Institutional net value increased by $1.67B in the latest quarter despite a nearly balanced buyer/seller count (459 vs 469). Insiders sold $12.8M over 90 days with zero buys, yielding a conviction score of 0. No smart money convergence detected.

Confirmation

A sustained shift in insider activity or a clear directional move in institutional flows would confirm the next trend.

Invalidation Risk

Renewed insider buying or a reversal of the institutional accumulation would invalidate the neutral stance.

The above is AI-generated from public regulatory filings and summarizes historical data only. It is not investment advice and should not be used as the basis for any buy or sell decision.

Insider Trading (Form 4)

90d confidence

unique buyers

—

buy value

data as of 2026-07-16

12-Month Buy/Sell Activity

Feb 25

May 25

Sep 25

Feb 26

BuySell

操作	內部人	職稱	交易日	金額
賣出	Doherty Catherine T.	EVP, Regional Businesses	2026-03-05	$1.15M
賣出	PREVOZNIK MICHAEL E	SVP & General Counsel	2026-03-05	$800K
賣出	Plewman Patrick	SVP for Diagnostic Services	2026-03-05	$589K
賣出	KUPPUSAMY KARTHIK	SVP, Clinical Solutions	2026-03-04	$538K
賣出	Doherty Catherine T.	EVP, Regional Businesses	2026-03-03	$131K
賣出	PREVOZNIK MICHAEL E	SVP & General Counsel	2026-03-03	$109K
賣出	Plewman Patrick	SVP for Diagnostic Services	2026-03-03	$85K
賣出	Davis J. E.	CEO and President	2026-03-02	$2.13M

View all insider trades →

Form 144 Pre-Sale Notices

Filings (90d)

$1.63M

Total Est. Value

8K shares

Planned Shares

Last Filed 2026-06-04

Filer	Title/Relationship	Filing Date	Planned Shares	Est. Value
KUPPUSAMY KARTHIK	Officer	2026-06-04	8K shares	$1.63M

Form 144 is a planned sale notice, not an executed transaction. Form 144 Tracker。

Beneficial Ownership (13D/13G)

No Schedule 13D/13G filings for this ticker

Material Events (8-K)

No Form 8-K filings for this ticker

FAQ

Who are the top institutional investors holding QUEST DIAGNOSTICS INC (DGX)?

Major stakeholders currently include BlackRock, Inc. ($1.8B), Vanguard Capital Management LLC ($1.4B), Price T Rowe Associates INC /md/ ($1.2B). Based on the latest 13F filings, there are a total of 1061 tracked investment funds and institutions maintaining positions in DGX.

What is the overall institutional sentiment toward DGX recently?

Institutional sentiment appears Bullish (Net Buying). During the most recent reporting quarter, the stock experienced a net inflow of $1.7B, driven by 459 managers accumulating shares while 469 reduced their exposure.

Which institutions have been selling or reducing their DGX positions?

In the latest period, 377 funds trimmed their holdings, and 92 managers completely exited their positions. The aggregate reported sell value was $10.0B.

Are there any notable investors adding DGX to their portfolios?

Yes, buying activity remains notable. 107 institutions opened new positions in {ticker}, and 352 existing holders added to their shares. The total reported buy value for the quarter amounted to $7.5B.