Quest DiagnosticsDGX
13F holders, Q2 2026 (June 30)1,111holders +42
109new positions
67sold out
8famous investors
$211.65avg. 13F price*
At the end of Q2 2026, 1,111 institutions reported holding Quest Diagnostics Inc. (DGX) in their 13F filings, up 42 from Q1 2026. 109 opened new positions and 67 sold out. The largest holders were BlackRock, Inc. ($2.0B), Vanguard Capital Management LLC ($1.5B) and Vanguard Portfolio Management LLC ($1.3B). 8 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 Q1 2026 → Q2 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 109 | $189.3M |
| Exits | 67 | $51.1M |
All 13F filers, Q1 2026 → Q2 2026: 6,246,885 shares bought and 5,302,792 shares sold, net +944,093 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 1,111 holders
| BlackRock, Inc. | 0.03% | Add +1.1% | 9,275,411 | $2.0B |
| Vanguard Capital Management LLC | 0.03% | Add +1.2% | 7,233,394 | $1.5B |
| Vanguard Portfolio Management LLC | 0.06% | Add +0.8% | 6,131,045 | $1.3B |
| State Street Corp. | 0.03% | Add +2.5% | 5,516,643 | $1.2B |
| T. Rowe Price Associates Inc. | 0.12% | Reduce -13.5% | 5,444,986 | $1.2B |
| Boston Partners | 0.89% | Add +18.3% | 4,744,473 | $1.0B |
| JPMorgan Chase & Co. | 0.04% | Reduce -8.5% | 3,520,438 | $748.6M |
| Geode Capital Management, LLC | 0.04% | Add +1.7% | 3,137,873 | $662.6M |
| Morgan Stanley | 0.03% | Reduce -0.8% | 2,460,497 | $521.5M |
| EdgePoint Investment Group Inc. | 3.60% | Add +0.2% | 2,247,568 | $476.4M |
| Dimensional Fund Advisors LP | 0.08% | Add +2.0% | 1,988,048 | $421.4M |
| Bank of America Corp. | 0.03% | Add +10.4% | 1,935,133 | $410.2M |
| GMO | 0.90% | Add +0.3% | 1,888,207 | $400.2M |
| Wells Fargo & Company | 0.06% | Reduce -0.7% | 1,751,220 | $371.2M |
| Davis Selected Advisers | 1.42% | Reduce -3.8% | 1,555,612 | $329.8M |
| Victory Capital Management Inc. | 0.19% | Reduce -16.0% | 1,550,556 | $328.6M |
| Norges Bank | 0.03% | — | 1,406,620 | $298.1M |
| FMR LLC | 0.01% | Add +48.5% | 1,398,735 | $296.5M |
| Invesco Ltd. | 0.02% | Reduce -15.8% | 1,379,115 | $292.3M |
| Northern Trust Corp. | 0.03% | Add +1.2% | 1,127,454 | $239.0M |
| Goldman Sachs Group Inc. | 0.02% | Reduce -27.1% | 982,694 | $208.3M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.04% | Add +11.3% | 942,407 | $199.7M |
| UBS Group AG | 0.03% | Add +26.6% | 888,906 | $188.4M |
| American Century Companies Inc. | 0.08% | Reduce -5.7% | 818,220 | $173.4M |
| M&G PLC | 0.87% | Reduce -1.2% | 795,650 | $168.7M |
| Charles Schwab Investment Management Inc. | 0.02% | Add +1.7% | 773,711 | $164.0M |
| Ameriprise Financial Inc. | 0.03% | Reduce -5.9% | 759,975 | $161.1M |
| Legal & General Group Plc | 0.03% | Reduce -2.6% | 717,085 | $152.0M |
| DekaBank Deutsche Girozentrale | 0.25% | No change | 748,680 | $146.2M |
| Bank of New York Mellon Corp | 0.02% | Reduce -4.1% | 629,339 | $133.4M |
| Vanguard Fiduciary Trust Co. | 0.03% | Add +0.4% | 621,639 | $131.8M |
| Deutsche Bank AG | 0.04% | Add +6.3% | 585,895 | $124.2M |
| Alliancebernstein L.P. | 0.04% | Reduce -8.1% | 625,894 | $122.7M |
| Nuveen, LLC | 0.03% | Add +21.1% | 563,830 | $119.5M |
| Principal Financial Group Inc. | 0.05% | Reduce -1.7% | 517,225 | $109.6M |
| Raymond James Financial Inc. | 0.03% | Add +10.3% | 505,762 | $107.2M |
| Amundi | 0.03% | Add +22.1% | 498,751 | $105.7M |
| Woodline Partners LP | 0.32% | Reduce -18.2% | 485,841 | $103.0M |
| Fiduciary Management Inc. | 1.46% | Reduce -32.9% | 483,557 | $102.5M |
| Artemis Investment Management LLP | 0.88% | Add +4.6% | 467,921 | $99.2M |
| Crawford Investment Counsel Inc. | 1.63% | Reduce -5.4% | 460,081 | $97.5M |
| Barclays PLC | 0.03% | Reduce -20.6% | 448,726 | $95.1M |
| Envestnet Asset Management Inc. | 0.02% | Add +3.9% | 428,564 | $90.8M |
| Schroder Investment Management Group | 0.06% | Add +41.6% | 417,715 | $88.8M |
| BNP Paribas Financial Markets | 0.04% | Add +46.2% | 395,245 | $83.8M |
| Pacer Advisors, Inc. | 0.21% | Reduce -10.3% | 381,995 | $81.0M |
| M.D. Sass, LLC | 5.06% | Add +20.4% | 360,453 | $76.4M |
| Acadian Asset Management LLC | 0.09% | Add +44.7% | 346,489 | $73.4M |
| Qube Research & Technologies Ltd | 0.08% | Reduce -53.3% | 343,398 | $72.8M |
| Mackenzie Financial Corp. | 0.07% | Add +163.4% | 333,295 | $70.6M |
| Advisors Capital Management, LLC | 0.75% | Add +0.1% | 327,575 | $69.4M |
| Citigroup Inc. | 0.03% | Add +9.9% | 315,584 | $66.9M |
| Swiss National Bank | 0.03% | Reduce -5.1% | 309,900 | $65.7M |
| First Trust Advisors LP | 0.04% | Reduce -11.6% | 290,970 | $61.7M |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 0.06% | Add +21.4% | 280,319 | $59.4M |
| Balyasny Asset Management L.P. | 0.11% | Add +9402.1% | 275,371 | $58.4M |
| Marshall Wace, LLP | 0.05% | Add +34.7% | 269,760 | $57.2M |
| CANADA LIFE ASSURANCE Co | 0.09% | Reduce -11.8% | 269,711 | $57.0M |
| Mitsubishi UFJ Asset Management Co., Ltd. | 0.03% | Add +6.7% | 268,354 | $56.9M |
| Rhumbline Advisers | 0.04% | Add +1.7% | 267,727 | $56.7M |
| Sumitomo Mitsui Trust Group, Inc. | 0.03% | Reduce -2.3% | 258,597 | $54.8M |
| VANGUARD ASSET MANAGEMENT, Ltd | 0.04% | Add +11.7% | 253,146 | $53.7M |
| Quantinno Capital Management LP | 0.06% | Add +9.5% | 252,924 | $53.6M |
| FIL Ltd | 0.04% | Add +191.1% | 251,976 | $53.4M |
| Bank of Montreal | 0.02% | Add +15.8% | 243,647 | $51.6M |
| Van Lanschot Kempen Investment Management N.V. | 0.39% | Reduce -5.2% | 242,907 | $51.5M |
| Clark Capital Management Group, Inc. | 0.28% | Add +2.7% | 241,846 | $51.3M |
| Vanguard Global Advisers, LLC | 0.02% | Reduce -0.7% | 240,742 | $51.0M |
| Nomura Asset Management International Inc. | 0.07% | Add +9.7% | 232,797 | $49.3M |
| HSBC Holdings PLC | 0.02% | Add +15.3% | 224,986 | $47.8M |
| Eurizon Capital SGR S.p.A. | 0.13% | Reduce -7.6% | 222,564 | $47.2M |
| Royal Bank of Canada | 0.01% | Add +10.6% | 219,613 | $46.5M |
| Voya Investment Management LLC | 0.04% | Add +13.6% | 211,496 | $44.8M |
| PFA Pension, Forsikringsaktieselskab | 0.11% | New | 205,613 | $43.6M |
| Integral Health Asset Management, LLC | 1.74% | Add +233.3% | 200,000 | $42.4M |
| California Public Employees Retirement System | 0.02% | Reduce -17.5% | 196,151 | $41.6M |
| Eastern Bank | 0.62% | Add +143.6% | 189,969 | $40.3M |
| Conning Inc. | 1.23% | Add +6.2% | 186,734 | $39.6M |
| SEB Asset Management AB | 0.15% | Add +30.7% | 182,906 | $38.8M |
| California State Teachers Retirement System | 0.03% | Add +7.7% | 174,776 | $37.0M |
| Focus Partners Wealth | 0.04% | Add +8.3% | 163,327 | $34.6M |
| SG Americas Securities, LLC | 0.02% | Reduce -25.1% | 162,837 | $34.5M |
| Storebrand Asset Management As | 0.08% | Add +14.5% | 160,970 | $34.1M |
| Cookson Peirce & Co. Inc. | 1.09% | Reduce -0.5% | 155,589 | $33.0M |
| Credit Agricole S A | 0.08% | Add +4.6% | 155,438 | $32.9M |
| Braun Stacey Associates Inc. | 0.93% | Reduce -1.6% | 154,396 | $32.7M |
| Willis Investment Counsel | 1.53% | Reduce -0.2% | 151,500 | $32.1M |
| Copeland Capital Management, LLC | 0.63% | Reduce -6.8% | 144,784 | $30.7M |
| LPL Financial LLC | 0.01% | Add +29.2% | 143,079 | $30.3M |
| Citadel Advisors | 0.02% | Reduce -61.6% | 133,211 | $28.2M |
| APG Asset Management N.V. | 0.07% | Reduce -2.3% | 150,334 | $27.9M |
| Silvercrest Asset Management Group LLC | 0.18% | Add +10.6% | 126,888 | $26.9M |
| Achmea Investment Management B.V. | 0.66% | Reduce -9.0% | 124,786 | $26.4M |
| &partners | 0.11% | Add +1.8% | 124,363 | $26.4M |
| Stifel Financial Corp. | 0.02% | Add +10.0% | 123,220 | $26.1M |
| Franklin Resources Inc. | 0.01% | Reduce -0.6% | 120,973 | $25.6M |
| Candriam S.C.A. | 0.12% | Add +15.5% | 120,238 | $25.5M |
| Squarepoint Ops LLC | 0.05% | Reduce -65.9% | 117,831 | $25.0M |
| Gotham Asset Management | 0.06% | Reduce -10.1% | 117,533 | $24.9M |
| National Bank of Canada | 0.02% | Add +139.0% | 117,005 | $24.8M |
"% of holder's portfolio" is DGX's weight in each manager's 13F, not the share of Quest Diagnostics Inc. the manager owns.