Martin Marietta Materials Inc
MLM- Exchange
- NYSE
- Industry
- Mining & Quarrying of Nonmetallic Minerals (No Fuels)
- SEC CIK
- 0000916076
No open-market purchases or sales by Martin Marietta Materials Inc insiders were filed in the last 90 days; 1,082 institutions reported holding it in 13F filings for Q2 2026, worth $34.2B in total; 4 superinvestors hold it, including TCI Fund Management and Gardner Russo & Quinn.
Key figures
- Market capClose on Nov 9, 2026
- $37.8B
- Insider buysOpen market, last 90 days
- 0
- Insider sellsOpen market, last 90 days
- 0
- 13F holdersQ2 2026, +12 vs. previous quarter
- 1,082
- 13F valueReported value at the end of Q2 2026
- $34.2B
- Superinvestors holdingAt the end of Q2 2026
- 4
Price chart
Financials
See financial statementsFrom SEC filings, in USD.
- Revenue, FY2025
- $6.15B
- −5.9% year over year
- Net income, FY2025
- $1.14B
- −43.0% year over year
- Free cash flow, FY2025
- $978.0M
- +61.9% year over year
- Revenue, Q3 FY2026
- $2.37B
- +28.3% year over year
Revenue flow, FY2025
Green is profit; orange is costs, expenses and taxes. Percentages are shares of revenue.
Short interest
See short dataFrom FINRA, settlement date Oct 15, 2026.
- Short interest
- 3.21M
- Shares sold short
- Change
- +22.4K
- +0.7% vs. previous
- Days to cover
- 4.56
- At average daily volume
Superinvestors holding MLM, Q2 2026
Go to the superinvestors tab4 superinvestors report holding Martin Marietta Materials Inc on Form 13F. Percentages are the stock's share of each portfolio.
TCI Fund Management
Chris Hohn
1.4%
Martin Marietta Materials Inc's share of the portfolio
- Shares
- 1,315,109
- Value
- $758.4M
Gardner Russo & Quinn
Tom Russo
4.6%
Martin Marietta Materials Inc's share of the portfolio
- Shares
- 705,367
- Value
- $406.8M
| Superinvestor | Weight | Value |
|---|---|---|
| D1 Capital Partners | 0.6% | $199.0M |
| Weitz Investment Management | 1.9% | $27.3M |
Latest insider trades
See all insider tradesOpen-market purchases and sales by Martin Marietta Materials Inc insiders from Form 4, newest first.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Aug 11, 2025 (view filing) | Aug 8 | 3 days | Perez Laree EDirector | SSale | −1.04K | $613.32 | −$636.6K | −6.3%15.4K after | |
| Mar 6, 2025 (view filing) | Mar 5 | 1 day | McCunniff Donald A.EVP and CHRO | SSale | −1.33K | $475.00 | −$632.7K | −27.4%3.52K after | |
| Mar 5, 2025 (view filing) | Mar 4 | 1 day | Petro Michael JSVP - Strategy and Development | PPurchase | +550 | $454.37 | +$249.9K | +6.5%8.98K after | |
| Mar 15, 2024 (view filing) | Mar 14 | 1 day | Bar Roselyn REVP, General Counsel and Secy | SSale | −10.0K | $603.29 | −$6.03M | −14.3%60.0K after | |
| Mar 6, 2024 (view filing) | Mar 5 | 1 day | Nye C HowardChairman, Pres & CEO | SSale | −15.0K | $604.26 | −$9.06M | −10.0%134.6K after | |
| Mar 6, 2024 (view filing) | Mar 5 | 1 day | Nye C HowardChairman, Pres & CEO | SSale | −5.00K | $604.26 | −$3.02M | −6.6%70.4K after | |
| Feb 20, 2024 (view filing) | Feb 16 | 4 days | Cole Sue WDirector | SSale | −1.72K | $543.48 | −$937.0K | −8.0%19.8K after | 2 lots |
| Aug 22, 2023 (view filing) | Aug 21 | 1 day | LaTorre Craig MSr. VP, CHRO | SSale | −1.93K | $431.68 | −$834.9K | −16.6%9.73K after | |
| Aug 1, 2023 (view filing) | Jul 28 | 4 days | LaTorre Craig MSr. VP, CHRO | SSale | −500 | $447.09 | −$223.5K | −4.1%11.7K after | |
| Nov 18, 2022 (view filing) | Nov 18 | Same day | Cole Sue WDirector | SSale | −1.69K | $355.61 | −$599.2K | −7.4%21.2K after |
Top 10 13F holders, Q2 2026
See all 1,082 holdersThe largest institutional positions in Martin Marietta Materials Inc at the end of Q2 2026; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock, Inc. | 4,692,446 | $2.71B | 0.04% | +6,689+0.1% | Added |
| Vanguard Capital Management LLC | 3,929,705 | $2.27B | 0.05% | +12,322+0.3% | Added |
| Vanguard Portfolio Management LLC | 3,197,395 | $1.84B | 0.08% | +36,951+1.2% | Added |
| State Street Corp | 3,159,639 | $1.82B | 0.05% | +282,071+9.8% | Added |
| Bank of America Corp | 2,446,762 | $1.41B | 0.09% | +46,983+2.0% | Added |
| FMR LLC | 2,192,603 | $1.26B | 0.05% | −415,376−15.9% | Reduced |
| Principal Financial Group Inc | 2,116,369 | $1.22B | 0.60% | +22,427+1.1% | Added |
| Aristotle Capital Management, LLC | 1,831,597 | $1.06B | 2.22% | −123,503−6.3% | Reduced |
| Victory Capital Management Inc | 1,783,432 | $1.03B | 0.58% | +146,285+8.9% | Added |
| Price T Rowe Associates Inc | 1,599,324 | $922.3M | 0.09% | +110,484+7.4% | Added |
Holders of 5% or more of MLM
See all 3 holders and filingsHolders whose latest Schedule 13D or 13G filing reports 5% or more of Martin Marietta Materials Inc.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| LNA Holding SRL | 13D | 15.40%11.0M shares | New | Aug 24, 20261 filing | Aug 24, 2026 | SEC |
| Vanguard Capital Management LLC | 13G/A | 6.41%4.56M shares | −1.06 ppfrom 7.47% | Apr 30, 20262 filings | Oct 30, 2026 | SEC |
| State Street Corp | 13G | 5.20%3.16M shares | – | Feb 10, 20213 filings | Aug 7, 2026 | SEC |
Politician trades
All politician trades in MLM6 members of Congress reported 19 trades in Martin Marietta Materials Inc since 2020. Newest filings:
| Filed | Politician | Type | Amount |
|---|---|---|---|
| Sep 9, 2026 |  April McClain Delaney House · MD | Sell | $250K-$500K |
| Sep 9, 2026 | April McClain Delaney House · MD | Buy | $1K-$15K |
| Aug 3, 2026 | April McClain Delaney House · MD | Buy | $15K-$50K |
| Aug 3, 2026 | April McClain Delaney House · MD | Buy | $1K-$15K |
| Aug 3, 2026 | April McClain Delaney House · MD | Buy | $1K-$15K |
House · MD · Sep 9, 2026
Sell$250K-$500K
House · MD · Sep 9, 2026
Buy$1K-$15K
House · MD · Aug 3, 2026
Buy$15K-$50K
House · MD · Aug 3, 2026
Buy$1K-$15K
House · MD · Aug 3, 2026
Buy$1K-$15K