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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, Q3 2025

Institutional positions in Quest Diagnostics Inc as of Sep 30, 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
1,006
+34 vs. Q2 2025
Shares held
105.0M
−1.02M (−1.0%) vs. Q2 2025
Total value
$20.0B
+$944.3M (+5.0%) vs. Q2 2025
New holders
115
359 more added
Sold out
81
342 more reduced

19 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q2 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 holdersQ3 2025: 1,006 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 heldQ3 2025: $20.0B
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, Q3 2025

Shares, value and share of portfolio for each institution holding Quest Diagnostics Inc; share changes are against Q2 2025.

Institutions holding DGX in Q3 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Blair William & Co97,918$18.7M0.05%+6,709+7.4%Added
State Board of Administration of Florida Retirement System96,864$18.5M0.03%−7,761−7.4%Reduced
Schwartz Investment Counsel Inc95,900$18.3M0.61%00.0%Unchanged
Midwest Trust Co94,573$18.0M0.23%−5,691−5.7%Reduced
Payden & Rygel94,200$18.0M1.51%+600+0.6%Added
Boston Common Asset Management, LLC94,045$17.9M0.50%+19,795+26.7%Added
Aviva PLC93,005$17.7M0.03%+3,589+4.0%Added
Mercer Global Advisors Inc92,822$17.7M0.03%+8,217+9.7%Added
Glenmede Investment Management, LP90,031$17.2M0.08%−1,645−1.8%Reduced
ABN AMRO Bank N.V.89,485$17.0M0.17%−1,713−1.9%Reduced
Coho Partners, Ltd.89,103$17.0M2.18%−65,380−42.3%Reduced
Chevy Chase Trust Holdings, Inc.87,092$16.6M0.05%−5,651−6.1%Reduced
New York State Teachers Retirement System86,517$16.5M0.03%−180.0%Reduced
LPL Financial LLC85,410$16.3M0.00%+7,160+9.2%Added
Integral Health Asset Management, LLC85,000$16.2M1.18%−65,000−43.3%Reduced
Swedbank AB84,863$16.2M0.02%00.0%Unchanged
State of Wisconsin Investment Board84,408$16.1M0.04%−5,263−5.9%Reduced
Artia Global Partners LP81,717$15.6M2.74%00.0%Unchanged
CSM Advisors, LLC81,669$15.6M0.44%−20,078−19.7%Reduced
CIBC Asset Management Inc81,651$15.5M0.05%+750+0.9%Added
Abn Amro Investment Solutions80,781$15.4M0.32%−15,567−16.2%Reduced
Brandywine Global Investment Management, LLC79,228$15.1M0.10%+400+0.5%Added
SEI Investments Co78,297$14.9M0.02%+166+0.2%Added
JGP Wealth Management, LLC82,219$14.9M1.65%−183−0.2%Reduced
Mitsubishi UFJ Trust & Banking Corp77,738$14.8M0.03%−1,156−1.5%Reduced
Pathstone Holdings, LLC75,168$14.3M0.05%+587+0.8%Added
Jane Street Group, LLC73,157$13.9M0.02%+65,346+836.6%Added
Candriam Luxembourg S.C.A.71,819$13.7M0.07%−193,952−73.0%Reduced
Alpha Cubed Investments, LLC71,190$13.6M0.47%+66,975+1,589.0%Added
Danica Pension, Livsforsikringsaktieselskab70,846$13.5M0.21%00.0%Unchanged
Public Employees Retirement System of Ohio68,457$13.0M0.04%+289+0.4%Added
Hancock Whitney Corp67,673$12.9M0.23%+567+0.8%Added
Verition Fund Management LLC65,443$12.5M0.07%+17,691+37.0%Added
Vontobel Holding Ltd.64,560$12.3M0.04%−2,034−3.1%Reduced
Becker Capital Management Inc64,117$12.2M0.36%−1,135−1.7%Reduced
Danske Bank A/S63,961$12.2M0.03%+900+1.4%Added
Exencial Wealth Advisors, LLC63,412$12.1M0.39%−581−0.9%Reduced
Nordea Investment Management AB63,313$12.1M0.01%−164,099−72.2%Reduced
Prudential Financial Inc62,966$12.0M0.01%−854−1.3%Reduced
Antipodes Partners Ltd61,707$11.8M0.26%+60,707+6,070.7%Added
Credit Agricole S A56,831$10.8M0.04%+56,831New
National Bank of Canada56,522$10.8M0.01%−45,696−44.7%Reduced
Commonwealth Equity Services, LLC55,968$10.7M0.01%−2,651−4.5%Reduced
Gotham Asset Management, LLC54,694$10.4M0.05%+24,881+83.5%Added
New York State Common Retirement Fund52,863$10.1M0.01%−200−0.4%Reduced
KBC Group NV52,754$10.1M0.02%−176−0.3%Reduced
Heartland Advisors Inc50,007$9.53M0.50%−1,588−3.1%Reduced
AQR Capital Management LLC50,068$9.51M0.01%+651+1.3%Added
Franklin Resources Inc49,290$9.39M0.00%−90,839−64.8%Reduced
Prudential PLC49,277$9.39M0.07%+5,677+13.0%Added
Nomura Asset Management Co Ltd48,648$9.27M0.02%+2,392+5.2%Added
Capital Fund Management S.A.47,875$9.12M0.09%+18,241+61.6%Added
Sit Investment Associates Inc47,798$9.11M0.18%−10,045−17.4%Reduced
Hilton Capital Management, LLC47,338$9.02M0.73%−3,378−6.7%Reduced
First National Bank of Omaha46,332$8.83M0.56%+10,813+30.4%Added
Asset Management One Co.,Ltd.45,794$8.73M0.03%−173−0.4%Reduced
Knights of Columbus Asset Advisors LLC44,969$8.57M0.49%−3,951−8.1%Reduced
Resona Asset Management Co.,Ltd.44,143$8.40M0.04%−1,458−3.2%Reduced
Royal London Asset Management Ltd44,035$8.39M0.02%−3,842−8.0%Reduced
Intech Investment Management LLC43,590$8.31M0.07%−4,186−8.8%Reduced
Truist Financial Corp43,542$8.30M0.01%−10,432−19.3%Reduced
Atwater Malick LLC42,942$8.18M2.38%−13,724−24.2%Reduced
Fjarde Ap-Fonden /Fourth Swedish National Pension Fund42,620$8.12M0.07%−2,600−5.7%Reduced
Aquatic Capital Management LLC42,279$8.06M0.15%−30,050−41.5%Reduced
Mn Services Vermogensbeheer B.V.41,845$7.97M0.05%+500+1.2%Added
Toronto Dominion Bank41,121$7.84M0.02%−4,160−9.2%Reduced
HighTower Advisors, LLC40,750$7.77M0.01%+1,814+4.7%Added
Cerity Partners LLC40,512$7.72M0.01%−3,345−7.6%Reduced
Olstein Capital Management, L.P.40,000$7.62M1.44%00.0%Unchanged
Ensign Peak Advisors, Inc39,761$7.58M0.01%−8,040−16.8%Reduced
GHP Investment Advisors, Inc.39,255$7.48M0.31%−1,247−3.1%Reduced
KLP Kapitalforvaltning AS39,103$7.45M0.03%00.0%Unchanged
Te Ahumairangi Investment Management Ltd38,458$7.33M1.25%−1,540−3.9%Reduced
Mariner, LLC38,300$7.30M0.01%−10,900−22.2%Reduced
Oppenheimer & Co Inc37,769$7.20M0.09%+60.0%Added
Handelsbanken Fonder AB37,409$7.13M0.02%+2,811+8.1%Added
State of New Jersey Common Pension Fund D37,272$7.10M0.03%+2,580+7.4%Added
The PNC Financial Services Group, Inc.36,847$7.02M0.00%−4,265−10.4%Reduced
TD Waterhouse Canada Inc.38,340$6.98M0.05%+3,156+9.0%Added
Capital Wealth Planning, LLC36,493$6.95M0.05%−302−0.8%Reduced
Zurcher Kantonalbank (Zurich Cantonalbank)35,999$6.86M0.02%+3,121+9.5%Added
Point72 (DIFC) Ltd35,400$6.75M0.47%+35,400New
Level Four Advisory Services, LLC34,735$6.62M0.23%+627+1.8%Added
Bellevue Group AG33,015$6.29M0.13%−15,552−32.0%Reduced
Arizona State Retirement System32,909$6.27M0.03%+287+0.9%Added
Thompson Siegel & Walmsley LLC32,655$6.22M0.10%+32,655New
Tredje AP-fonden32,591$6.21M0.05%+2,490+8.3%Added
American Assets Investment Management, LLC32,000$6.10M0.45%00.0%Unchanged
Trillium Asset Management, LLC31,202$5.95M0.16%−1,207−3.7%Reduced
Ostrum Asset Management30,635$5.84M0.26%+1,890+6.6%Added
State of Michigan Retirement System30,221$5.76M0.03%−100−0.3%Reduced
Nuance Investments, LLC30,207$5.76M0.59%+30,207New
Korea Investment CORP29,829$5.68M0.01%−14,900−33.3%Reduced
Boston Trust Walden Corp29,594$5.64M0.04%−53,026−64.2%Reduced
Argent Trust Co29,504$5.62M0.20%−2,392−7.5%Reduced
Cetera Investment Advisers29,303$5.58M0.01%+5,462+22.9%Added
Ivy Lane Capital Management, LLC29,000$5.53M6.18%−21,000−42.0%Reduced
Canada Post Corp Registered Pension Plan28,800$5.44M0.24%+16,365+131.6%Added
Czech National Bank28,401$5.41M0.04%+1,114+4.1%Added
MetLife Investment Management27,736$5.29M0.03%−704−2.5%Reduced