Martin Marietta Materials Inc

MLM

Exchange: NYSE
Industry: Mining & Quarrying of Nonmetallic Minerals (No Fuels)
SEC CIK: 0000916076

SEC filings (opens in a new tab)

No open-market purchases or sales by Martin Marietta Materials Inc insiders were filed in the last 90 days; 1,079 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.

13F holders, Q2 2026

Institutional positions in Martin Marietta Materials Inc as of Jun 30, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders: 1,079; +13 vs. Q1 2026
Shares held: 59.2M; +954.3K (+1.6%) vs. Q1 2026
Total value: $34.2B; −$107.1M (−0.3%) vs. Q1 2026
New holders: 110; 363 more added
Sold out: 97; 395 more reduced

11 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q1 2026: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting MLM on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ2 2026: 1,079 institutions

Value heldQ2 2026: $34.2B

Institutions holding MLM and their total value by quarter
Quarter	Holders	Value
Q2 2026	1,079	$34.2B
Q1 2026	1,077	$34.3B
Q4 2025	1,117	$37.1B
Q3 2025	1,053	$36.7B
Q2 2025	999	$32.8B
Q1 2025	953	$28.5B
Q4 2024	992	$30.5B
Q3 2024	948	$32.4B
Q2 2024	940	$32.3B
Q1 2024	957	$36.4B
Q4 2023	889	$29.3B
Q3 2023	815	$24.1B
Q2 2023	804	$27.0B
Q1 2023	746	$20.7B
Q4 2022	768	$19.7B
Q3 2022	736	$18.8B
Q2 2022	728	$17.5B
Q1 2022	763	$22.7B
Q4 2021	775	$25.6B
Q3 2021	700	$19.7B
Q2 2021	696	$20.3B
Q1 2021	692	$19.4B

Institutions, Q2 2026

Shares, value and share of portfolio for each institution holding Martin Marietta Materials Inc; share changes are against Q1 2026.

Institutions holding MLM in Q2 2026
Institution	Shares	Value	% of portfolio	Change in shares	Action
AXA S.A.	0	$0	0.00%	−2,118−100.0%	Sold out
Main Street Financial Solutions, LLC	0	$0	0.00%	−1,903−100.0%	Sold out
Hudson Bay Capital Management LP	0	$0	0.00%	−1,609−100.0%	Sold out
Curated Wealth Partners LLC	0	$0	0.00%	−1,500−100.0%	Sold out
AlTi Global, Inc.	0	$0	0.00%	−1,496−100.0%	Sold out
Empire Financial Management Company, LLC	0	$0	0.00%	−1,352−100.0%	Sold out
BBR Partners, LLC	0	$0	0.00%	−1,242−100.0%	Sold out
Chesapeake Capital Corp	0	$0	0.00%	−1,191−100.0%	Sold out
ISAM Funds (UK) Ltd	0	$0	0.00%	−1,120−100.0%	Sold out
Dynamic Technology Lab Private Ltd	0	$0	0.00%	−1,115−100.0%	Sold out
EP Wealth Advisors, LLC	0	$0	0.00%	−1,093−100.0%	Sold out
nVerses Capital, LLC	0	$0	0.00%	−916−100.0%	Sold out
MQS Management LLC	0	$0	0.00%	−869−100.0%	Sold out
Prosperity Consulting Group, LLC	0	$0	0.00%	−821−100.0%	Sold out
Greenland Capital Management LP	0	$0	0.00%	−820−100.0%	Sold out
Concentric Capital Strategies, LP	0	$0	0.00%	−788−100.0%	Sold out
Miracle Mile Advisors, LLC	0	$0	0.00%	−710−100.0%	Sold out
Sym Financial Corp	0	$0	0.00%	−675−100.0%	Sold out
Massar Capital Management, LP	0	$0	0.00%	−650−100.0%	Sold out
WPWealth LLP	0	$0	0.00%	−637−100.0%	Sold out
Gateway Wealth Partners, LLC	0	$0	0.00%	−623−100.0%	Sold out
Robertson Stephens Wealth Management, LLC	0	$0	0.00%	−599−100.0%	Sold out
Menard Financial Group LLC	0	$0	0.00%	−590−100.0%	Sold out
Mutual Advisors, LLC	0	$0	0.00%	−489−100.0%	Sold out
Insigneo Advisory Services, LLC	0	$0	0.00%	−481−100.0%	Sold out
Eagle Capital Management LLC	0	$0	0.00%	−470−100.0%	Sold out
Dynamic Advisor Solutions LLC	0	$0	0.00%	−439−100.0%	Sold out
National Asset Management, Inc.	0	$0	0.00%	−447−100.0%	Sold out
Kovack Advisors, Inc.	0	$0	0.00%	−414−100.0%	Sold out
Triad Wealth Partners, LLC	0	$0	0.00%	−398−100.0%	Sold out
Patton Fund Management, Inc.	0	$0	0.00%	−381−100.0%	Sold out
ING Groep NV	0	$0	0.00%	−378−100.0%	Sold out
Fisher Asset Management, LLC	0	$0	0.00%	−368−100.0%	Sold out
Daymark Wealth Partners, LLC	0	$0	0.00%	−367−100.0%	Sold out
NFP Retirement, Inc.	0	$0	0.00%	−353−100.0%	Sold out
Parcion Private Wealth LLC	0	$0	0.00%	−350−100.0%	Sold out
We Are One Seven, LLC	0	$0	0.00%	−348−100.0%	Sold out
Capital Investment Advisors, LLC	0	$0	0.00%	−345−100.0%	Sold out
Heartland Bank & Trust Co	0	$0	0.00%	−345−100.0%	Sold out
Sigma Planning Corp	0	$0	0.00%	−342−100.0%	Sold out
Global Assets Advisory, LLC	0	$0	0.00%	−190−100.0%	Sold out
Annis Gardner Whiting Capital Advisors, LLC	0	$0	0.00%	−143−100.0%	Sold out
Clayton Financial Group LLC	0	$0	0.00%	−140−100.0%	Sold out
Stephenson National Bank & Trust	0	$0	0.00%	−122−100.0%	Sold out
ZRC Wealth Management, LLC	0	$0	0.00%	−115−100.0%	Sold out
Opal Wealth Advisors, LLC	0	$0	0.00%	−97−100.0%	Sold out
Root Financial Partners, LLC	0	$0	0.00%	−92−100.0%	Sold out
Ameliora Wealth Management Ltd.	0	$0	0.00%	−66−100.0%	Sold out
Union Bancaire Privee, UBP SA	0	$0	0.00%	−57−100.0%	Sold out
Twin Peaks Wealth Advisors, LLC	0	$0	0.00%	−54−100.0%	Sold out
Wall Street Financial Group, Inc.	0	$0	0.00%	−36−100.0%	Sold out
New Age Alpha Advisors, LLC	0	$0	0.00%	−35−100.0%	Sold out
RWM Asset Management, LLC	0	$0	0.00%	−25−100.0%	Sold out
DAGCO, Inc.	0	$0	0.00%	−24−100.0%	Sold out
Timothy G. Youngquist 2020 Irrevocable Trust	0	$0	0.00%	−21−100.0%	Sold out
Bayforest Capital Ltd	0	$0	0.00%	−18−100.0%	Sold out
Sound Income Strategies, LLC	0	$0	0.00%	−13−100.0%	Sold out
YANKCOM Partnership	0	$0	0.00%	−13−100.0%	Sold out
First Pacific Financial	0	$0	0.00%	−12−100.0%	Sold out
Cassaday & Co Wealth Management LLC	0	$0	0.00%	−12−100.0%	Sold out
Bangor Savings Bank	0	$0	0.00%	−11−100.0%	Sold out
Cetera Trust Company, N.A	0	$0	0.00%	−11−100.0%	Sold out
HighMark Wealth Management LLC	0	$0	0.00%	−9−100.0%	Sold out
Trust Co of Toledo NA	0	$0	0.00%	−8−100.0%	Sold out
Magnolia Wealth Management, LLC	0	$0	0.00%	−8−100.0%	Sold out
Vermillion Wealth Management, Inc.	0	$0	0.00%	−4−100.0%	Sold out
Rachor Investment Advisory Services, LLC	0	$0	0.00%	−4−100.0%	Sold out
St Germain D J Co Inc	0	$0	0.00%	−3−100.0%	Sold out
Global Wealth Strategies & Associates	0	$0	0.00%	−3−100.0%	Sold out
Legacy Wealth Managment, LLC	0	$0	0.00%	−2−100.0%	Sold out
Synergy Investment Management, LLC	0	$0	0.00%	−2−100.0%	Sold out
Hamrick Investment Counsel, llc	0	$0	0.00%	−2−100.0%	Sold out
Lloyd Advisory Services, LLC.	0	$0	0.00%	−2−100.0%	Sold out
Portus Wealth Advisors, LLC	0	$0	0.00%	−2−100.0%	Sold out
Murphy & Mullick Capital Management Corp	0	$0	0.00%	−1−100.0%	Sold out
Napier Financial, LLC	0	$0	0.00%	−1−100.0%	Sold out
Janus Henderson Group PLC	–	–	–	–	Not filed
Exencial Wealth Advisors, LLC	–	–	–	–	Not filed
Evelyn Partners Investment Management LLP	–	–	–	–	Not filed
Jackson Hole Capital Partners, LLC	–	–	–	–	Not filed
CWM, LLC	–	–	–	–	Not filed
Skopos Labs, Inc.	–	–	–	–	Not filed
USA Financial Portformulas Corp	–	–	–	–	Not filed
North Ridge Wealth Advisors, Inc.	–	–	–	–	Not filed
Red Tortoise LLC	–	–	–	–	Not filed
Sunbelt Securities, Inc.	–	–	–	–	Not filed
Arcadia Investment Management Corp	–	–	–	–	Not filed