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MLM — MARTIN MARIETTA MATLS INC

Reported value held$18.21B
Funds holding (latest)53
SectorIndustrials

Index member: S&P 500

Funds holding (Q2 2026)45
Institutional value$13.57B · 25.13M sh
New / Add / Cut / Exit4 / 21 / 17 / 1
Top-5 / Top-10 concentration55.4% / 77.9%
Institutional holdings change Accumulating +6.0% (+1.42M sh)
Institutional value change Up +3.8%

As of Q2 2026, 45 SEC-registered investment managers reported holding MLM (MARTIN MARIETTA MATLS INC) in their latest 13F filings, with a combined reported value of $13.57B across 25.13M shares. That is +6.0% by share count (+1.42M shares) versus the previous quarter, while reported value moved +3.8%. Ownership is concentrated: the five largest holders account for 55.4% of reported value and the top ten for 77.9%.

Compared with the prior quarter, 4 opened new positions, 21 added to existing stakes, 17 trimmed, 1 exited entirely. 13F holdings are quarter-end snapshots, so these moves reflect positioning as of Q2 2026, not real-time trading.

MLM is a constituent of the S&P 500 and is classified in the Industrials sector.

All figures on this page are computed from SEC Form 13F quarterly filings. 13F filers disclose long positions of $100,000 or more within 45 days of quarter end; short positions, options overlays and intra-quarter trades are not included, so treat the numbers as a quarterly snapshot of institutional ownership rather than real-time positioning.

FundQuarterSharesValuePortfolio WeightChange
Vanguard Group history Q4 2025 7.37M $4.59B 0.07% Reduce
BlackRock Inc history Q2 2026 4.69M $2.71B 0.04% Hold
Bank of America Corp history Q2 2026 2.45M $1.41B 0.09% Add
Fidelity Management & Research (FMR) history Q2 2026 2.19M $1.26B 0.06% Reduce
Principal Global Investors history Q2 2026 2.12M $1.22B 0.60% Add
Geode Capital Management history Q2 2026 1.60M $919.89M 0.05% Add
JPMorgan Chase & Co history Q2 2026 1.47M $852.60M 0.10% New
Goldman Sachs Group history Q2 2026 1.16M $670.89M 0.06% Add
Morgan Stanley history Q2 2026 1.01M $583.63M 0.03% Reduce
Baillie Gifford & Co history Q2 2026 991.79K $571.96M 0.52% Reduce
Invesco Ltd history Q2 2026 649.58K $374.61M 0.03% Reduce
Alkeon Capital Management history Q2 2026 627.35K $361.79M 0.49% Reduce
Northern Trust Corp history Q2 2026 570.35K $328.92M 0.04% Reduce
Norges Bank Investment Management history Q2 2026 557.14K $321.30M 0.03% Reduce
Charles Schwab Investment Management history Q2 2026 492.54K $284.05M 0.04% Add
Franklin Resources history Q2 2026 459.33K $264.89M 0.06% Reduce
UBS Group AG history Q2 2026 390.43K $225.16M 0.03% Add
BNY Mellon history Q2 2026 345.62K $199.32M 0.03% Reduce
Wells Fargo & Co history Q2 2026 278.81K $160.79M 0.03% Add
Amundi US history Q2 2026 263.50K $151.96M 0.04% Hold

View all 53 fund holders →

New Positions (Q2 2026)

Fully Exited (vs previous quarter)

Fund Position History — shares by quarter (top 20 funds)

FundQ3 2021Q4 2021Q1 2022Q2 2022Q3 2022Q4 2022Q1 2023Q2 2023Q3 2023Q4 2023Q1 2024Q2 2024Q3 2024Q4 2024Q1 2025Q2 2025Q3 2025Q4 2025Q1 2026Q2 2026
BlackRock Inc — — — — — — — — — — — — 4.06M 4.26M 4.31M 4.23M 4.15M 4.49M 4.69M 4.69M
Bank of America Corp 612.02K 574.82K 628.52K 627.39K 637.39K 628.38K 638.94K 506.71K 555.52K 534.36K 1.62M 1.66M 1.71M 1.59M 1.77M 2.34M 2.37M 2.38M 2.40M 2.45M
Fidelity Management & Research (FMR) 558.76K 588.22K 636.20K 562.08K 506.65K 536.13K 534.73K 563.84K 1.83M 1.73M 2.03M 2.18M 2.52M 2.51M 2.66M 3.01M 2.88M 2.92M 2.61M 2.19M
Principal Global Investors 1.10M 1.06M 1.05M 1.03M 1.02M 996.07K 977.64K 978.74K 961.64K 959.05K 948.91K 924.24K 1.63M 1.82M 1.94M 2.01M 2.20M 2.17M 2.09M 2.12M
Geode Capital Management 1.15M 1.18M 1.23M 1.27M 1.23M 1.26M 1.29M 1.31M 1.40M 1.43M 1.48M 1.52M 1.44M 1.47M 1.52M 1.52M 1.54M 1.55M 1.59M 1.60M
JPMorgan Chase & Co 1.43M 1.24M 1.98M 2.48M 2.26M 2.16M 1.84M 1.86M 2.04M 2.11M 2.09M 2.17M 2.68M 2.68M 2.94M 2.96M 2.93M 2.23M — 1.47M
Goldman Sachs Group 851.01K 849.11K 919.18K 923.72K 1.17M 1.08M 1.04M 1.01M 1.00M 919.23K 886.93K 869.24K 787.69K 976.71K 939.13K 832.70K 818.11K 792.52K 885.86K 1.16M
Morgan Stanley 1.04M 916.40K 437.49K 579.82K 486.77K 737.82K 709.89K 776.82K 750.63K 786.44K 783.76K 806.53K 839.12K 951.35K 925.21K 1.28M 1.30M 1.37M 1.34M 1.01M
Baillie Gifford & Co 3.75M 4.34M 3.89M 3.60M 3.41M 3.15M 2.89M 2.82M 2.76M 2.64M 2.27M 2.21M 2.12M 1.91M 1.26M 1.23M 1.20M 1.16M 1.09M 991.79K
Invesco Ltd 375.35K 318.36K 362.16K 391.45K 347.99K 353.99K 348.63K 465.21K 570.19K 614.59K 562.51K 688.20K 828.95K 873.63K 854.24K 712.46K 704.28K 769.90K 690.91K 649.58K
Alkeon Capital Management 669.45K 299.91K 292.34K 464.43K 414.70K 359.40K 306.32K 371.19K 360.11K 389.67K 481.67K 526.67K 526.20K 771.20K 770.35K 802.35K 747.35K 747.35K 747.35K 627.35K
Northern Trust Corp 693.94K 685.06K 676.70K 648.64K 631.65K 640.43K 636.46K 593.08K 615.47K 589.36K 563.90K 563.02K 529.16K 617.79K 633.47K 614.43K 602.08K 599.66K 586.50K 570.35K
Norges Bank Investment Management — — — — — 584.64K — — — 618.76K — 656.16K — 594.12K — 425.92K — 569.62K — 557.14K
Charles Schwab Investment Management 286.62K 294.94K 303.38K 306.51K 335.81K 346.25K 351.70K 352.44K 353.97K 364.28K 372.19K 380.68K 382.92K 397.32K 416.36K 421.16K 436.35K 448.88K 460.52K 492.54K
Franklin Resources 358.26K 356.56K 358.19K 355.75K 352.91K 348.30K 346.49K 338.26K 334.68K 387.13K 524.09K 524.89K 534.80K 524.59K 525.68K 527.97K 506.07K 498.33K 528.20K 459.33K
UBS Group AG 107.50K 112.75K 98.29K 94.40K 86.60K 117.79K 111.01K 139.54K 133.87K 127.44K 175.53K 262.27K 164.58K 388.72K 430.21K 367.61K 335.89K 236.43K 356.27K 390.43K
BNY Mellon 602.74K 598.36K 449.65K 521.70K 743.95K 666.81K 603.36K 572.87K 547.97K 525.23K 453.95K 465.70K 440.15K 425.52K 412.49K 394.36K 390.02K 370.88K 370.96K 345.62K
Wells Fargo & Co 134.64K 200 140.00K 135.45K 127.26K 126.44K 125.87K 122.63K 110.20K 109.92K 118.50K 125.93K 116.91K 124.07K 142.77K 144.02K 157.42K 241.56K 266.61K 278.81K
Amundi US 881.73K 867.00K 851.32K 1.01M 1.15M 1.44M 1.68M 1.54M 1.71M 1.68M 1.54M 1.11M 1.41M 1.56M 1.71M 115.76K 134.55K 206.12K 264.12K 263.50K
Legal & General Investment Management America 395.38K 369.85K 353.46K 333.31K 326.73K 309.32K 318.23K 311.39K 294.37K 351.41K 340.46K 339.39K 339.34K 255.72K 265.22K 274.58K 274.96K 271.30K 266.54K 249.52K

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