Quest Diagnostics Inc. – Investors and Politicians Who Own It
DGX
Investors who own it
4 tracked investors, $740.5M in shares, each from their latest 13F.
| Investor | Value | Share of portfolio |
|---|---|---|
Jeremy GranthamGMO (Grantham Mayo Van Otterloo), Q2 2026 | $400.2M | 0.90% |
Chris DavisDavis Selected Advisers, Q2 2026 | $329.8M | 1.42% |
| $9.8M | 0.01% | |
Ray DalioBridgewater Associates, Q2 2026 | $796.1K | 0.00% |
Politicians who own it
Estimated from annual disclosures and trades; values are rough estimates.
| Politician | Est. value | Share of portfolio |
|---|---|---|
Thomas R. CarperD-DE · Senate | $39.4K | 2.24% |
Alan ArmstrongR-OK · Senate | $18.7K | 0.37% |
Gilbert Ray Cisneros, Jr.D-CA · House | $10.6K | 0.02% |
Robert P. Bresnahan, Jr.R-PA · House | $10.6K | 0.06% |
Investors buying and selling
| Investor | Action | Shares now |
|---|---|---|
| Rod Wong | Reduced −50% | 250,000 |
| Jeremy Grantham | Reduced −0.1% | 1,746,400 |
| Chris Davis | Added +0.5% | 1,361,612 |
| National Pension Service (Korea) | Added +3.4% | 234,891 |
| Lee Ainslie | New | 18,178 |
| Ray Dalio | Added +50% | 5,646 |
Politicians trading it
Latest Congress trades disclosed under the STOCK Act; amounts are ranges.
| Politician | Action | Traded |
|---|---|---|
Alan ArmstrongR-OK · Senate | Bought$1K–$15K | Mar 30, 2026disclosed Jul 21, 2026 |
Alan ArmstrongR-OK · Senate | Bought$1K–$15K | Mar 27, 2026disclosed Jul 21, 2026 |
Julie JohnsonJointD-TX · House | Sold$1K–$15K | Nov 3, 2025disclosed Dec 11, 2025 |
Julie JohnsonJointD-TX · House | Sold$1K–$15K | Oct 30, 2025disclosed Aug 5, 2026 |
Julie JohnsonJointD-TX · House | Bought$1K–$15K | Oct 30, 2025disclosed Aug 5, 2026 |
Julia LetlowR-LA · House | Sold$1K–$15K | Jul 24, 2025disclosed Jan 13, 2026 |
Julia LetlowR-LA · House | Bought$1K–$15K | Apr 28, 2025disclosed Jan 13, 2026 |
Carol D. MillerR-WV · House | Sold$1K–$15K | Mar 10, 2025disclosed Apr 11, 2025 |
Carol D. MillerSpouseR-WV · House | Sold$15K–$50K | Mar 10, 2025disclosed Aug 13, 2026 |
Gilbert Ray Cisneros, Jr.D-CA · House | Sold part$1K–$15K | Jan 24, 2025disclosed Feb 11, 2025 |
Earl BlumenauerSpouseD-OR · House | Sold$1K–$15K | Apr 4, 2024disclosed May 4, 2024 |
Tommy TubervilleJointR-AL · Senate | Sold part$15K–$50K | Jan 3, 2024disclosed Feb 14, 2024 |
Thomas R. CarperSpouseD-DE · Senate | Sold part$1K–$15K | Dec 11, 2023disclosed Jan 3, 2024 |
Carol D. MillerR-WV · House | Bought$1K–$15K | Nov 14, 2022disclosed Dec 13, 2022 |
Kathy E. ManningJointD-NC · House | Sold$1K–$15K | Aug 3, 2022disclosed Sep 14, 2022 |
Kathy E. ManningJointD-NC · House | Bought$1K–$15K | Jul 20, 2022disclosed Aug 10, 2022 |
Earl BlumenauerD-OR · House | Sold$1K–$15K | Mar 14, 2022disclosed Apr 1, 2022 |
Earl BlumenauerD-OR · House | Bought$1K–$15K | Feb 24, 2022disclosed Apr 1, 2022 |
Carol D. MillerSpouseR-WV · House | Bought$15K–$50K | Jul 28, 2021disclosed Sep 2, 2022 |
Sara JacobsD-CA · House | Sold$50K–$100K | Apr 9, 2021disclosed May 28, 2021 |
Tommy TubervilleJointR-AL · Senate | Bought$1K–$15K | Mar 29, 2021disclosed Jul 23, 2021 |
Thomas R. CarperSpouseD-DE · Senate | Bought$1K–$15K | Apr 2, 2020disclosed May 17, 2021 |
Thomas R. CarperSpouseD-DE · Senate | Bought$1K–$15K | Apr 2, 2020disclosed May 4, 2020 |
Earl BlumenauerD-OR · House | Bought$1K–$15K | Mar 2, 2020disclosed Apr 16, 2020 |
Gilbert Ray Cisneros, Jr.D-CA · House | Bought$1K–$15K | Mar 14, 2019disclosed Apr 16, 2019 |