Quest Diagnostics Incorporated DGX

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255.68 USD +8.62 (+3.49%)

At closeNov 4, 2026, 4:39 PM EST

255.68 0.00 0.00%

After hours · Nov 4, 4:39 PM ET

247.60 Day range 255.78

171.18 52-week range 256.99

Held by insiders 0.43%

Held by institutions 98.72%

Float held by institutions 99.15%

Institutions 1,555

Top institutional holders
Holder	% held	Shares	Value	Reported
Blackrock Inc.	8.43%	9,275,411	2.37B	Jun 29, 2026
Vanguard Capital Management LLC	6.57%	7,233,394	1.85B	Jun 29, 2026
Vanguard Portfolio Management LLC	5.57%	6,131,045	1.57B	Jun 29, 2026
State Street Corporation	5.01%	5,516,643	1.41B	Jun 29, 2026
Price (T.Rowe) Associates Inc	4.95%	5,444,986	1.39B	Jun 29, 2026
Boston Partners	4.31%	4,744,473	1.21B	Jun 29, 2026

Top mutual fund holders
Holder	% held	Shares	Value	Reported
VANGUARD INDEX FUNDS-Vanguard Total Stock Market Index Fund	3.19%	3,514,526	898.28M	Jun 29, 2026
VANGUARD INDEX FUNDS-Vanguard 500 Index Fund	2.61%	2,868,317	733.11M	Jun 29, 2026
VANGUARD INDEX FUNDS-Vanguard Mid-Cap Index Fund	2.18%	2,398,588	613.06M	Jun 29, 2026
iShares Trust-iShares Core S&P 500 ETF	1.34%	1,470,712	375.90M	Sep 29, 2026
Fidelity Concord Street Trust-Fidelity 500 Index Fund	1.30%	1,434,404	366.62M	Sep 29, 2026
SPDR S&P 500 ETF TRUST-State Street SPDR S&P 500 ETF Trust	1.25%	1,373,267	350.99M	Sep 29, 2026

DGX insiders
Insider	Relation	Latest transaction	Date	Shares held
DAVIS J E CAUSEY	Chief Executive Officer	Stock Award(Grant)	Mar 3, 2026	142,423
DAVIS JAMES E	Chief Executive Officer	Sale	Aug 31, 2026	122,423
DEPPE MICHAEL J	Officer	Stock Award(Grant)	Mar 3, 2026	35,196
DOHERTY CATHERINE T	Officer	Sale	Mar 4, 2026	71,624
GREGG VICKY B	Director	Stock Award(Grant)	Jul 21, 2026	18,386
MAIN TIMOTHY L	Director	Purchase	Jul 21, 2026	27,460

Held by funds