Martin Marietta Materials Inc (MLM)
Basic Materials
Building Materials
525.10 $
-2.8%
vs. previous close
Closing price · As of: 31. Jul 2026
Who owns Martin Marietta Materials Inc (MLM)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 99.3% of the shares are freely tradable; institutional investors hold 101.4%.
Ownership Structure
Institutional ownership
Share of the stock held by institutional investors (funds, banks, insurers) according to regulatory filings.
101.4%
Insiders
Share of the stock held by the executives, founders and major shareholders of the company itself.
0.8%
Float
Share of stock freely tradable on the market — not locked up in the hands of founders, insiders, or major shareholders.
99.3%
Short % of float
Shares sold short as a percentage of the freely tradable float — high values signal many bets on falling prices.
4.7%
Shares Outstanding
Total number of shares issued. Price times share count gives market cap.
60Mio.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 7.80 | 4,685,757 | +4.4 | 03/31/2026 |
| Vanguard Capital Management, LLC | 6.52 | 3,917,383 | +0.0 | 03/31/2026 |
| Vanguard Portfolio Management, LLC | 5.26 | 3,160,444 | +0.0 | 03/31/2026 |
| State Street Corp | 4.79 | 2,877,568 | +3.8 | 03/31/2026 |
| FMR Inc | 4.34 | 2,607,979 | -10.7 | 03/31/2026 |
| Bank of America Corp | 4.00 | 2,399,779 | +0.9 | 03/31/2026 |
| Principal Financial Group Inc | 3.49 | 2,093,942 | -3.5 | 03/31/2026 |
| Aristotle Capital Management LLC | 3.25 | 1,955,100 | -4.6 | 03/31/2026 |
| JPMorgan Chase & Co | 3.10 | 1,860,226 | -16.6 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard Morn Total Stk Mkt Idx Investor | 3.19 | 1,913,144 | -0.3 | 06/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Data as of: July 31, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.