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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
KBC Group NV56,314$9.77M0.02%+3,560+6.7%Added
First National Bank of Omaha60,199$10.5M0.31%+13,867+29.9%Added
Vontobel Holding Ltd.60,764$10.5M0.03%−3,796−5.9%Reduced
Danica Pension, Livsforsikringsaktieselskab61,346$10.6M0.15%−9,500−13.4%Reduced
Exencial Wealth Advisors, LLC62,120$10.8M0.34%−1,292−2.0%Reduced
Becker Capital Management Inc62,166$10.8M0.31%−1,951−3.0%Reduced
Nordea Investment Management AB63,531$11.1M0.01%+218+0.3%Added
Public Employees Retirement System of Ohio64,442$11.2M0.03%−4,015−5.9%Reduced
Allianz Asset Management GmbH64,706$11.2M0.01%−93,144−59.0%Reduced
Bank of Nova Scotia66,462$11.5M0.02%+50,471+315.6%Added
AQR Capital Management LLC67,217$11.7M0.01%+17,149+34.3%Added
Hancock Whitney Corp68,352$11.9M0.21%+679+1.0%Added
Alpha Cubed Investments, LLC69,931$12.1M0.42%−1,259−1.8%Reduced
SEI Investments Co71,563$12.4M0.01%−6,734−8.6%Reduced
Abn Amro Investment Solutions72,262$12.5M0.19%−8,519−10.5%Reduced
Integral Health Asset Management, LLC75,000$13.0M0.66%−10,000−11.8%Reduced
Danske Bank A/S75,161$13.0M0.03%+11,200+17.5%Added
Lazard Asset Management LLC75,834$13.2M0.02%+72,228+2,003.0%Added
State of Wisconsin Investment Board76,269$13.2M0.03%−8,139−9.6%Reduced
Boston Common Asset Management, LLC77,289$13.4M0.81%−16,756−17.8%Reduced
Mitsubishi UFJ Trust & Banking Corp77,584$13.5M0.03%−154−0.2%Reduced
Brandywine Global Investment Management, LLC78,605$13.6M0.09%−623−0.8%Reduced
Paradiem, LLC78,670$13.7M3.27%+78,670New
Gotham Asset Management, LLC79,395$13.8M0.05%+24,701+45.2%Added
Man Group plc80,190$13.9M0.03%+77,686+3,102.5%Added
Zurcher Kantonalbank (Zurich Cantonalbank)80,779$14.0M0.03%+44,780+124.4%Added
JGP Wealth Management, LLC81,557$14.2M1.48%−662−0.8%Reduced
LPL Financial LLC83,386$14.5M0.00%−2,024−2.4%Reduced
Chevy Chase Trust Holdings, Inc.85,547$14.8M0.04%−1,545−1.8%Reduced
New York State Teachers Retirement System86,493$15.0M0.03%−240.0%Reduced
Glenmede Trust Co NA88,576$15.4M0.07%+88,576New
ABN AMRO Bank N.V.88,982$15.4M0.14%−503−0.6%Reduced
CSM Advisors, LLC88,713$15.4M0.42%+7,044+8.6%Added
Distillate Capital Partners LLC88,756$15.4M0.79%+88,756New
Kames Capital plc90,605$15.7M0.19%−27,786−23.5%Reduced
Canada Pension Plan Investment Board90,700$15.7M0.01%+90,700New
Manufacturers Life Insurance Company, The90,762$15.8M0.01%−36,695−28.8%Reduced
CIBC Asset Management Inc92,129$16.0M0.04%+10,478+12.8%Added
Marshall Wace, LLP93,217$16.2M0.02%−463,938−83.3%Reduced
Payden & Rygel93,400$16.2M1.13%−800−0.8%Reduced
Swedbank AB93,468$16.2M0.02%+8,605+10.1%Added
Aviva PLC94,857$16.5M0.03%+1,852+2.0%Added
Midwest Trust Co95,500$16.6M0.21%+927+1.0%Added
Schwartz Investment Counsel Inc95,900$16.6M0.58%00.0%Unchanged
Russell Investments Group, Ltd.96,049$16.7M0.02%−3,828−3.8%Reduced
State Board of Administration of Florida Retirement System96,864$16.8M0.03%00.0%Unchanged
Natixis Advisors, L.P.97,002$16.8M0.02%−30,362−23.8%Reduced
Mercer Global Advisors Inc97,627$16.9M0.03%+4,805+5.2%Added
Treasurer of the State of North Carolina98,800$17.1M0.05%−15,176−13.3%Reduced
National Bank of Canada99,792$17.3M0.02%+43,270+76.6%Added
Wellington Management Group LLP100,146$17.4M0.00%−1,341,737−93.1%Reduced
Point72 Asset Management, L.P.100,301$17.4M0.03%+100,301New
Voya Investment Management LLC101,628$17.6M0.02%−51,781−33.8%Reduced
Candriam Luxembourg S.C.A.101,727$17.7M0.09%+29,908+41.6%Added
Blair William & Co103,375$17.9M0.05%+5,457+5.6%Added
Moran Wealth Management, LLC104,064$18.1M0.55%−1,087−1.0%Reduced
Standard Life Aberdeen plc104,886$18.2M0.03%−775−0.7%Reduced
Mackenzie Financial Corp104,846$18.4M0.02%−52,509−33.4%Reduced
Tocqueville Asset Management L.P.109,219$19.0M0.28%−340−0.3%Reduced
Robeco Institutional Asset Management B.V.109,514$19.0M0.03%−1,940−1.7%Reduced
Wiley Bros.-Aintree Capital, LLC111,102$19.3M0.10%+10,088+10.0%Added
Silvercrest Asset Management Group LLC112,251$19.5M0.13%+2,910+2.7%Added
Stifel Financial Corp113,022$19.6M0.02%+80+0.1%Added
Universal- Beteiligungs- und Servicegesellschaft mbH119,869$20.9M0.03%−67,214−35.9%Reduced
Virginia Retirement Systems Et Al123,876$21.5M0.13%00.0%Unchanged
Achmea Investment Management B.V.137,988$23.9M0.61%−6,221−4.3%Reduced
Skandinaviska Enskilda Banken AB (publ)139,936$24.3M0.10%−21,980−13.6%Reduced
Storebrand Asset Management AS142,908$24.8M0.07%00.0%Unchanged
Willis Investment Counsel151,800$26.3M1.36%00.0%Unchanged
Credit Agricole S A152,308$26.4M0.07%+95,477+168.0%Added
Braun Stacey Associates Inc153,854$26.7M0.87%−515−0.3%Reduced
Colony Group, LLC153,982$26.7M0.03%+12,625+8.9%Added
Copeland Capital Management, LLC159,637$27.7M0.62%−8,738−5.2%Reduced
Cookson Peirce & Co Inc161,503$28.0M1.16%−2,275−1.4%Reduced
Pictet Asset Management Holding SA162,253$28.2M0.03%−47,663−22.7%Reduced
California State Teachers Retirement System168,001$29.2M0.03%−4,711−2.7%Reduced
Healthcare of Ontario Pension Plan Trust Fund168,397$29.2M0.05%+163,970+3,703.9%Added
APG Asset Management N.V.197,892$29.2M0.08%−15,080−7.1%Reduced
Antipodes Partners Ltd171,987$29.8M0.63%+110,280+178.7%Added
Conning Inc.173,262$30.1M1.01%+173,262New
Kempen Capital Management N.V.175,146$30.4M0.26%−166,507−48.7%Reduced
SG Americas Securities, LLC179,653$31.2M0.04%+157,031+694.2%Added
Bahl & Gaynor Inc187,288$32.5M0.16%−29,416−13.6%Reduced
Acadian Asset Management LLC190,975$33.1M0.05%+188,181+6,735.2%Added
Bank of Montreal217,384$37.7M0.02%+14,782+7.3%Added
BNP PARIBAS ASSET MANAGEMENT Holding S.A.225,294$39.1M0.05%−60,768−21.2%Reduced
HSBC Holdings PLC227,107$39.5M0.02%+14,361+6.8%Added
BNP Paribas Arbitrage, SA228,057$39.6M0.03%+6,487+2.9%Added
Royal Bank of Canada228,731$39.7M0.01%−243,498−51.6%Reduced
Mitsubishi UFJ Kokusai Asset Management Co., Ltd.229,410$39.9M0.03%+5,038+2.2%Added
Nomura Asset Management International Inc.246,054$42.7M0.06%+246,054New
Eurizon Capital SGR S.p.A.249,182$43.2M0.13%+249,182New
Schroder Investment Management Group257,380$45.2M0.03%−57,065−18.1%Reduced
Quantinno Capital Management LP269,597$46.8M0.09%+76,083+39.3%Added
Rhumbline Advisers276,463$48.0M0.04%+2,017+0.7%Added
Sumitomo Mitsui Trust Holdings, Inc.277,183$48.1M0.03%−1,469−0.5%Reduced
Jane Street Group, LLC292,734$50.8M0.06%+219,577+300.1%Added
Swiss National Bank306,500$53.2M0.03%−15,300−4.8%Reduced
Freestone Grove Partners LP309,214$53.7M0.39%+309,214New
Citigroup Inc309,817$53.8M0.04%−9,537−3.0%Reduced