BlackRock, Inc.

Position in DGX — Quest Diagnostics Inc

CIK 2012383 New York, NY

Position in DGX

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

Position Value

$1,797,585,775

+$156,127,687 QoQ

Shares Held

9,172,292

-3.0% QoQ

Ownership

8.29%

of shares outstanding

% of Portfolio

0.03%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Sep 2024

7 quarters on record

Voting authority Sole 91.51844397435711.ToString("F0")% Shared 0.ToString("F0")% None 8.481556025642885.ToString("F0")%

Healthcare · as of Mar 31, 2026

BlackRock, Inc. holds $54,004,955,805 across 42 Diagnostics & Research names. DGX ranks #10 (3.3% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	TMO	Thermo Fisher Scientific Inc.	30,427,192	$14,955,877,673
2	DHR	Danaher Corp /De/	51,640,619	$9,791,061,354
3	IDXX	Idexx Laboratories Inc /De	8,365,553	$4,700,520,563
4	A	Agilent Technologies, Inc.	25,902,662	$2,952,385,405
5	IQV	Iqvia Holdings Inc.	15,027,444	$2,562,780,290
6	WAT	Waters Corp /De/	8,543,014	$2,544,109,560
7	ILMN	Illumina, Inc.	19,023,590	$2,344,847,691
8	MTD	Mettler Toledo International Inc/	1,771,002	$2,233,587,712

7 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$1,797,585,775	9,172,292	-3.0%	Shares	Sole	2026-05-13
2025-12-31	$1,641,458,088	9,459,218	-5.4%	Shares	Sole	2026-02-12
2025-09-30	$1,906,187,822	10,002,035	-3.0%	Shares	Sole	2025-11-12
2025-06-30	$1,852,519,690	10,312,975	+2.1%	Shares	Sole	2025-08-12
2025-03-31	$1,708,464,843	10,097,310	-0.3%	Shares	Sole	2025-05-02
2024-12-31	$1,527,408,763	10,124,677	-0.1%	Shares	Sole	2025-02-07
2024-09-30	$1,573,947,159	10,138,146	—	Shares	Sole	2024-11-13
No filing history on record for this holder in this stock.