Quest DiagnosticsDGX
13F holders, Q1 2026 (March 31)1,069holders +19
104new positions
84sold out
9famous investors
$195.83avg. 13F price*
At the end of Q1 2026, 1,069 institutions reported holding Quest Diagnostics Inc. (DGX) in their 13F filings, up 19 from Q4 2025. 104 opened new positions and 84 sold out. The largest holders were BlackRock, Inc. ($1.8B), Vanguard Capital Management LLC ($1.4B) and T. Rowe Price Associates Inc. ($1.2B). 9 famous investors held it, including Jeremy Grantham (0.9% of GMO's portfolio), Joel Greenblatt (0.1% of Gotham Asset Management's portfolio) and Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- Quest Diagnostics Inc.
- Sector
- Health Care
- CUSIP
- 74834L100
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 104 | $196.3M |
| Exits | 84 | $129.4M |
All 13F filers, Q4 2025 → Q1 2026: 4,298,505 shares bought and 6,365,353 shares sold, net −2,066,848 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 1,069 holders
| BlackRock, Inc. | 0.03% | Reduce -3.0% | 9,172,292 | $1.8B |
| Vanguard Capital Management LLC | 0.03% | — | 7,145,672 | $1.4B |
| T. Rowe Price Associates Inc. | 0.14% | Add +0.0% | 6,297,987 | $1.2B |
| Vanguard Portfolio Management LLC | 0.06% | — | 6,081,400 | $1.2B |
| State Street Corp. | 0.04% | Reduce -0.0% | 5,380,821 | $1.1B |
| Boston Partners | 0.82% | Add +2.5% | 4,012,232 | $786.7M |
| JPMorgan Chase & Co. | 0.05% | Reduce -7.2% | 3,846,456 | $758.4M |
| Geode Capital Management, LLC | 0.04% | Add +1.9% | 3,086,308 | $602.7M |
| Morgan Stanley | 0.03% | Reduce -7.9% | 2,479,720 | $486.0M |
| EdgePoint Investment Group Inc. | 3.52% | Add +35.1% | 2,243,869 | $439.8M |
| Dimensional Fund Advisors LP | 0.08% | Add +0.9% | 1,949,535 | $382.1M |
| GMO | 0.94% | Add +3.7% | 1,883,024 | $369.0M |
| Victory Capital Management Inc. | 0.23% | Reduce -13.2% | 1,846,336 | $361.8M |
| Wells Fargo & Company | 0.07% | Reduce -0.4% | 1,762,769 | $345.5M |
| Bank of America Corp. | 0.03% | Add +8.0% | 1,752,902 | $343.5M |
| Invesco Ltd. | 0.03% | Reduce -1.7% | 1,638,487 | $321.1M |
| Davis Selected Advisers | 1.46% | Add +1.8% | 1,617,813 | $317.1M |
| Goldman Sachs Group Inc. | 0.03% | Reduce -21.1% | 1,348,694 | $264.3M |
| Northern Trust Corp. | 0.03% | Add +3.3% | 1,114,219 | $218.4M |
| FMR LLC | 0.01% | Reduce -21.6% | 942,218 | $184.7M |
| American Century Companies Inc. | 0.09% | Reduce -0.4% | 867,331 | $170.0M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.03% | Reduce -0.0% | 846,603 | $165.9M |
| Ameriprise Financial Inc. | 0.04% | Reduce -0.7% | 807,477 | $158.3M |
| M&G PLC | 0.84% | Reduce -14.8% | 805,341 | $157.8M |
| DekaBank Deutsche Girozentrale | 0.25% | No change | 748,680 | $149.2M |
| Charles Schwab Investment Management Inc. | 0.02% | Add +1.3% | 760,790 | $149.1M |
| Legal & General Group Plc | 0.03% | Reduce -0.8% | 736,625 | $144.4M |
| Qube Research & Technologies Ltd | 0.20% | Add +0.2% | 734,714 | $144.0M |
| Fiduciary Management Inc. | 1.75% | Reduce -31.1% | 720,986 | $141.3M |
| UBS Group AG | 0.02% | Reduce -37.0% | 702,337 | $137.6M |
| Bank of New York Mellon Corp | 0.02% | Reduce -2.2% | 655,961 | $128.6M |
| Vanguard Fiduciary Trust Co. | 0.03% | — | 619,180 | $121.3M |
| Alliancebernstein L.P. | 0.04% | Add +7.7% | 681,158 | $118.2M |
| Woodline Partners LP | 0.44% | Add +73.9% | 593,744 | $116.4M |
| Barclays PLC | 0.04% | Add +69.7% | 565,470 | $110.8M |
| Deutsche Bank AG | 0.04% | Reduce -9.6% | 550,899 | $108.0M |
| Principal Financial Group Inc. | 0.06% | Reduce -1.0% | 526,033 | $103.1M |
| Crawford Investment Counsel Inc. | 1.63% | Reduce -2.0% | 486,433 | $95.3M |
| Nuveen, LLC | 0.02% | Add +39.3% | 465,425 | $91.2M |
| Raymond James Financial Inc. | 0.03% | Reduce -1.0% | 458,455 | $89.8M |
| Artemis Investment Management LLP | 0.93% | Reduce -2.9% | 447,274 | $87.7M |
| Pacer Advisors, Inc. | 0.24% | Reduce -4.9% | 425,895 | $83.5M |
| Envestnet Asset Management Inc. | 0.02% | Add +23.6% | 412,436 | $80.8M |
| Amundi | 0.02% | Reduce -12.0% | 408,330 | $80.0M |
| Citadel Advisors | 0.05% | Reduce -18.4% | 347,218 | $68.0M |
| Squarepoint Ops LLC | 0.15% | Reduce -38.9% | 345,788 | $67.8M |
| First Trust Advisors LP | 0.05% | Reduce -6.4% | 329,152 | $64.5M |
| Advisors Capital Management, LLC | 0.76% | Add +4.3% | 327,251 | $64.1M |
| Swiss National Bank | 0.04% | Add +6.5% | 326,500 | $64.0M |
| CANADA LIFE ASSURANCE Co | 0.11% | Reduce -4.3% | 305,691 | $60.1M |
| M.D. Sass, LLC | 4.45% | New | 299,459 | $58.7M |
| Schroder Investment Management Group | 0.05% | Add +14.6% | 295,035 | $58.2M |
| Citigroup Inc. | 0.04% | Reduce -7.3% | 287,123 | $56.3M |
| BNP Paribas Financial Markets | 0.04% | Add +18.5% | 270,281 | $53.0M |
| Sumitomo Mitsui Trust Group, Inc. | 0.03% | Reduce -4.5% | 264,754 | $51.9M |
| Rhumbline Advisers | 0.04% | Reduce -4.7% | 263,347 | $51.6M |
| Van Lanschot Kempen Investment Management N.V. | 0.44% | Add +46.3% | 256,298 | $50.2M |
| Mitsubishi UFJ Asset Management Co., Ltd. | 0.03% | Add +9.6% | 251,441 | $49.3M |
| Vanguard Global Advisers, LLC | 0.03% | — | 242,525 | $47.5M |
| Eurizon Capital SGR S.p.A. | 0.15% | Reduce -3.4% | 240,816 | $47.2M |
| Acadian Asset Management LLC | 0.07% | Add +25.4% | 239,432 | $46.9M |
| California Public Employees Retirement System | 0.03% | Reduce -32.1% | 237,792 | $46.6M |
| Clark Capital Management Group, Inc. | 0.28% | New | 235,422 | $46.1M |
| Quantinno Capital Management LP | 0.08% | Reduce -14.3% | 231,025 | $45.3M |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 0.05% | Add +2.5% | 230,934 | $45.3M |
| VANGUARD ASSET MANAGEMENT, Ltd | 0.04% | — | 226,730 | $44.4M |
| SG Americas Securities, LLC | 0.05% | Add +20.9% | 217,286 | $42.6M |
| Nomura Asset Management International Inc. | 0.07% | Reduce -13.8% | 212,180 | $41.6M |
| Bank of Montreal | 0.02% | Reduce -3.2% | 210,365 | $41.2M |
| Marshall Wace, LLP | 0.04% | Add +114.8% | 200,278 | $39.3M |
| Royal Bank of Canada | 0.01% | Reduce -13.2% | 198,534 | $38.9M |
| HSBC Holdings PLC | 0.02% | Reduce -14.1% | 195,144 | $38.2M |
| Voya Investment Management LLC | 0.04% | Add +83.2% | 186,175 | $36.5M |
| Conning Inc. | 1.20% | Add +1.5% | 175,906 | $34.5M |
| Healthcare of Ontario Pension Plan Trust Fund | 0.06% | Add +1.5% | 170,912 | $33.5M |
| ANTIPODES PARTNERS Ltd | 0.61% | Reduce -5.5% | 162,589 | $31.9M |
| California State Teachers Retirement System | 0.03% | Reduce -3.4% | 162,238 | $31.8M |
| Braun Stacey Associates Inc. | 1.02% | Add +1.9% | 156,832 | $30.7M |
| Cookson Peirce & Co. Inc. | 1.30% | Reduce -3.2% | 156,342 | $30.6M |
| Copeland Capital Management, LLC | 0.68% | Reduce -2.7% | 155,348 | $30.4M |
| Willis Investment Counsel | 1.62% | No change | 151,800 | $29.7M |
| Focus Partners Wealth | 0.03% | Reduce -2.0% | 150,856 | $29.6M |
| Credit Agricole S A | 0.10% | Reduce -2.5% | 148,560 | $29.1M |
| D. E. Shaw & Co. | 0.02% | Reduce -55.1% | 147,727 | $29.0M |
| Storebrand Asset Management As | 0.08% | Reduce -1.6% | 140,574 | $27.5M |
| SEB Asset Management AB | 0.12% | — | 139,951 | $27.4M |
| Achmea Investment Management B.V. | 0.71% | Reduce -0.6% | 137,119 | $26.9M |
| APG Asset Management N.V. | 0.08% | Reduce -22.2% | 153,939 | $26.2M |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 0.05% | Add +10.1% | 131,935 | $25.8M |
| Gotham Asset Management | 0.08% | Add +64.7% | 130,777 | $25.6M |
| Mackenzie Financial Corp. | 0.03% | Add +20.7% | 126,510 | $24.8M |
| &partners | 0.12% | Add +10.0% | 122,183 | $24.0M |
| Franklin Resources Inc. | 0.01% | Add +163.0% | 121,667 | $23.8M |
| Silvercrest Asset Management Group LLC | 0.16% | Add +2.2% | 114,758 | $22.5M |
| Robeco Institutional Asset Management B.V. | 0.03% | Add +2.6% | 112,412 | $22.0M |
| Stifel Financial Corp. | 0.02% | Reduce -0.9% | 112,033 | $22.0M |
| LPL Financial LLC | 0.01% | Add +32.8% | 110,753 | $21.7M |
| Aberdeen Group plc | 0.03% | Add +3.6% | 108,671 | $21.3M |
| Moran Wealth Management, LLC | 0.65% | Add +4.1% | 108,351 | $21.2M |
| Tocqueville Asset Management L.P. | 0.31% | Reduce -1.6% | 107,479 | $21.1M |
"% of holder's portfolio" is DGX's weight in each manager's 13F, not the share of Quest Diagnostics Inc. the manager owns.