GROUP ONE TRADING LLC

Position in DHR — Danaher Corp /De/

CIK 932540 CHICAGO, IL

Position in DHR

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

Position Value

$561,216

+$267,861 QoQ

Shares Held

2,960

+106.8% QoQ

Ownership

0.000%

of shares outstanding

% of Portfolio

0.02%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Dec 2020

15 quarters on record

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

Healthcare · as of Mar 31, 2026

GROUP ONE TRADING LLC holds $8,605,509 across 14 Diagnostics & Research names. DHR ranks #5 (6.5% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	QGEN	Qiagen N.V.	71,010	$2,843,240
2	ILMN	Illumina, Inc.	15,677	$1,932,347
3	NTRA	Natera, Inc.	7,791	$1,558,122
4	TMO	Thermo Fisher Scientific Inc.	2,409	$1,184,095
5	DHR	Danaher Corp /De/ This page	2,960	$561,216
6	DGX	Quest Diagnostics Inc	961	$188,336
7	ICLR	Icon PLC	1,555	$172,076
8	TWST	Twist Bioscience Corp	1,522	$72,325

15 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$561,216	2,960	+106.8%	Shares	Sole	2026-05-13
2025-03-31	$293,355	1,431	-37.7%	Shares	Sole	2025-05-14
2024-12-31	$527,505	2,298	+84.4%	Shares	Sole	2025-05-14
2023-09-30	$274,053	1,246	-64.1%	Shares	Sole	2023-11-09
2023-06-30	$739,361	3,475	-76.5%	Shares	Sole	2023-08-09
2023-03-31	$3,297,299	14,757	-70.7%	Shares	Sole	2023-05-12
2022-12-31	$11,870,014	50,446	+100.7%	Shares	Sole	2023-02-09
2022-09-30	$5,755,424	25,135	-26.3%	Shares	Sole	2022-11-09
2022-06-30	$7,660,440	34,084	-1.2%	Shares	Sole	2022-08-11
2022-03-31	$8,974,648	34,512	-53.9%	Shares	Sole	2022-05-12
2021-12-31	$21,854,370	74,927	-40.5%	Shares	Sole	2022-02-11
2021-09-30	$34,003,354	125,988	+55.7%	Shares	Sole	2021-11-12
2021-06-30	$19,247,692	80,904	+130.6%	Shares	Sole	2021-08-10
2021-03-31	$7,002,023	35,091	+164.3%	Shares	Sole	2021-05-12
2020-12-31	$2,615,067	13,279	—	Shares	Sole	2021-02-10
No filing history on record for this holder in this stock.