Martin Marietta Materials, Inc. (MLM) — Ownership
Institutional and insider ownership of Martin Marietta Materials, Inc., top holders, and 13F filings.
Institutional ownership
| Year | Holders | % institutional |
|---|---|---|
| 2026 Q1 | 1,085 | 96.76% |
Institutional and insider ownership of Martin Marietta Materials, Inc., top holders, and 13F filings.
Institutional ownership
| Year | Holders | % institutional |
|---|---|---|
| 2026 Q1 | 1,085 | 96.76% |