Save your place

Sign in to WhoBought

Please try again later.

Quest Diagnostics Incorporated (DGX) institutional ownership

Latest close $207.66 Jul 20, 2026
Market cap$23.5B 52-week range SectorHealthcare
Funds holding · Q1 2026
926
reported DGX position changes
Top owners · Q1 2026
No disclosed owners are available.
Institutional activity · Q1 2026
Net sold $729M
462 buyers · 464 sellers

Quest Diagnostics Incorporated (DGX) price and institutional activity

Dates

Q1 2026

$850M bought by 462 investors
Edgepoint Investment Group Inc.$113MM.d. Sass, LLC$58M +460 more
$1.6B sold by 464 investors
Norges-$257MPacer Advisors, Inc.-$87M +462 more
Bought Sold Totals per quarter; hover a bar for the names.

Quest Diagnostics Incorporated (DGX) institutional activity · 926

Investor Type Est. change Change Δ Own Date
Norges · Exited −$257M
Change −1.3M Δ Own −100.0% Date Q1 2026
Norges Exited· Q1 2026 −$257M −1.3M −100.0% Q1 2026
Edgepoint Investment Group Inc. · Added +$113M
Change +583K Date Q1 2026
Edgepoint Investment Group Inc. Added· Q1 2026 +$113M +583K Q1 2026
Pacer Advisors, Inc. · Exited −$87M
Change −448K Δ Own −100.0% Date Q1 2026
Pacer Advisors, Inc. Exited· Q1 2026 −$87M −448K −100.0% Q1 2026
UBS Group AG · Reduced −$80M
Change −412K Date Q1 2026
UBS Group AG Reduced· Q1 2026 −$80M −412K Q1 2026
Goldman Sachs Group Inc · Reduced −$70M
Change −360K Date Q1 2026
Goldman Sachs Group Inc Reduced· Q1 2026 −$70M −360K Q1 2026
Fiduciary Management Inc · Reduced −$63M
Change −326K Date Q1 2026
Fiduciary Management Inc Reduced· Q1 2026 −$63M −326K Q1 2026
Freestone Grove Partners LP · Reduced −$59M
Change −304K Date Q1 2026
Freestone Grove Partners LP Reduced· Q1 2026 −$59M −304K Q1 2026
M.d. Sass, LLC · New +$58M
Change +299K Date Q1 2026
M.d. Sass, LLC New· Q1 2026 +$58M +299K Q1 2026
JPMorgan Chase & Co · Reduced −$58M
Change −299K Date Q1 2026
JPMorgan Chase & Co Reduced· Q1 2026 −$58M −299K Q1 2026
BlackRock · Reduced −$56M
Change −287K Date Q1 2026
BlackRock Reduced· Q1 2026 −$56M −287K Q1 2026
Jane Street Group, LLC · Reduced −$56M
Change −286K Date Q1 2026
Jane Street Group, LLC Reduced· Q1 2026 −$56M −286K Q1 2026
Victory Capital Management Inc · Reduced −$54M
Change −280K Date Q1 2026
Victory Capital Management Inc Reduced· Q1 2026 −$54M −280K Q1 2026
FMR LLC · Reduced −$51M
Change −260K Δ Own −21.6% Date Q1 2026
FMR LLC Reduced· Q1 2026 −$51M −260K −21.6% Q1 2026
Woodline Partners LP · Added +$49M
Change +252K Date Q1 2026
Woodline Partners LP Added· Q1 2026 +$49M +252K Q1 2026
Clark Capital Management Group, Inc. · New +$46M
Change +235K Date Q1 2026
Clark Capital Management Group, Inc. New· Q1 2026 +$46M +235K Q1 2026
Data through Q1 2026 · filed Jun 10, 2026
15 of 926

Famous investor activity in Quest Diagnostics Incorporated (DGX)

Quest Diagnostics Incorporated (DGX) insider trading

Company insiders, action and economics first; trade and filed dates last.
Dates
Insider Title Type Price Qty Value Owned ΔOwn Trade date Filed date
Wentworth Timothy C. · Director Grant (A) 144
Owned 342 Trade date Jul 1, 2026 Filed date Jul 2, 2026
Wentworth Timothy C. Director Grant (A) 144 342 Jul 1, 2026 Jul 2, 2026
Kuppusamy Karthik · Officer Sell −$1.6M
Price $200.00 Qty −8K Owned 14K Trade date Jun 4, 2026 Filed date Jun 8, 2026
Kuppusamy Karthik Officer Sell $200.00 −8K −$1.6M 14K Jun 4, 2026 Jun 8, 2026
Kuppusamy Karthik · Officer 4 operations $0
Price $121.80–$127.72 Qty 0 Owned 0 Trade date Jun 4, 2026 Filed date Jun 8, 2026
Kuppusamy Karthik Officer 4 operations $121.80–$127.72 0 $0 0 Jun 4, 2026 Jun 8, 2026
Davis J. E. · Director Sell −$1.9M
Price $194.14 Qty −10K Owned 132K Trade date Jun 1, 2026 Filed date Jun 2, 2026
Davis J. E. Director Sell $194.14 −10K −$1.9M 132K Jun 1, 2026 Jun 2, 2026
Carter Robert B. · Director Grant (A) 1K
Owned 4K Trade date May 20, 2026 Filed date May 21, 2026
Carter Robert B. Director Grant (A) 1K 4K May 20, 2026 May 21, 2026
Gregg Vicky B. · Director Grant (A) 1K
Owned 18K Trade date May 20, 2026 Filed date May 21, 2026
Gregg Vicky B. Director Grant (A) 1K 18K May 20, 2026 May 21, 2026
Diaz Luis · Director Grant (A) 1K
Owned 5K Trade date May 20, 2026 Filed date May 21, 2026
Diaz Luis Director Grant (A) 1K 5K May 20, 2026 May 21, 2026
Main Timothy L. · Director Grant (A) 1K
Owned 27K Trade date May 20, 2026 Filed date May 21, 2026
Main Timothy L. Director Grant (A) 1K 27K May 20, 2026 May 21, 2026
Wentworth Timothy C. · Director Grant (A) 1K
Owned 1K Trade date May 20, 2026 Filed date May 21, 2026
Wentworth Timothy C. Director Grant (A) 1K 1K May 20, 2026 May 21, 2026
Doi Tracey · Director Grant (A) 1K
Owned 8K Trade date May 20, 2026 Filed date May 21, 2026
Doi Tracey Director Grant (A) 1K 8K May 20, 2026 May 21, 2026
Ring Timothy M. · Director Grant (A) 1K
Owned 31K Trade date May 20, 2026 Filed date May 21, 2026
Ring Timothy M. Director Grant (A) 1K 31K May 20, 2026 May 21, 2026
Lassiter Wright III · Director Grant (A) 1K
Owned 10K Trade date May 20, 2026 Filed date May 21, 2026
Lassiter Wright III Director Grant (A) 1K 10K May 20, 2026 May 21, 2026
Morrison Denise M. · Director Grant (A) 1K
Owned 12K Trade date May 20, 2026 Filed date May 21, 2026
Morrison Denise M. Director Grant (A) 1K 12K May 20, 2026 May 21, 2026
Pfeiffer Gary M. · Director Grant (A) 1K
Owned 31K Trade date May 20, 2026 Filed date May 21, 2026
Pfeiffer Gary M. Director Grant (A) 1K 31K May 20, 2026 May 21, 2026
Samad Sam · Officer Grant (A) $21K
Price $194.70 Qty 108 Owned 33K Trade date Apr 20, 2026 Filed date Apr 24, 2026
Samad Sam Officer Grant (A) $194.70 108 $21K 33K Apr 20, 2026 Apr 24, 2026
15 of 116
15 of 116 Sign in to continue to older insider transactions.

Quest Diagnostics Incorporated (DGX) activist and large shareholders

Dates
Owner/Filer identity Shares reported % of shares outstanding Filing date
Vanguard Group Inc 13.6M
% of shares outstanding 12.1% Filing date Feb 13, 2024
Vanguard Group Inc 13.6M 12.1% Feb 13, 2024
BlackRock Inc. 10.6M
% of shares outstanding 9.4% Filing date Jan 24, 2024
BlackRock Inc. 10.6M 9.4% Jan 24, 2024
Vanguard Capital Management LLC 8.3M
% of shares outstanding 7.5% Filing date Apr 30, 2026
Vanguard Capital Management LLC 8.3M 7.5% Apr 30, 2026
Vanguard Portfolio Management LLC 6.1M
% of shares outstanding 5.5% Filing date Apr 29, 2026
Vanguard Portfolio Management LLC 6.1M 5.5% Apr 29, 2026
State Street Corp
% of shares outstanding 4.8% Filing date Jan 25, 2024
State Street Corp 4.8% Jan 25, 2024
5 of 5

Quest Diagnostics Incorporated (DGX) ownership FAQ

Who owns DGX?

926 reporting institutions disclosed DGX position changes in the Q1 2026 snapshot.

How is institutional activity calculated?

For each manager, WhoBought compares accepted consecutive 13F share counts. Share change is current shares minus prior shares. Estimated dollar change is that signed share change multiplied by the split-adjusted quarter-mean close. The activity table on this page uses Q1 2026.

What are activist and large shareholder filings?

An investor crossing 5% of a share class generally files Schedule 13D for activist intent or Schedule 13G for a passive position. The technical form names appear here rather than in the activity rows.

Where does this data come from?

Ownership and institutional activity come from SEC Form 13F filings. Insider activity comes from SEC Form 4, and large-shareholder activity from SEC Schedules 13D and 13G. FMP supplies price data only. Company logos use the local verified Parqet cache with one shared fallback.

Why are ownership reports delayed?

Form 13F is a quarterly disclosure and is normally filed after the quarter ends. Every ownership and activity value therefore names its represented period; it is not presented as a live position.

How are missing table values shown?

A muted dash marks a missing table value. It means the filing omitted the value, comparable data is unavailable, or no prior position exists for comparison.