BARCLAYS PLC

Position in DGX — Quest Diagnostics Inc

CIK 312069 LONDON, X0

Back to DGX Full portfolio

Position in DGX

as of Mar 31, 2026 · filed May 15, 2026 Compact

Position Value

$110,820,809

+$52,982,915 QoQ

Shares Held

565,470

+69.7% QoQ

Ownership

0.511%

of shares outstanding

% of Portfolio

0.05%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

25 quarters on record

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

Common Shares in DGX Over Time

Shares Held

Position Value (USD)

Derivatives in DGX

reported options exposure · as of Dec 31, 2021

CallValue

CallShares

PutValue

$1,851,207

PutShares

10,700

Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.

Position in Diagnostics & Research

Healthcare · as of Mar 31, 2026

BARCLAYS PLC holds $2,117,156,031 across 34 Diagnostics & Research names. DGX ranks #4 (5.2% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	TMO	Thermo Fisher Scientific Inc.	1,844,083	$906,422,113
2	DHR	Danaher Corp /De/	1,621,385	$307,414,594
3	MTD	Mettler Toledo International Inc/	210,315	$265,249,276
4	DGX	Quest Diagnostics Inc This page	565,470	$110,820,809
5	IDXX	Idexx Laboratories Inc /De	187,715	$105,475,179
6	A	Agilent Technologies, Inc.	798,138	$90,971,768
7	WAT	Waters Corp /De/	180,779	$53,835,985
8	IQV	Iqvia Holdings Inc.	288,563	$49,211,533

All Filings in DGX

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37 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$110,820,809	565,470	+69.7%	Shares	Defined	2026-05-15
2025-12-31	$57,837,894	333,302	+32.7%	Shares	Sole	2026-02-13
2025-09-30	$47,860,734	251,132	-29.5%	Shares	Sole	2026-03-31
2025-06-30	$64,020,308	356,401	-8.0%	Shares	Sole	2026-02-27
2025-03-31	$65,564,830	387,499	+46.6%	Shares	Sole	2026-03-17
2024-12-31	$39,880,443	264,354	-11.6%	Shares	Sole	2026-03-19
2024-09-30	$46,407,639	298,922	+35.9%	Shares	Sole	2026-03-31
2024-06-30	$30,105,660	219,942	-53.3%	Shares	Sole	2026-03-23
2024-03-31	$62,747,387	471,395	+23.7%	Shares	Sole	2026-03-24
2023-12-31	$52,553,098	381,151	+55.3%	Shares	Sole	2026-03-24
2023-09-30	$29,912,242	245,464	-19.2%	Shares	Sole	2026-03-26
2023-06-30	$42,684,416	303,674	+38.8%	Shares	Sole	2026-03-27
2023-03-31	$30,957,945	218,815	-35.9%	Shares	Sole	2026-03-30
2022-12-31	$53,418,314	341,462	+4.9%	Shares	Sole	2026-03-30
2022-09-30	$39,945,040	325,577	+10.5%	Shares	Sole	2022-11-03
2022-06-30	$39,194,390	294,739	-1.8%	Shares	Sole	2022-08-12
2022-03-31	$41,060,324	300,017	+2703.9%	Shares	Sole	2022-05-16
2021-12-31	$1,851,207	10,700	-96.6%	Put	Sole	2022-02-23
2021-12-31	$54,203,685	313,298	-20.3%	Shares	Sole	2022-02-23
2021-09-30	$57,107,554	393,005	+392905.0%	Shares	Sole	2021-11-09
2021-09-30	$14,531	100	-99.1%	Call	Sole	2021-11-09
2021-09-30	$1,554,817	10,700	+1428.6%	Put	Sole	2021-11-09
2021-06-30	$92,379	700	-99.8%	Put	Sole	2021-08-13
2021-06-30	$44,988,439	340,899	+28.2%	Shares	Sole	2021-08-13
2021-03-31	$34,124,064	265,888	+37884.0%	Shares	Sole	2021-05-13
2021-03-31	$89,838	700	0.0%	Put	Sole	2021-05-13
2020-12-31	$83,419	700	-99.7%	Put	Sole	2021-02-11
2020-12-31	$29,470,859	247,301	+209.1%	Shares	Sole	2021-02-11
2020-09-30	$9,159,200	80,000	-53.1%	Put	Sole	2020-11-12
2020-09-30	$19,518,025	170,478	+446.4%	Shares	Sole	2020-11-12
2020-09-30	$3,572,088	31,200	-2.8%	Call	Sole	2020-11-12
2020-06-30	$3,658,116	32,100	-64.1%	Put	Sole	2020-08-12
2020-06-30	$10,197,708	89,485	+186.8%	Shares	Sole	2020-08-12
2020-06-30	$3,555,552	31,200	-55.9%	Call	Sole	2020-08-12
2020-03-31	$5,677,210	70,700	+71.6%	Call	Sole	2020-05-13
2020-03-31	$3,308,360	41,200	-64.7%	Put	Sole	2020-05-13
2020-03-31	$9,383,776	116,859	—	Shares	Sole	2020-05-13
No filing history on record for this holder in this stock.