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, Q1 2026
Institutional positions in Quest Diagnostics Inc as of Mar 31, 2026. 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
- 1,069
- +36 vs. Q4 2025
- Shares held
- 102.6M
- +12.5M (+13.8%) vs. Q4 2025
- Total value
- $20.1B
- +$4.48B (+28.7%) vs. Q4 2025
- New holders
- 123
- 352 more added
- Sold out
- 87
- 382 more reduced
17 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 1,112 | $22.2B |
| Q1 2026 | 1,069 | $20.1B |
| Q4 2025 | 1,050 | $18.4B |
| Q3 2025 | 1,006 | $20.0B |
| Q2 2025 | 991 | $19.3B |
| Q1 2025 | 969 | $17.5B |
| Q4 2024 | 896 | $15.0B |
| Q3 2024 | 849 | $15.2B |
| Q2 2024 | 839 | $13.3B |
| Q1 2024 | 818 | $13.2B |
| Q4 2023 | 829 | $13.5B |
| Q3 2023 | 797 | $12.0B |
| Q2 2023 | 820 | $14.0B |
| Q1 2023 | 837 | $14.2B |
| Q4 2022 | 881 | $15.5B |
| Q3 2022 | 809 | $12.6B |
| Q2 2022 | 853 | $13.8B |
| Q1 2022 | 852 | $14.4B |
| Q4 2021 | 906 | $18.0B |
| Q3 2021 | 840 | $15.9B |
| Q2 2021 | 816 | $15.0B |
| Q1 2021 | 818 | $14.8B |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding Quest Diagnostics Inc; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock, Inc. | 9,172,292 | $1.80B | 0.03% | −286,926−3.0% | Reduced |
| Vanguard Capital Management LLC | 7,145,672 | $1.40B | 0.03% | +7,145,672 | New |
| Price T Rowe Associates Inc | 6,297,987 | $1.23B | 0.14% | +8300.0% | Added |
| Vanguard Portfolio Management LLC | 6,081,400 | $1.19B | 0.06% | +6,081,400 | New |
| State Street Corp | 5,380,821 | $1.05B | 0.04% | −1,7260.0% | Reduced |
| Boston Partners | 4,012,232 | $786.7M | 0.82% | +98,906+2.5% | Added |
| JPMorgan Chase & Co | 3,846,456 | $758.4M | 0.05% | −299,440−7.2% | Reduced |
| Geode Capital Management, LLC | 3,086,308 | $602.7M | 0.04% | +58,101+1.9% | Added |
| Morgan Stanley | 2,479,720 | $486.0M | 0.03% | −213,848−7.9% | Reduced |
| EdgePoint Investment Group Inc. | 2,243,869 | $439.8M | 3.53% | +582,797+35.1% | Added |
| Dimensional Fund Advisors LP | 1,949,535 | $382.1M | 0.08% | +17,987+0.9% | Added |
| Grantham, Mayo, Van Otterloo & Co. LLC | 1,883,024 | $369.0M | 0.94% | +66,964+3.7% | Added |
| Victory Capital Management Inc | 1,846,336 | $361.8M | 0.23% | −280,086−13.2% | Reduced |
| Wells Fargo & Company | 1,762,769 | $345.5M | 0.07% | −6,324−0.4% | Reduced |
| Bank of America Corp | 1,752,902 | $343.5M | 0.03% | +129,964+8.0% | Added |
| Invesco Ltd. | 1,638,487 | $321.1M | 0.03% | −28,492−1.7% | Reduced |
| Davis Selected Advisers | 1,617,813 | $317.1M | 1.46% | +27,930+1.8% | Added |
| Goldman Sachs Group Inc | 1,348,694 | $264.3M | 0.03% | −360,231−21.1% | Reduced |
| Northern Trust Corp | 1,114,219 | $218.4M | 0.03% | +35,646+3.3% | Added |
| FMR LLC | 942,218 | $184.7M | 0.01% | −260,036−21.6% | Reduced |
| American Century Companies Inc | 867,331 | $170.0M | 0.09% | −3,169−0.4% | Reduced |
| UBS Asset Management Americas Inc | 846,603 | $165.9M | 0.03% | −3320.0% | Reduced |
| Ameriprise Financial Inc | 807,477 | $158.3M | 0.04% | −5,977−0.7% | Reduced |
| M&G Plc | 805,341 | $157.8M | 0.82% | −139,711−14.8% | Reduced |
| DekaBank Deutsche Girozentrale | 748,680 | $149.2M | 0.25% | 00.0% | Unchanged |
| Charles Schwab Investment Management Inc | 760,790 | $149.1M | 0.02% | +9,736+1.3% | Added |
| Legal & General Group Plc | 736,625 | $144.4M | 0.03% | −6,349−0.9% | Reduced |
| Qube Research & Technologies Ltd | 734,714 | $144.0M | 0.20% | +1,258+0.2% | Added |
| Fiduciary Management Inc | 720,986 | $141.3M | 1.75% | −325,935−31.1% | Reduced |
| UBS Group AG | 702,337 | $137.6M | 0.02% | −412,114−37.0% | Reduced |
| Bank of New York Mellon Corp | 655,961 | $128.6M | 0.02% | −14,780−2.2% | Reduced |
| Vanguard Fiduciary Trust Co | 619,180 | $121.3M | 0.03% | +619,180 | New |
| Alliancebernstein L.P. | 681,158 | $118.2M | 0.04% | +48,751+7.7% | Added |
| Woodline Partners LP | 593,744 | $116.4M | 0.44% | +252,372+73.9% | Added |
| Barclays PLC | 565,470 | $110.8M | 0.04% | +232,168+69.7% | Added |
| Deutsche Bank AG | 550,899 | $108.0M | 0.04% | −58,182−9.6% | Reduced |
| Principal Financial Group Inc | 526,033 | $103.1M | 0.06% | −5,253−1.0% | Reduced |
| Crawford Investment Counsel Inc | 486,433 | $95.3M | 1.63% | −10,066−2.0% | Reduced |
| Nuveen, LLC | 465,425 | $91.2M | 0.02% | +131,391+39.3% | Added |
| Raymond James Financial Inc | 458,455 | $89.8M | 0.03% | −4,827−1.0% | Reduced |
| Artemis Investment Management LLP | 447,274 | $87.7M | 0.93% | −13,451−2.9% | Reduced |
| Pacer Advisors, Inc. | 425,895 | $83.5M | 0.24% | −21,832−4.9% | Reduced |
| Envestnet Asset Management Inc | 412,436 | $80.8M | 0.02% | +78,633+23.6% | Added |
| Amundi | 408,330 | $80.0M | 0.02% | −55,834−12.0% | Reduced |
| Citadel Advisors LLC | 347,218 | $68.0M | 0.05% | −78,018−18.3% | Reduced |
| Squarepoint Ops LLC | 345,788 | $67.8M | 0.15% | −220,012−38.9% | Reduced |
| First Trust Advisors LP | 329,152 | $64.5M | 0.05% | −22,557−6.4% | Reduced |
| Advisors Capital Management, LLC | 327,251 | $64.1M | 0.75% | +13,413+4.3% | Added |
| Swiss National Bank | 326,500 | $64.0M | 0.04% | +20,000+6.5% | Added |
| Great West Life Assurance Co | 305,691 | $60.1M | 0.11% | −13,602−4.3% | Reduced |
| M.D. Sass Investors Services, Inc. | 299,459 | $58.7M | 4.45% | +299,459 | New |
| Schroder Investment Management Group | 295,035 | $58.2M | 0.05% | +37,655+14.6% | Added |
| Citigroup Inc | 287,123 | $56.3M | 0.04% | −22,694−7.3% | Reduced |
| BNP Paribas Arbitrage, SA | 270,281 | $53.0M | 0.03% | +42,224+18.5% | Added |
| Sumitomo Mitsui Trust Holdings, Inc. | 264,754 | $51.9M | 0.03% | −12,429−4.5% | Reduced |
| Rhumbline Advisers | 263,347 | $51.6M | 0.04% | −13,116−4.7% | Reduced |
| Kempen Capital Management N.V. | 256,298 | $50.2M | 0.44% | +81,152+46.3% | Added |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 251,441 | $49.3M | 0.03% | +22,031+9.6% | Added |
| Vanguard Global Advisers, LLC | 242,525 | $47.5M | 0.03% | +242,525 | New |
| Eurizon Capital SGR S.p.A. | 240,816 | $47.2M | 0.15% | −8,366−3.4% | Reduced |
| Acadian Asset Management LLC | 239,432 | $46.9M | 0.07% | +48,457+25.4% | Added |
| California Public Employees Retirement System | 237,792 | $46.6M | 0.03% | −112,457−32.1% | Reduced |
| Clark Capital Management Group, Inc. | 235,422 | $46.1M | 0.28% | +235,422 | New |
| Quantinno Capital Management LP | 231,025 | $45.3M | 0.08% | −38,572−14.3% | Reduced |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 230,934 | $45.3M | 0.05% | +5,640+2.5% | Added |
| Vanguard Asset Management, Ltd | 226,730 | $44.4M | 0.04% | +226,730 | New |
| SG Americas Securities, LLC | 217,286 | $42.6M | 0.05% | +37,633+20.9% | Added |
| Nomura Asset Management International Inc. | 212,180 | $41.6M | 0.07% | −33,874−13.8% | Reduced |
| Bank of Montreal | 210,365 | $41.2M | 0.02% | −7,019−3.2% | Reduced |
| Marshall Wace, LLP | 200,278 | $39.3M | 0.04% | +107,061+114.9% | Added |
| Royal Bank of Canada | 198,534 | $38.9M | 0.01% | −30,197−13.2% | Reduced |
| HSBC Holdings PLC | 195,144 | $38.2M | 0.02% | −31,963−14.1% | Reduced |
| Voya Investment Management LLC | 186,175 | $36.5M | 0.04% | +84,547+83.2% | Added |
| Conning Inc. | 175,906 | $34.5M | 1.15% | +2,644+1.5% | Added |
| Healthcare of Ontario Pension Plan Trust Fund | 170,912 | $33.5M | 0.06% | +2,515+1.5% | Added |
| Antipodes Partners Ltd | 162,589 | $31.9M | 0.61% | −9,398−5.5% | Reduced |
| California State Teachers Retirement System | 162,238 | $31.8M | 0.03% | −5,763−3.4% | Reduced |
| Braun Stacey Associates Inc | 156,832 | $30.7M | 1.02% | +2,978+1.9% | Added |
| Cookson Peirce & Co Inc | 156,342 | $30.6M | 1.30% | −5,161−3.2% | Reduced |
| Copeland Capital Management, LLC | 155,348 | $30.4M | 0.68% | −4,289−2.7% | Reduced |
| Willis Investment Counsel | 151,800 | $29.7M | 1.62% | 00.0% | Unchanged |
| Colony Group, LLC | 150,856 | $29.6M | 0.03% | −3,126−2.0% | Reduced |
| Credit Agricole S A | 148,560 | $29.1M | 0.10% | −3,748−2.5% | Reduced |
| D. E. Shaw & Co., Inc. | 147,727 | $29.0M | 0.02% | −181,007−55.1% | Reduced |
| Storebrand Asset Management AS | 140,574 | $27.5M | 0.08% | −2,334−1.6% | Reduced |
| SEB Asset Management AB | 139,951 | $27.4M | 0.12% | +139,951 | New |
| Achmea Investment Management B.V. | 137,119 | $26.9M | 0.71% | −869−0.6% | Reduced |
| APG Asset Management N.V. | 153,939 | $26.2M | 0.08% | −43,953−22.2% | Reduced |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 131,935 | $25.8M | 0.04% | +12,066+10.1% | Added |
| Gotham Asset Management, LLC | 130,777 | $25.6M | 0.08% | +51,382+64.7% | Added |
| Mackenzie Financial Corp | 126,510 | $24.8M | 0.03% | +21,664+20.7% | Added |
| Wiley Bros.-Aintree Capital, LLC | 122,183 | $24.0M | 0.12% | +11,081+10.0% | Added |
| Franklin Resources Inc | 121,667 | $23.8M | 0.01% | +75,399+163.0% | Added |
| Silvercrest Asset Management Group LLC | 114,758 | $22.5M | 0.16% | +2,507+2.2% | Added |
| Robeco Institutional Asset Management B.V. | 112,412 | $22.0M | 0.03% | +2,898+2.6% | Added |
| Stifel Financial Corp | 112,033 | $22.0M | 0.02% | −989−0.9% | Reduced |
| LPL Financial LLC | 110,753 | $21.7M | 0.01% | +27,367+32.8% | Added |
| Standard Life Aberdeen plc | 108,671 | $21.3M | 0.03% | +3,785+3.6% | Added |
| Moran Wealth Management, LLC | 108,351 | $21.2M | 0.65% | +4,287+4.1% | Added |
| Tocqueville Asset Management L.P. | 107,479 | $21.1M | 0.31% | −1,740−1.6% | Reduced |