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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; 1,079 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, Q1 2026

Institutional positions in Martin Marietta Materials Inc as of Mar 31, 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
1,077
−27 vs. Q4 2025
Shares held
58.4M
+7.30M (+14.3%) vs. Q4 2025
Total value
$34.3B
+$2.51B (+7.9%) vs. Q4 2025
New holders
103
370 more added
Sold out
130
377 more reduced

13 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q4 2025: 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 holdersQ1 2026: 1,077 institutions
Q1 2021: 692 institutionsQ2 2021: 696 institutionsQ3 2021: 700 institutionsQ4 2021: 775 institutionsQ1 2022: 763 institutionsQ2 2022: 728 institutionsQ3 2022: 736 institutionsQ4 2022: 768 institutionsQ1 2023: 746 institutionsQ2 2023: 804 institutionsQ3 2023: 815 institutionsQ4 2023: 889 institutionsQ1 2024: 957 institutionsQ2 2024: 940 institutionsQ3 2024: 948 institutionsQ4 2024: 992 institutionsQ1 2025: 953 institutionsQ2 2025: 999 institutionsQ3 2025: 1,053 institutionsQ4 2025: 1,117 institutionsQ1 2026: 1,077 institutionsQ2 2026: 1,079 institutions
Value heldQ1 2026: $34.3B
Q1 2021: $19.4BQ2 2021: $20.3BQ3 2021: $19.7BQ4 2021: $25.6BQ1 2022: $22.7BQ2 2022: $17.5BQ3 2022: $18.8BQ4 2022: $19.7BQ1 2023: $20.7BQ2 2023: $27.0BQ3 2023: $24.1BQ4 2023: $29.3BQ1 2024: $36.4BQ2 2024: $32.3BQ3 2024: $32.4BQ4 2024: $30.5BQ1 2025: $28.5BQ2 2025: $32.8BQ3 2025: $36.7BQ4 2025: $37.1BQ1 2026: $34.3BQ2 2026: $34.2B
Institutions holding MLM and their total value by quarter
QuarterHoldersValue
Q2 20261,079$34.2B
Q1 20261,077$34.3B
Q4 20251,117$37.1B
Q3 20251,053$36.7B
Q2 2025999$32.8B
Q1 2025953$28.5B
Q4 2024992$30.5B
Q3 2024948$32.4B
Q2 2024940$32.3B
Q1 2024957$36.4B
Q4 2023889$29.3B
Q3 2023815$24.1B
Q2 2023804$27.0B
Q1 2023746$20.7B
Q4 2022768$19.7B
Q3 2022736$18.8B
Q2 2022728$17.5B
Q1 2022763$22.7B
Q4 2021775$25.6B
Q3 2021700$19.7B
Q2 2021696$20.3B
Q1 2021692$19.4B

Institutions, Q1 2026

Shares, value and share of portfolio for each institution holding Martin Marietta Materials Inc; share changes are against Q4 2025.

Institutions holding MLM in Q1 2026
InstitutionSharesValue% of portfolioChange in sharesAction
Strengthening Families & Communities, LLC9$5.39K0.00%+9New
Asset Planning,Inc9$5.30K0.00%00.0%Unchanged
HighMark Wealth Management LLC9$5.30K0.00%00.0%Unchanged
Joseph Group Capital Management9$5.30K0.00%+9New
Capital Analysts, LLC8$5.00K0.00%−13−61.9%Reduced
Creative Financial Designs Inc8$4.71K0.00%00.0%Unchanged
Mascoma Wealth Management LLC8$4.71K0.00%00.0%Unchanged
Bay Harbor Wealth Management, LLC8$4.71K0.00%+1+14.3%Added
Trust Co of Toledo NA8$4.71K0.00%+8New
Magnolia Wealth Management, LLC8$4.71K0.00%+8New
Dunhill Financial, LLC7$4.25K0.00%−1−12.5%Reduced
Clark Wealth Partners7$4.12K0.00%−8−53.3%Reduced
Mowery & Schoenfeld Wealth Management, LLC7$4.12K0.01%−3−30.0%Reduced
C M Bidwell & Associates Ltd7$4.12K0.00%00.0%Unchanged
North Star Investment Management Corp.7$4.12K0.00%+1+16.7%Added
Hughes Financial Services, LLC7$4.12K0.00%+1+16.7%Added
Strategic Wealth Advisors LLC7$4.00K0.00%00.0%Unchanged
Y.D. More Investments Ltd2,081$3.87K0.00%−28−1.3%Reduced
Torren Management, LLC6$3.56K0.00%−110−94.8%Reduced
UMA Financial Services, Inc.6$3.53K0.00%−13−68.4%Reduced
Manchester Capital Management LLC6$3.53K0.00%00.0%Unchanged
DiNuzzo Private Wealth, Inc.6$3.53K0.00%00.0%Unchanged
Sunbelt Securities, Inc.6$3.53K0.00%00.0%Unchanged
MTM Investment Management, LLC6$3.53K0.00%00.0%Unchanged
Fairman Group, LLC6$3.53K0.00%00.0%Unchanged
Granite FO LLC6$3.53K0.00%00.0%Unchanged
MPWM Advisory Solutions, LLC6$3.53K0.00%00.0%Unchanged
Penserra Capital Management LLC6$3.00K0.00%00.0%Unchanged
Key Financial Inc5$2.94K0.00%−2−28.6%Reduced
Bullseye Investment Management, LLC5$2.94K0.00%00.0%Unchanged
Smallwood Wealth Investment Management, LLC5$2.94K0.00%00.0%Unchanged
Advocate Investing Services LLC5$2.94K0.00%00.0%Unchanged
TD Capital Management LLC4$2.38K0.00%00.0%Unchanged
Morse Asset Management, Inc4$2.35K0.00%−1−20.0%Reduced
Heritage Wealth Advisors4$2.35K0.00%00.0%Unchanged
Rachor Investment Advisory Services, LLC4$2.35K0.00%00.0%Unchanged
Vermillion Wealth Management, Inc.4$2.35K0.00%+4New
Burk Holdings LLC4$2.35K0.00%+4New
Capital Advisors, Ltd. LLC4$2.00K0.00%+1+33.3%Added
JNBA Financial Advisors3$1.77K0.00%00.0%Unchanged
HHM Wealth Advisors, LLC3$1.77K0.00%00.0%Unchanged
TFC Financial Management3$1.77K0.00%00.0%Unchanged
Beaird Harris Wealth Management, LLC3$1.77K0.00%00.0%Unchanged
MCF Advisors LLC3$1.77K0.00%+3New
Valued Wealth Advisors LLC3$1.77K0.00%+3New
American Capital Advisory, LLC3$1.77K0.00%+3New
High Note Wealth, LLC3$1.77K0.00%00.0%Unchanged
Signature Resources Capital Management, LLC3$1.77K0.00%00.0%Unchanged
Bare Financial Services, Inc3$1.77K0.00%+2+200.0%Added
St Germain D J Co Inc3$1.77K0.00%+3New
Global Wealth Strategies & Associates3$1.77K0.00%+3New
Kayne Anderson Rudnick Investment Management LLC2$1.41K0.00%−1−33.3%Reduced
Legacy Wealth Managment, LLC2$1.18K0.00%00.0%Unchanged
Synergy Investment Management, LLC2$1.18K0.00%+2New
Hamrick Investment Counsel, llc2$1.18K0.00%+2New
Imprint Wealth LLC2$1.18K0.01%−14−87.5%Reduced
HFM Investment Advisors, LLC2$1.18K0.00%00.0%Unchanged
WPG Advisers, LLC2$1.18K0.00%00.0%Unchanged
Principia Wealth Advisory, LLC2$1.18K0.00%+1+100.0%Added
Lloyd Advisory Services, LLC.2$1.18K0.00%+2New
Washington Trust Advisors, Inc.2$1.18K0.00%+2New
Kingdom Financial Group LLC.2$1.18K0.00%+2New
Portus Wealth Advisors, LLC2$1.18K0.00%+2New
Phillip James Consulting Co.1$1.00K0.00%+1New
PEAK6 LLC2$9410.00%+2New
E Fund Management (Hong Kong) Co., Ltd.1$5890.00%00.0%Unchanged
Arcadia Investment Management Corp1$5890.00%00.0%Unchanged
Trust Co1$5890.00%00.0%Unchanged
Quaker Wealth Management, LLC1$5890.00%00.0%Unchanged
DHJJ Financial Advisors, Ltd.1$5890.00%00.0%Unchanged
DecisionPoint Financial, LLC1$5890.00%00.0%Unchanged
Cherry Tree Wealth Management, LLC1$5890.00%00.0%Unchanged
Breakwater Investment Management1$5890.00%00.0%Unchanged
Seneschal Advisors, LLC1$5890.00%00.0%Unchanged
Murphy & Mullick Capital Management Corp1$5890.00%00.0%Unchanged
Davis Capital Management1$5890.00%+1New
Napier Financial, LLC1$5890.00%+1New
Freestone Grove Partners LP0$00.00%−151,872−100.0%Sold out
Walleye Capital LLC0$00.00%−49,228−100.0%Sold out
Qube Research & Technologies Ltd0$00.00%−46,785−100.0%Sold out
Weiss Asset Management LP0$00.00%−41,668−100.0%Sold out
Marsico Capital Management LLC0$00.00%−19,533−100.0%Sold out
Shellback Capital, LP0$00.00%−15,920−100.0%Sold out
Connor, Clark & Lunn Investment Management Ltd.0$00.00%−11,954−100.0%Sold out
Skandinaviska Enskilda Banken AB (publ)0$00.00%−11,929−100.0%Sold out
Rakuten Investment Management, Inc.0$00.00%−7,934−100.0%Sold out
Mediolanum International Funds Ltd0$00.00%−6,488−100.0%Sold out
Dockside LLC0$00.00%−5,986−100.0%Sold out
Gallo Partners, LP0$00.00%−4,460−100.0%Sold out
Capital Wealth Planning, LLC0$00.00%−4,325−100.0%Sold out
Delta Global Management LP0$00.00%−3,887−100.0%Sold out
Sandler Capital Management0$00.00%−3,799−100.0%Sold out
Magnetar Financial LLC0$00.00%−3,784−100.0%Sold out
Kentucky Retirement Systems0$00.00%−3,765−100.0%Sold out
Hudson Canyon Capital Management0$00.00%−3,603−100.0%Sold out
Quest Partners LLC0$00.00%−2,647−100.0%Sold out
Symmetry Investments LP0$00.00%−2,360−100.0%Sold out
Stance Capital LLC0$00.00%−2,208−100.0%Sold out
Ieq Capital, LLC0$00.00%−2,169−100.0%Sold out
HRT Financial LP0$00.00%−2,073−100.0%Sold out