Institutional shares held 57.6 Million
153K calls
120K puts
Total value of holdings $31.2B
$82.9M calls
$65M puts
Market Cap $33.8B
62,374,100 Shares Out.
Institutional ownership 92.39%
# of Institutions 1,048


Latest Institutional Activity in MLM

Top Purchases

Q1 2025
American Century Companies Inc Shares Held: 369K ($200M)
Q1 2025
Eagle Capital Management LLC Shares Held: 333K ($181M)
Q1 2025
Jpmorgan Chase & CO Shares Held: 2.94M ($1.59B)
Q1 2025
Cibc Private Wealth Group, LLC Shares Held: 691K ($374M)
Q1 2025
Diamond Hill Capital Management Inc Shares Held: 659K ($357M)

Top Sells

Q1 2025
Gamma Investing LLC Shares Held: 1.46K ($790K)
Q1 2025
Baillie Gifford & CO Shares Held: 1.26M ($680M)
Q1 2025
Price T Rowe Associates Inc Shares Held: 208K ($113M)
Q1 2025
T. Rowe Price Investment Management, Inc. Shares Held: 1.21M ($658M)
Q1 2025
Select Equity Group, L.P. Shares Held: 1.19M ($645M)

About MLM

Martin Marietta Materials, Inc., a natural resource-based building materials company, supplies aggregates and heavy-side building materials to the construction industry in the United States and internationally. It offers crushed stone, sand, and gravel products; ready mixed concrete and asphalt; paving products and services; and Portland and specialty cement for use in the infrastructure projects, and nonresidential and residential construction markets, as well as in the railroad, agricultural, utility, and environmental industries. The company also produces magnesia-based chemicals products that are used in industrial, agricultural, and environmental applications; and dolomitic lime primarily to customers for steel production and soil stabilization. Its chemical products are used in flame retardants, wastewater treatment, pulp and paper production, and other environmental applications. The company was founded in 1939 and is headquartered in Raleigh, North Carolina.


Insider Transactions at MLM

Insider Transaction List

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Date Insider Transaction Ownership Type Shares Traded Value / Price
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Last 12 Months Summary

Buy / Acquisition
63.8K Shares
From 19 Insiders
Grant, award, or other acquisition 61.9K shares
Open market or private purchase 550 shares
Exercise of conversion of derivative security 1.33K shares
Sell / Disposition
25.7K Shares
From 8 Insiders
Payment of exercise price or tax liability 24.2K shares
Bona fide gift 182 shares
Open market or private sale 1.33K shares

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