GROUP ONE TRADING LLC

Position in ABOS — Acumen Pharmaceuticals, Inc.

CIK 932540 CHICAGO, IL

Position in ABOS

as of Jun 30, 2026 · filed Aug 14, 2026 Compact

Position Value

$1,927

-$1,554 QoQ

Shares Held

722

-51.1% QoQ

Ownership

0.001%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

#90

of 96 holders

Holding Since

Sep 2022

15 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Healthcare · as of Jun 30, 2026

GROUP ONE TRADING LLC holds $113,695,832 across 200 Biotechnology names. ABOS ranks #154 (0.0% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	MRNA	Moderna, Inc.	203,915	$14,280,167
2	VKTX	Viking Therapeutics, Inc.	261,443	$10,198,891
3	CAPR	Capricor Therapeutics, Inc.	272,609	$6,564,424
4	ABSI	Absci Corp	524,747	$6,081,817
5	AGIO	Agios Pharmaceuticals, Inc.	151,994	$5,640,497
6	NKTR	Nektar Therapeutics	70,371	$4,912,599
7	CRSP	CRISPR Therapeutics AG	85,040	$4,638,081
8	ABVX	Abivax S.A.	29,767	$3,966,750

15 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$1,927	722	-51.1%	Shares	Sole	2026-08-14
2026-03-31	$3,481	1,475	-69.0%	Shares	Sole	2026-05-13
2025-12-31	$10,026	4,752	-39.1%	Shares	Sole	2026-02-12
2025-09-30	$13,334	7,798	-8.5%	Shares	Sole	2025-11-12
2025-06-30	$9,887	8,524	+253.5%	Shares	Sole	2025-08-14
2025-03-31	$2,652	2,411	-91.6%	Shares	Sole	2025-05-14
2024-12-31	$49,618	28,848	-76.5%	Shares	Sole	2025-05-14
2024-09-30	$304,020	122,589	-1.9%	Shares	Sole	2024-11-14
2024-06-30	$302,558	125,024	+345.9%	Shares	Sole	2024-08-14
2024-03-31	$113,549	28,037	+271.7%	Shares	Sole	2024-05-10
2023-12-31	$28,965	7,543	-77.0%	Shares	Sole	2024-02-14
2023-06-30	$157,768	32,800	+662.8%	Shares	Sole	2023-08-09
2023-03-31	$17,458	4,300	-68.2%	Shares	Sole	2023-05-12
2022-12-31	$72,948	13,509	+4.9%	Shares	Sole	2023-02-09
2022-09-30	$129,186	12,880	—	Shares	Sole	2022-11-09
No filing history on record for this holder in this stock.