fifth third bancorp	-7.00
Atlantic union bankshares	-10.00
Toth financial advisory	-11.00
Pinnacle wealth planning services	-15.00
Bryn mawr trust	-20.00

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 & Co. Growth Equity- SA	468.49K	0.59%	-
Lord Abbett Growth Leaders I	468.49K	0.59%	-
Lord Abbett Growth Leaders SMA	468.49K	0.59%	-
iShares Biotechnology ETF	474.65K	0.54%	-1.45K
T. Rowe Price Health Sciences	335.85K	0.43%	-91.40K
Eventide Healthcare & Life Sciences I	320.31K	0.41%	-7.54K
Westfield Capital Mgt Co Sm-Cap Gr Eq	293.05K	0.37%	12.23K
Harbor Small Cap Growth Instl	293.05K	0.37%	12.23K
Fidelity Growth Company Fund	279.58K	0.36%	-64.30K

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 35.43%, which Abivax exceeds.

Who owns the most shares of Abivax?

Abivax’s largest shareholders are Tcg crossover management (6.01M shares, 8.64%), Darwin global management (3.62M shares, 5.21%), and Helikon investments (2.79M shares, 4.01%). Together, they hold 17.86% 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 19.24% of its assets in 6.01M Abivax shares, valued at 800.6M$.

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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