How many institutions held ABVX - Abivax S.A. - Ordinary Shares, par value EUR0.01 per share in Q3 2025?

165 institutional investors reported ABVX - Abivax S.A. - Ordinary Shares, par value EUR0.01 per share for Q3 2025. Use the holders table for investor-level position and value details.

Abivax S.A. - Ordinary Shares, par value EUR0.01 per share (ABVX)

Q: What does CUSIP 00370M103 represent in this 13F holders report?

CUSIP 00370M103 is the security identifier for ABVX - Abivax S.A. - Ordinary Shares, par value EUR0.01 per share used to aggregate holder disclosures.

CUSIP: 00370M103

Q3 2025 13F Holders as of 30 Sep 2025

Security type / class: Equity / Ordinary Shares, par value EUR0.01 per share
Total 13F shares: 51,964,814
Total 13F value: $4,408,157,076
Share change: +21,308,910
Put/Call ratio: 69%
SEC-reported price per share: $84.90
Number of holders: 165
Value change: +$2,126,922,733
Number of buys: 145
Number of sells: 24
Shares outstanding: 82,081,761

Security key

00370M103

Report period

Q3 2025

Institutions

165

Top holders

ABVX full security history Ownership snapshot Full 13F holder table Newer quarter: Q4 2025 Previous quarter: Q2 2025 Abivax S.A. SEC filings Abivax S.A. company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP 00370M103

Newer quarter: Q4 2025 Previous quarter: Q2 2025

Recent filing periods:

Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024

Ownership snapshot

Top reported holders of ABVX - Abivax S.A. - Ordinary Shares, par value EUR0.01 per share (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

TCG Crossover GP I, LLC

Disclosed value leader

TCG Crossover GP I, LLC

Comparable rows

15/15

Latest evidence

30 Sep 2025

13D/G 13F Lead comparable stake: 9.1% 13D/G row: TCG Crossover GP I, LLC Showing 1-6 of 15 holder rows.

Quick read

TCG Crossover GP I, LLC leads the comparable SEC ownership view at 9.1%.

15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens TCG Crossover GP I, LLC's linked filing trail.

Comparable ownership Top 5

TCG Crossover GP I, LLC 9.1%

Deep Track Capital, LP 4.8%

Venrock Healthcare Capital Partne... 0.8%

TCG Crossover Management, LLC 7.4%

ADAR1 Capital Management, LLC 3.7%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-6 of 15 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
TCG Crossover GP I, LLC	13D/G Chen Yu 13D/G	9.1%	$603,774,500 7,111,596 shares	$0	30 Sep 2025
Deep Track Capital, LP	13D/G 13F Company 13D/G 13F	4.8%	$28,885,195 3,480,144 shares	$0	30 Jun 2025
Venrock Healthcare Capital Partners III, L.P.	13D/G 13D/G	0.8%	$48,964,292 576,729 shares	$0	30 Sep 2025
TCG Crossover Management, LLC	13F Company 13F	7.4%	$46,332,959 6,056,596 shares	—	30 Jun 2025
ADAR1 Capital Management, LLC	13F Company 13F	3.7%	$23,495,751 3,071,340 shares	—	30 Jun 2025
Cormorant Asset Management, LP	13F Company 13F	2.6%	$16,294,500 2,130,000 shares	—	30 Jun 2025

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q3 2025

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

165

51,964,814

Rows available

165

Investor	Option	Weight %	Change %	SEC-reported value	* Price	Shares	Share Change	Activity	Report Period

^* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q3 2025 vs Q2 2025 Across Filers

Q2 2025 holders

Q3 2025 holders

165

Holder diff

122

Investor	Q2 2025 Shares	Q3 2025 Shares	Share Diff	Share Chg %	Q2 2025 value	Q3 2025 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend