GROUP ONE TRADING LLC

Position in CTMX — CytomX Therapeutics, Inc.

CIK 932540 CHICAGO, IL

Position in CTMX

as of Mar 31, 2026 · filed May 13, 2026 Compact

Position Value

$724,429

+$721,807 QoQ

Shares Held

154,134

+3637.5% QoQ

Ownership

0.071%

of shares outstanding

% of Portfolio

0.03%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2021

17 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Healthcare · as of Jun 30, 2026

GROUP ONE TRADING LLC holds $113,693,049 across 200 Biotechnology names.

#	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

17 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$724,429	154,134	+3637.5%	Shares	Sole	2026-05-13
2025-03-31	$2,622	4,124	-2.4%	Shares	Sole	2025-05-14
2024-12-31	$4,350	4,224	-14.0%	Shares	Sole	2025-05-14
2024-09-30	$5,794	4,911	-71.1%	Shares	Sole	2024-11-14
2024-06-30	$20,696	16,964	+2563.1%	Shares	Sole	2024-08-14
2024-03-31	$1,388	637	0.0%	Shares	Sole	2024-05-10
2023-12-31	$987	637	0.0%	Shares	Sole	2024-02-14
2023-09-30	$821	637	-82.5%	Shares	Sole	2023-11-09
2023-06-30	$6,252	3,635	+220.3%	Shares	Sole	2023-08-09
2023-03-31	$1,713	1,135	+479.1%	Shares	Sole	2023-05-12
2022-12-31	$313	196	0.0%	Shares	Sole	2023-02-09
2022-09-30	$284	196	0.0%	Shares	Sole	2022-11-09
2022-06-30	$358	196	-60.5%	Shares	Sole	2022-08-11
2022-03-31	$1,324	496	-67.2%	Shares	Sole	2022-05-12
2021-12-31	$6,542	1,511	-16.1%	Shares	Sole	2022-02-11
2021-06-30	$11,394	1,800	+63.6%	Shares	Sole	2021-08-10
2021-03-31	$8,503	1,100	—	Shares	Sole	2021-05-12
No filing history on record for this holder in this stock.