Martin Marietta Materials
MLM · US
Martin Marietta Materials is held by 4 of the 24 tracked investors in their latest 13F filings. The largest position is Baillie Gifford's at $572M, 0.52% of that portfolio. Versus the prior quarter, 1 added, 3 trimmed and 0 bought new.
Big investors holding this stock
Latest 13F of the 24 tracked investors. Common shares only.
| Investor | Value ($) | vs prior quarter |
|---|---|---|
| Baillie Gifford weight 0.52% · Q2 2026 |
572M | ▼ 9% |
| Norges Bank weight 0.03% · Q2 2026 |
321M | ▼ 2% |
| National Pension Service (Korea) weight 0.04% · Q2 2026 |
54.9M | ▲ 6% |
| Korea Investment Corporation weight 0.03% · Q2 2026 |
15.1M | ▼ 8% |
Questions
Which big investors own Martin Marietta Materials?
Baillie Gifford ($572M), Norges Bank ($321M), National Pension Service (Korea) ($54.9M), Korea Investment Corporation ($15.1M), per their latest 13F filings.
Does Warren Buffett own Martin Marietta Materials?
Berkshire Hathaway did not report it in its latest 13F.
Does Korea's National Pension Service own Martin Marietta Materials?
Yes, $54.9M as of 2026-06-30 (0.04% of its US holdings).
Restated and computed from SEC (13F, 13D/G, Form 4) and DART filings and NPS public data. Filings describe a past date and may differ from current holdings (13F: quarter end, up to 45 days later). Not investment advice.
Sources: SEC EDGAR, DART, data.go.kr (NPS), OpenFIGI. See Methodology for how figures are computed.