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Quest Diagnostics Inc

DGX
Exchange
NYSE
Industry
Services-Medical Laboratories
SEC CIK
0001022079

In the last 90 days, Quest Diagnostics Inc insiders filed 0 open-market purchases and 3 sales; 1,112 institutions reported holding it in 13F filings for Q2 2026, worth $22.2B in total; no superinvestor holds it.

13F holders, Q4 2025

Institutional positions in Quest Diagnostics Inc as of Dec 31, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
1,050
+59 vs. Q3 2025
Shares held
106.1M
+1.44M (+1.4%) vs. Q3 2025
Total value
$18.4B
−$1.53B (−7.7%) vs. Q3 2025
New holders
149
350 more added
Sold out
90
345 more reduced

15 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q3 2025: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting DGX on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ4 2025: 1,050 institutions
Q1 2021: 818 institutionsQ2 2021: 816 institutionsQ3 2021: 840 institutionsQ4 2021: 906 institutionsQ1 2022: 852 institutionsQ2 2022: 853 institutionsQ3 2022: 809 institutionsQ4 2022: 881 institutionsQ1 2023: 837 institutionsQ2 2023: 820 institutionsQ3 2023: 797 institutionsQ4 2023: 829 institutionsQ1 2024: 818 institutionsQ2 2024: 839 institutionsQ3 2024: 849 institutionsQ4 2024: 896 institutionsQ1 2025: 969 institutionsQ2 2025: 991 institutionsQ3 2025: 1,006 institutionsQ4 2025: 1,050 institutionsQ1 2026: 1,069 institutionsQ2 2026: 1,112 institutions
Value heldQ4 2025: $18.4B
Q1 2021: $14.8BQ2 2021: $15.0BQ3 2021: $15.9BQ4 2021: $18.0BQ1 2022: $14.4BQ2 2022: $13.8BQ3 2022: $12.6BQ4 2022: $15.5BQ1 2023: $14.2BQ2 2023: $14.0BQ3 2023: $12.0BQ4 2023: $13.5BQ1 2024: $13.2BQ2 2024: $13.3BQ3 2024: $15.2BQ4 2024: $15.0BQ1 2025: $17.5BQ2 2025: $19.3BQ3 2025: $20.0BQ4 2025: $18.4BQ1 2026: $20.1BQ2 2026: $22.2B
Institutions holding DGX and their total value by quarter
QuarterHoldersValue
Q2 20261,112$22.2B
Q1 20261,069$20.1B
Q4 20251,050$18.4B
Q3 20251,006$20.0B
Q2 2025991$19.3B
Q1 2025969$17.5B
Q4 2024896$15.0B
Q3 2024849$15.2B
Q2 2024839$13.3B
Q1 2024818$13.2B
Q4 2023829$13.5B
Q3 2023797$12.0B
Q2 2023820$14.0B
Q1 2023837$14.2B
Q4 2022881$15.5B
Q3 2022809$12.6B
Q2 2022853$13.8B
Q1 2022852$14.4B
Q4 2021906$18.0B
Q3 2021840$15.9B
Q2 2021816$15.0B
Q1 2021818$14.8B

Institutions, Q4 2025

Shares, value and share of portfolio for each institution holding Quest Diagnostics Inc; share changes are against Q3 2025.

Institutions holding DGX in Q4 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Maryland State Retirement & Pension System5,774$1.00M0.02%00.0%Unchanged
Gulf International Bank (UK) Ltd5,838$1.01M0.03%00.0%Unchanged
Capital Management Associates, Inc5,900$1.02M0.23%+5,900New
EverSource Wealth Advisors, LLC5,956$1.03M0.04%−67−1.1%Reduced
Generali Investments CEE, investicni spolecnost, a.s.6,000$1.04M0.07%+1,500+33.3%Added
Park Avenue Securities LLC6,007$1.04M0.01%+45+0.8%Added
Arkadios Wealth Advisors6,245$1.08M0.02%+1,377+28.3%Added
YANKCOM Partnership6,246$1.08M0.46%+20+0.3%Added
Siemens Fonds Invest GmbH6,188$1.09M0.06%+2,576+71.3%Added
Pensionfund Sabic6,400$1.11M0.30%00.0%Unchanged
Hartford Investment Management Co6,451$1.12M0.03%−180−2.7%Reduced
Huntington National Bank6,483$1.12M0.01%+532+8.9%Added
Northwest & Ethical Investments L.P.6,549$1.14M0.03%+411+6.7%Added
Merit Financial Group, LLC6,569$1.14M0.01%+685+11.6%Added
Sterling Capital Management LLC6,609$1.15M0.02%−283−4.1%Reduced
Exchange Traded Concepts, LLC6,622$1.15M0.01%−109−1.6%Reduced
Qsemble Capital Management, LP6,645$1.15M0.10%+6,645New
Integrated Quantitative Investments LLC6,659$1.16M0.25%+6,659New
CX Institutional6,700$1.16M0.03%−1,203−15.2%Reduced
Norinchukin Bank, The6,728$1.17M0.01%+413+6.5%Added
Polymer Capital Management (US) LLC6,817$1.18M0.15%+6,817New
Prelude Capital Management, LLC6,886$1.19M0.09%+6,886New
Toroso Investments, LLC6,892$1.20M0.01%+2,826+69.5%Added
Borer Denton & Associates, Inc.6,912$1.20M0.40%00.0%Unchanged
Byrne Asset Management LLC6,928$1.20M0.67%+71+1.0%Added
Vega Investment Solutions6,935$1.20M0.19%+6,935New
Banque Cantonale Vaudoise6,981$1.21M0.04%−8,241−54.1%Reduced
Kentucky Retirement Systems6,999$1.21M0.03%00.0%Unchanged
Union Bancaire Privee, UBP SA8,744$1.22M0.02%+8,744New
Aaron Wealth Advisors7,040$1.22M0.07%−578−7.6%Reduced
Apollon Wealth Management, LLC7,110$1.23M0.02%+376+5.6%Added
Oak Thistle LLC7,132$1.24M0.17%+3,299+86.1%Added
Callan Family Office, LLC7,233$1.26M0.03%+4,924+213.3%Added
Bellevue Group AG7,280$1.26M0.02%−25,735−77.9%Reduced
Hennion & Walsh Asset Management, Inc.7,283$1.26M0.04%+744+11.4%Added
Brown Advisory Inc7,287$1.26M0.00%+71+1.0%Added
Roundview Capital LLC7,422$1.29M0.08%−1,690−18.5%Reduced
Benjamin Edwards Inc7,428$1.29M0.01%+537+7.8%Added
Investment Management Corp of Ontario7,497$1.30M0.02%+2,305+44.4%Added
Needham Investment Management LLC7,500$1.30M0.08%00.0%Unchanged
Keybank National Association7,505$1.30M0.00%−6,745−47.3%Reduced
Laird Norton Trust Company, LLC7,580$1.32M0.03%+7,580New
Hilltop National Bank7,581$1.32M0.32%−91−1.2%Reduced
Miller Investment Management, LP7,586$1.32M0.13%00.0%Unchanged
Sciencast Management LP7,588$1.32M0.18%−12,752−62.7%Reduced
Custom Index Systems, LLC7,705$1.34M0.59%−3,954−33.9%Reduced
O'Shaughnessy Asset Management, LLC7,806$1.35M0.01%+252+3.3%Added
Agp Franklin, LLC7,950$1.38M0.65%+486+6.5%Added
Parsons Capital Management Inc7,973$1.38M0.08%00.0%Unchanged
Integrity Alliance, LLC.7,977$1.38M0.05%−804−9.2%Reduced
B. Metzler seel. Sohn & Co. AG8,036$1.39M0.01%+1,305+19.4%Added
ASR Vermogensbeheer N.V.8,106$1.41M0.02%−91−1.1%Reduced
Crossmark Global Holdings, Inc.8,503$1.48M0.02%+2,956+53.3%Added
Everence Capital Management Inc8,530$1.48M0.09%00.0%Unchanged
Allstate Corp8,688$1.51M0.02%+3,786+77.2%Added
Private Capital Management, LLC8,700$1.51M0.14%00.0%Unchanged
Teachers Retirement System of the State of Kentucky8,736$1.52M0.01%00.0%Unchanged
Highview Capital Management LLC8,818$1.53M0.54%+2,613+42.1%Added
MML Investors Services, LLC8,819$1.53M0.00%+597+7.3%Added
Mizuho Securities USA LLC8,100$1.53M0.03%−44−0.5%Reduced
Fifth Third Bancorp8,863$1.54M0.00%−720−7.5%Reduced
HighPoint Advisor Group LLC8,891$1.54M0.03%+1,926+27.7%Added
Federation des caisses Desjardins du Quebec8,957$1.55M0.01%+4,356+94.7%Added
Ashton Thomas Private Wealth, LLC8,964$1.56M0.04%+473+5.6%Added
BI Asset Management Fondsmaeglerselskab A/S9,042$1.57M0.01%+219+2.5%Added
Somerset Trust Co9,111$1.58M0.48%+29+0.3%Added
Ameritas Investment Partners, Inc.9,118$1.58M0.05%−580−6.0%Reduced
American National Bank9,156$1.59M0.15%−958−9.5%Reduced
We Are One Seven, LLC9,166$1.59M0.03%+233+2.6%Added
Thoroughbred Financial Services, LLC9,210$1.60M0.09%−285−3.0%Reduced
Naples Global Advisors, LLC9,237$1.60M0.12%−150−1.6%Reduced
Avanza Fonder AB9,369$1.63M0.04%00.0%Unchanged
VCI Wealth Management LLC9,423$1.64M0.45%+9,423New
Great Lakes Retirement, Inc.9,423$1.64M0.17%+393+4.4%Added
Arjuna Capital9,463$1.64M0.40%+328+3.6%Added
Fort Washington Investment Advisors Inc9,509$1.65M0.01%+245+2.6%Added
Brinker Capital Investments, LLC9,557$1.66M0.01%−4,410−31.6%Reduced
Taproot Management LP9,594$1.66M0.27%+9,594New
Fox Run Management, L.L.C.9,690$1.68M0.26%+9,690New
TriaGen Wealth Management LLC9,943$1.73M0.45%−64−0.6%Reduced
Assetmark, Inc9,979$1.73M0.00%+191+2.0%Added
Dynasty Wealth Management, LLC10,159$1.76M0.02%+411+4.2%Added
Zevenbergen Capital Investments LLC10,420$1.81M0.04%+1,185+12.8%Added
Cozad Asset Management Inc10,507$1.82M0.14%+10,507New
Machina Capital S.A.S.10,613$1.84M0.35%+10,613New
Primoris Wealth Advisors, LLC12,500$1.87M1.12%+12,500New
Caldwell Trust Co10,879$1.89M0.17%+3,085+39.6%Added
Public Employees Retirement Association of Colorado10,891$1.89M0.01%00.0%Unchanged
Peapack Gladstone Financial Corp11,015$1.91M0.02%−97−0.9%Reduced
State of Alaska, Department of Revenue11,037$1.92M0.02%−930−7.8%Reduced
HM Payson & Co11,251$1.95M0.03%00.0%Unchanged
HB Wealth Management, LLC11,292$1.96M0.01%+58+0.5%Added
Acumen Wealth Advisors, LLC11,322$1.96M0.57%+11,322New
Entropy Technologies, LP11,380$1.97M0.11%+11,380New
iA Global Asset Management Inc.11,451$1.99M0.03%+11,365+13,215.1%Added
Zurich Insurance Group Ltd11,500$2.00M0.01%00.0%Unchanged
ICW Investment Advisors LLC11,582$2.01M0.73%+132+1.2%Added
Summit Trail Advisors, LLC11,637$2.02M0.03%−643−5.2%Reduced
Roberts Glore & Co Inc11,693$2.03M0.54%−442−3.6%Reduced
XTX Topco Ltd11,730$2.04M0.05%+4,001+51.8%Added