Martin Marietta Materials Ownership | Who Owns Martin Marietta Materials?
Martin Marietta Materials Ownership Summary
Martin Marietta Materials is owned by 25.89% institutional investors, 0.74% insiders, and 73.36% retail investors. Vanguard group is the largest institutional shareholder, holding 12.23% of MLM shares. Vanguard US Total Market Shares ETF is the top mutual fund, with 3.17% of its assets in Martin Marietta Materials shares.
MLM Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | Martin Marietta Materials | 25.89% | 0.74% | 73.36% |
| Sector | Basic Materials Stocks | 32.98% | 12.17% | 54.85% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Vanguard group | 7.37M | 12.23% | $4.59B |
| Blackrock funding, inc. /de | 4.49M | 7.44% | $2.79B |
| Blackrock | 4.14M | 6.70% | $2.24B |
| Fmr | 2.88M | 4.75% | $1.81B |
| State street | 2.80M | 4.62% | $1.76B |
| Jpmorgan chase | 2.23M | 3.70% | $1.39B |
| Principal financial group | 2.17M | 3.60% | $1.35B |
| Aristotle capital management | 2.15M | 3.55% | $1.36B |
| Bank of america corp /de/ | 1.66M | 2.68% | $896.89M |
| Victory capital management | 1.61M | 2.66% | $1.02B |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Camrose capital investment partners llp | 95.62K | 13.99% | $60.27M |
| Steginsky capital | 119.64K | 12.55% | $74.49M |
| Nitorum capital | 79.53K | 8.81% | $50.13M |
| Pelham capital | 24.82K | 8.22% | $15.45M |
| Rdst capital | 111.58K | 6.62% | $70.32M |
| Mcdonald capital investors inc/ca | 151.64K | 5.79% | $94.42M |
| Drummond knight asset management pty | 32.00K | 5.58% | $19.93M |
| Hawk ridge capital management lp | 180.97K | 5.44% | $114.06M |
| Gardner russo & quinn | 726.61K | 4.88% | $452.43M |
| M.d. sass | 91.20K | 4.48% | $56.79M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Norges bank | 569.62K | 0.04% | 569.62K |
| Blackrock funding, inc. /de | 4.49M | 0.05% | 334.22K |
| Freestone grove partners lp | 124.96K | 0.59% | 110.24K |
| Arrowstreet capital, limited partnership | 138.03K | 0.05% | 109.28K |
| Northwestern mutual wealth management | 77.79K | 0.00% | 77.25K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Jpmorgan chase | 2.23M | 0.09% | -705.20K |
| Gqg partners | - | - | -196.19K |
| Egerton capital (uk) llp | - | - | -165.34K |
| Select equity group | 1.04M | 2.69% | -146.70K |
| Diamond hill capital management | 446.53K | 1.42% | -135.41K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Norges bank | 569.62K | 0.04% | 569.62K | $354.68M |
| Drummond knight asset management pty | 32.00K | 5.58% | 32.00K | $19.93M |
| Jennison associates | 29.93K | 0.01% | 29.93K | $18.64M |
| Marsico capital management | 19.53K | 0.34% | 19.53K | $12.16M |
| Rakuten investment management | 18.02K | 0.01% | 18.02K | $3.23M |
Sold Out
| Holder | Change |
|---|---|
| Davis capital management | -1.00 |
| Hm payson | -1.00 |
| Loring wolcott & coolidge fiduciary advisors llp/ma | -1.00 |
| Valued wealth advisors | -1.00 |
| Baldwin brothers llc/ma | -1.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| 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% |
| Dec 31, 2024 | 909 | -5.31% | 51,521,659 | -13.45% | 84 | 0.89% | 459 | 2.68% | 297 | -6.01% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Vanguard US Total Market Shares ETF | 1.93M | 3.17% | -20.89K |
| Vanguard Total Stock Mkt Idx Inv | 1.90M | 3.14% | 4.17K |
| Vanguard Institutional 500 Index Trust | 1.74M | 2.88% | 12.14K |
| Principal Aligned MidCap Equity | 1.58M | 2.61% | -41.41K |
| Principal MidCap R5 | 1.58M | 2.61% | 658.64K |
| Vanguard 500 Index Investor | 1.54M | 2.55% | 9.47K |
| Vanguard Mid Cap Index Institutional | 1.31M | 2.17% | -6.86K |
| Fidelity Magellan | 866.70K | 1.44% | -5.50K |
| iShares Core S&P 500 ETF | 768.20K | 1.27% | 125.85K |
| Fidelity 500 Index | 762.66K | 1.26% | 1.05K |
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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