DGX

QUEST DIAGNOSTICS INC

Data as of 2026 Q2 (06-30) · 13F snapshot

Summary

QUEST DIAGNOSTICS INC (DGX) is held as common stock by 6 tracked hedge-fund managers, with a combined reported value of ~$461.53M; the largest are Jeremy Grantham, Ken Griffin, Joel Greenblatt. 3 tracked managers also disclosed PUT or CALL positions, reported separately below. This quarter: 1 new, 1 added, 3 trimmed, 1 closed. 20 public STOCK Act / OGE trade disclosures are on record. Data as of 2026 Q2, from public SEC 13F filings, delayed up to ~45 days.

Attention · MediumThis quarter · Cooling

Common-stock holders63 also report options

Congress trades20

Price$237.62vs quarter-end+12.11%

Sectors0

This quarter's moves

New1

Added1

Trimmed / sold4

Top holderJeremy Grantham

Common-stock positions

PUT and CALL disclosures are excluded from these holder counts and values.

Jeremy GranthamHold

Value $400.21M0.9% of portfolio1,888,2072026 Q2

Investor	Period	Value	Shares	% of portfolio	Action
Jeremy Grantham	2026 Q2	$400.21M	1,888,207	0.9%	Hold

PUT / CALL disclosures

Reported separately: 13F option values are not common-stock ownership and do not reveal the full strategy or economic exposure.

Ken GriffinCALL—

Value $18.82M— of portfolio88,8002026 Q2

Ken GriffinPUT—

Value $11.70M— of portfolio55,2002026 Q2

Paul Tudor JonesCALL—

Value $4.43M— of portfolio20,9002026 Q2

Paul Tudor JonesPUT—

Value $4.26M— of portfolio20,1002026 Q2

Izzy EnglanderPUT—

Value $1.48M— of portfolio7,0002026 Q2

Izzy EnglanderCALL—

Value $1.27M— of portfolio6,0002026 Q2

Investor	Period	Value	Shares	% of portfolio	Action
Ken GriffinCALL	2026 Q2	$18.82M	88,800	—	—
Ken GriffinPUT	2026 Q2	$11.70M	55,200	—	—
Paul Tudor JonesCALL	2026 Q2	$4.43M	20,900	—	—
Paul Tudor JonesPUT	2026 Q2	$4.26M	20,100	—	—
Izzy EnglanderPUT	2026 Q2	$1.48M	7,000	—	—
Izzy EnglanderCALL	2026 Q2	$1.27M	6,000	—	—

Insider Trading

Officers · directors · Form 4

Open-market purchases and sales (P/S)3

Mark E Delaney
SVP & Chief Commercial Officer
Sell$376.3K
1,600 @ $235.18Traded 2026-07-28Filed 2026-07-29
Karthik Kuppusamy
SVP, Clinical Solutions
Sell$1.63M
8,147 @ $200.00Traded 2026-06-04Filed 2026-06-08
E. J. Davis
CEO and President
Sell$1.94M
10,000 @ $194.14Traded 2026-06-01Filed 2026-06-02

Insider transactions are public SEC Form 4 disclosures (company officers, directors, 10% owners), for research only — not investment advice.

Public SEC 13F filings may appear up to 45 days after quarter-end; STOCK Act / OGE trade filings are generally due within 45 days but may be late. Partial data only — research, not investment advice.