Martin Marietta Materials – Investors and Politicians Who Own It
MLM
Investors who own it
8 tracked investors, $1.8B in shares, each from their latest 13F.
| Investor | Value | Share of portfolio |
|---|---|---|
Chris HohnTCI Fund Management, Q2 2026 | $758.4M | 1.44% |
Tom RussoGardner Russo & Quinn, Q2 2026 | $406.8M | 4.56% |
Takis SparaggisAlkeon Capital Management, Q2 2026 | $361.8M | 0.49% |
Dan SundheimD1 Capital Partners, Q2 2026 | $199M | 0.57% |
| $54.9M | 0.04% | |
Wally WeitzWeitz Investment Management, Q2 2026 | $27.3M | 1.89% |
Jeremy GranthamGMO (Grantham Mayo Van Otterloo), Q2 2026 | $5.5M | 0.01% |
Barry RitholtzRitholtz Wealth Management, Q2 2026 | $675.4K | 0.01% |
Politicians who own it
Estimated from annual disclosures and trades; values are rough estimates.
| Politician | Est. value | Share of portfolio |
|---|---|---|
Robert P. Bresnahan, Jr.R-PA · House | $6.2K | 0.04% |
John J. McGuire IIIR-VA · House | $6.2K | 0.75% |
Investors buying and selling
| Investor | Action | Shares now |
|---|---|---|
| John Armitage | Added +101% | 165,338 |
| Takis Sparaggis | Reduced −0.1% | 770,351 |
| Tom Russo | Added +1.0% | 714,252 |
| National Pension Service (Korea) | Added +19% | 83,298 |
| Jeremy Grantham | Sold out | 0 |
| Wally Weitz | Added +1.5% | 41,275 |
| Barry Ritholtz | Added +28% | 1,112 |
Politicians trading it
Latest Congress trades disclosed under the STOCK Act; amounts are ranges.
| Politician | Action | Traded |
|---|---|---|
April McClain DelaneyChildD-MD · House | Sold$250K–$500K | Aug 25, 2026disclosed Sep 9, 2026 |
April McClain DelaneyChildD-MD · House | Bought$1K–$15K | Aug 19, 2026disclosed Sep 9, 2026 |
April McClain DelaneyChildD-MD · House | Bought$15K–$50K | Jul 24, 2026disclosed Aug 3, 2026 |
April McClain DelaneyChildD-MD · House | Bought$1K–$15K | Jul 20, 2026disclosed Aug 3, 2026 |
April McClain DelaneyChildD-MD · House | Bought$1K–$15K | Jul 17, 2026disclosed Aug 3, 2026 |
April McClain DelaneyChildD-MD · House | Bought$1K–$15K | May 28, 2026disclosed Jun 5, 2026 |
Josh GottheimerJointD-NJ · House | Sold$15K–$50K | Apr 9, 2026disclosed May 19, 2026 |
April McClain DelaneyChildD-MD · House | Bought$1K–$15K | Mar 9, 2026disclosed Apr 6, 2026 |
April McClain DelaneyChildD-MD · House | Bought$1K–$15K | Dec 2, 2025disclosed Jan 5, 2026 |
Val T. HoyleSpouseD-OR · House | Sold$1K–$15K | Sep 23, 2025disclosed Oct 10, 2025 |
April McClain DelaneyChildD-MD · House | Sold part$1K–$15K | Aug 1, 2025disclosed Sep 2, 2025 |
Lisa C. McClainSpouseR-MI · House | Sold$1K–$15K | Jun 10, 2025disclosed Aug 13, 2025 |
Lisa C. McClainSpouseR-MI · House | Bought$1K–$15K | Dec 11, 2024disclosed Aug 13, 2025 |
Val T. HoyleSpouseD-OR · House | Bought$1K–$15K | Oct 29, 2024disclosed Sep 12, 2025 |
Thomas R. SuozziD-NY · House | Sold$50K–$100K | Nov 7, 2018disclosed Sep 23, 2021 |
Thomas R. SuozziD-NY · House | Bought$50K–$100K | Oct 15, 2018disclosed Sep 23, 2021 |
Thomas R. SuozziD-NY · House | Bought$15K–$50K | Oct 2, 2018disclosed Dec 19, 2022 |
Thomas R. SuozziD-NY · House | Bought$15K–$50K | Oct 1, 2018disclosed Dec 19, 2022 |