Martin Marietta Materials Ownership | Who Owns Martin Marietta Materials?
Martin Marietta Materials Ownership Summary
Martin Marietta Materials is owned by 96.59% institutional investors, 0.80% insiders, and 2.60% retail investors. Vanguard group is the largest institutional shareholder, holding 12.23% of MLM shares. Vanguard Total Stock Mkt Idx Inv is the top mutual fund, with 3.20% of its assets in Martin Marietta Materials shares.
MLM Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | Martin Marietta Materials | 96.59% | 0.80% | 2.60% |
| Sector | Basic Materials Stocks | 41.27% | 13.22% | 45.51% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Vanguard group | 7.37M | 12.23% | $4.59B |
| Blackrock funding, inc. /de | 4.69M | 7.77% | $2.76B |
| Blackrock | 4.14M | 6.70% | $2.24B |
| State street | 2.88M | 4.77% | $1.69B |
| Fmr | 2.61M | 4.33% | $1.54B |
| Principal financial group | 2.09M | 3.47% | $1.23B |
| Aristotle capital management | 1.96M | 3.24% | $1.15B |
| Jpmorgan chase | 1.86M | 3.08% | $1.07B |
| Victory capital management | 1.64M | 2.71% | $963.76M |
| Bank of america corp /de/ | 1.66M | 2.68% | $896.89M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Steginsky capital | 128.35K | 12.49% | $75.56M |
| Camrose capital investment partners llp | 136.72K | 10.53% | $80.48M |
| Nitorum capital | 17.59K | 9.09% | $10.35M |
| Pelham capital | 18.48K | 8.53% | $10.88M |
| Quantum capital management, llc / nj | 90.39K | 6.81% | $53.21M |
| One madison group | 91.00K | 6.19% | $53.57M |
| Mcdonald capital investors inc/ca | 149.91K | 6.04% | $88.25M |
| Drummond knight asset management pty | 26.17K | 5.45% | $15.41M |
| Rdst capital | 95.09K | 5.39% | $55.98M |
| Gardner russo & quinn | 715.41K | 4.96% | $421.15M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Price t rowe associates inc /md/ | 1.49M | 0.10% | 1.19M |
| Norges bank | 569.62K | 0.04% | 569.62K |
| Vanguard fiduciary trust | 339.29K | 0.05% | 339.29K |
| D1 capital partners | 322.86K | 1.69% | 322.86K |
| Blackrock funding, inc. /de | 4.69M | 0.05% | 199.53K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Victory capital management | 1.64M | 0.62% | -811.78K |
| Jpmorgan chase | 1.86M | 0.07% | -369.36K |
| Eagle capital management | 470.00 | 0.00% | -320.28K |
| Fmr | 2.61M | 0.08% | -313.81K |
| Gqg partners | - | - | -196.19K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Norges bank | 569.62K | 0.04% | 569.62K | $354.68M |
| Vanguard fiduciary trust | 339.29K | 0.05% | 339.29K | $199.73M |
| D1 capital partners | 322.86K | 1.69% | 322.86K | $190.06M |
| Vanguard global advisers | 131.44K | 0.04% | 131.44K | $77.38M |
| Vanguard asset management | 96.36K | 0.05% | 96.36K | $56.73M |
Sold Out
| Holder | Change |
|---|---|
| Atlantic private wealth | -1.00 |
| Rakuten securities | -1.00 |
| Loring wolcott & coolidge fiduciary advisors llp/ma | -1.00 |
| Baldwin brothers llc/ma | -1.00 |
| Innealta capital | -1.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Mar 31, 2026 | 1,074 | -4.62% | 58,246,463 | -2.12% | 96 | 0.99% | 472 | -7.45% | 365 | 2.82% |
| Dec 31, 2025 | 501 | -52.78% | 15,612,935 | -73.18% | 25 | 0.28% | 214 | -56.85% | 166 | -51.60% |
| Sep 30, 2025 | 589 | -41.74% | 21,293,061 | -64.29% | 35 | 0.36% | 293 | -42.32% | 162 | -49.06% |
| Jun 30, 2025 | 996 | 3.43% | 59,602,150 | 1.08% | 98 | 1.05% | 503 | 7.25% | 311 | -1.58% |
| Mar 31, 2025 | 950 | -4.62% | 58,904,747 | -0.27% | 96 | 1.05% | 463 | -7.58% | 313 | -3.99% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Vanguard Total Stock Mkt Idx Inv | 1.92M | 3.20% | 5.88K |
| Vanguard US Total Market Shares ETF | 1.93M | 3.17% | -20.89K |
| Vanguard Institutional 500 Index Trust | 1.74M | 2.88% | 12.14K |
| Vanguard 500 Index Investor | 1.56M | 2.60% | 27.89K |
| Principal MidCap R5 | 1.54M | 2.56% | 25.59K |
| Principal Aligned MidCap Equity | 1.51M | 2.51% | -62.88K |
| Vanguard Mid Cap Index Institutional | 1.31M | 2.17% | 2.83K |
| Fidelity Magellan | 790.40K | 1.32% | -22.10K |
| iShares Core S&P 500 ETF | 780.03K | 1.30% | 2.27K |
| Fidelity 500 Index | 770.17K | 1.28% | 2.68K |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Aug 08, 2025 | PEREZ LAREE E | - | Sell | $636.63K |
| Mar 05, 2025 | McCunniff Donald A. | EVP and CHRO | Sell | $632.70K |
| Mar 04, 2025 | Petro Michael J | SVP - Strategy and Development | Buy | $249.90K |
| Mar 14, 2024 | BAR ROSELYN R | EVP, General Counsel and Secy | Sell | $6.03M |
| Mar 05, 2024 | Nye C Howard | Chairman, Pres & CEO | Sell | $3.02M |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2026 Q1 | - | - |
| 2025 Q4 | - | - |
| 2025 Q3 | - | 1 |
| 2025 Q2 | - | - |
| 2025 Q1 | 1 | 1 |
MLM Ownership FAQ
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