Brummer Multi-Strategy AB

Position in ABVX — Abivax S.A.

CIK 2003159 STOCKHOLM, V7

Position in ABVX

as of Mar 31, 2026 · filed May 6, 2026 Compact

Position Value

$2,497,357

+$558,817 QoQ

Shares Held

22,428

+56.0% QoQ

Ownership

0.028%

of shares outstanding

% of Portfolio

10.40%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Dec 2025

2 quarters on record

Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Healthcare · as of Mar 31, 2026

Brummer Multi-Strategy AB holds $8,644,181 across 4 Biotechnology names. ABVX ranks #2 (28.9% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	ARVN	Arvinas, Inc.	285,076	$3,021,805
2	ABVX	Abivax S.A. This page	22,428	$2,497,357
3	MRVI	Maravai Lifesciences Holdings, Inc.	759,743	$2,150,072
4	ATAI	AtaiBeckley Inc.	275,409	$974,947

2 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$2,497,357	22,428	+56.0%	Shares	Sole	2026-05-06
2025-12-31	$1,938,540	14,375	—	Shares	Sole	2026-02-04
No filing history on record for this holder in this stock.