Martin Marietta Materials, Inc.
MX ˙ BMV ˙ US5732841060
SecurityMX:MLM / Martin Marietta Materials, Inc.
InstitutionChevy Chase Trust Holdings, Inc.
Latest Disclosed Ownership30,940 shares
Latest Disclosed Value $ 18,213,760
Chevy Chase Trust Holdings, Inc. reports 2.81% decrease in ownership of MLM / Martin Marietta Materials, Inc.

On May 15, 2026 - Chevy Chase Trust Holdings, Inc. filed a 13F-HR form disclosing ownership of 30,940 shares of Martin Marietta Materials, Inc. (MX:MLM) valued at $18,213,760 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 31,836 shares of Martin Marietta Materials, Inc.. This represents a change in shares of -2.81% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F MARTIN MARIETTA MATLS COM 573284106 30,940 -896 -2.81 18,214 -8.12 0.0381
2026-02-13 2025-12-31 13F MARTIN MARIETTA MATLS COM 573284106 31,836 -139 -0.43 19,823 -1.64 0.0536
2025-11-14 2025-09-30 13F MARTIN MARIETTA MATLS COM 573284106 31,975 -1,065 -3.22 20,153 11.12 0.0554
2025-07-29 2025-06-30 13F MARTIN MARIETTA MATLS COM 573284106 33,040 -210 -0.63 18,138 14.09 0.0528
2025-04-23 2025-03-31 13F MARTIN MARIETTA MATLS COM 573284106 33,250 -68 -0.20 15,898 -7.62 0.0508
2025-01-30 2024-12-31 13F MARTIN MARIETTA MATLS COM 573284106 33,318 -694 -2.04 17,209 -6.00 0.0524
2024-11-14 2024-09-30 13F MARTIN MARIETTA MATLS COM 573284106 34,012 -908 -2.60 18,307 -3.24 0.0561
2024-07-22 2024-06-30 13F MARTIN MARIETTA MATLS COM 573284106 34,920 -772 -2.16 18,920 -13.66 0.0604
2024-05-03 2024-03-31 13F MARTIN MARIETTA MATLS COM 573284106 35,692 -99 -0.28 21,913 22.72 0.0717
2024-01-24 2023-12-31 13F MARTIN MARIETTA MATLS COM 573284106 35,791 -194 -0.54 17,856 20.89 0.0639
2023-10-23 2023-09-30 13F MARTIN MARIETTA MATLS COM 573284106 35,985 -885 -2.40 14,771 -13.22 0.0583
2023-07-25 2023-06-30 13F MARTIN MARIETTA MATLS COM 573284106 36,870 -633 -1.69 17,023 27.84 0.0638
2023-05-17 2023-03-31 13F/A-1 MARTIN MARIETTA MATLS COM 573284106 37,503 336 0.90 13,316 6.00 0.0527
2023-05-16 2023-03-31 13F MARTIN MARIETTA MATLS COM 573284106 1,111 -36,056 394 0.0539
2023-02-09 2022-12-31 13F MARTIN MARIETTA MATLS COM 573284106 37,167 -3,390 -8.36 12,561 -3.84 0.0534
2022-11-04 2022-09-30 13F MARTIN MARIETTA MATLS COM 573284106 40,557 1,475 3.77 13,063 11.70 0.0558
2022-08-10 2022-06-30 13F MARTIN MARIETTA MATLS COM 573284106 39,082 107 0.27 11,695 -22.04 0.0484
2022-04-27 2022-03-31 13F MARTIN MARIETTA MATLS COM 573284106 38,975 45 0.12 15,002 -12.52 0.0517
2022-01-31 2021-12-31 13F MARTIN MARIETTA MATLS COM 573284106 38,930 -887 -2.23 17,150 26.07 0.0553
2021-10-20 2021-09-30 13F MARTIN MARIETTA MATLS COM 573284106 39,817 -1,542 -3.73 13,604 -6.51 0.0474
2021-07-20 2021-06-30 13F MARTIN MARIETTA MATLS COM 573284106 41,359 -2,111 -4.86 14,551 -0.32 0.0495
2021-04-22 2021-03-31 13F MARTIN MARIETTA MATLS COM 573284106 43,470 -3,026 -6.51 14,598 10.57 0.0520
2021-02-12 2020-12-31 13F MARTIN MARIETTA MATLS COM 573284106 46,496 -1,438 -3.00 13,203 17.03 0.0471
2020-11-06 2020-09-30 13F MARTIN MARIETTA MATLS COM 573284106 47,934 -4,150 -7.97 11,282 4.86 0.0446
2020-08-14 2020-06-30 13F MARTIN MARIETTA MATLS COM 573284106 52,084 -3,032 -5.50 10,759 3.15 0.0436
2020-05-13 2020-03-31 13F MARTIN MARIETTA MATLS COM 573284106 55,116 462 0.85 10,430 -31.75 0.0485
2020-02-12 2019-12-31 13F MARTIN MARIETTA MATERIALS COM 573284106 54,654 -349 -0.63 15,283 1.37 0.0578
2019-11-20 2019-09-30 13F MARTIN MARIETTA MATLS COM 573284106 55,003 382 0.70 15,076 19.96 0.0618
2019-08-14 2019-06-30 13F MARTIN MARIETTA MATLS COM 573284106 54,621 369 0.68 12,568 4.63 0.0521
2019-05-13 2019-03-31 13F MARTIN MARIETTA MATLS COM 573284106 54,252 261 0.48 12,012 29.45 0.0497
2019-02-14 2018-12-31 13F MARTIN MARIETTA MATLS COM 573284106 53,991 -126 -0.23 9,279 -5.77 0.0453
2018-10-23 2018-09-30 13F MARTIN MARIETTA MATLS COM 573284106 54,117 -2,302 -4.08 9,847 -21.85 0.0408
2018-08-02 2018-06-30 13F MARTIN MARIETTA MATLS COM 573284106 56,419 -695 -1.22 12,600 6.42 0.0546
2018-04-10 2018-03-31 13F MARTIN MARIETTA MATLS COM 573284106 57,114 -301 -0.52 11,840 -6.71 0.0526
2018-01-22 2017-12-31 13F MARTIN MARIETTA MATLS COM 573284106 57,415 -452 -0.78 12,691 6.34 0.0547
2017-11-14 2017-09-30 13F MARTIN MARIETTA MATLS COM 573284106 57,867 549 0.96 11,934 -6.46 0.0541
2017-07-13 2017-06-30 13F MARTIN MARIETTA MATLS COM 573284106 57,318 -576 -0.99 12,758 0.97 0.0611
2017-04-05 2017-03-31 13F MARTIN MARIETTA MATLS COM 573284106 57,894 1,278 2.26 12,635 0.74 0.0620
2017-01-09 2016-12-31 13F MARTIN MARIETTA MATLS COM 573284106 56,616 96 0.17 12,542 23.90 0.0665
2016-10-05 2016-09-30 13F MARTIN MARIETTA MATLS COM 573284106 56,520 -1,476 -2.55 10,123 -9.09 0.0554
2016-07-08 2016-06-30 13F MARTIN MARIETTA MATLS COM 573284106 57,996 -113 -0.19 11,135 20.13 0.0621
2016-04-07 2016-03-31 13F MARTIN MARIETTA MATLS COM 573284106 58,109 797 1.39 9,269 18.41 0.0530
2016-01-15 2015-12-31 13F MARTIN MARIETTA MATLS COM 573284106 57,312 -334 -0.58 7,828 -10.63 0.0459
2015-10-15 2015-09-30 13F MARTIN MARIETTA MATLS COM 573284106 57,646 4,693 8.86 8,759 16.90 0.0547
2015-07-15 2015-06-30 13F MARTIN MARIETTA MATLS COM 573284106 52,953 744 1.43 7,493 2.66 0.0449
2015-04-17 2015-03-31 13F/A-1 MARTIN MARIETTA MATLS COM 573284106 52,209 1,526 3.01 7,299 30.53 0.0440
2015-04-15 2015-03-31 13F MARTIN MARIETTA MATLS COM 573284106 52,146 7,288
2015-01-15 2014-12-31 13F MARTIN MARIETTA MATLS COM 573284106 50,683 -263 -0.52 5,592 -14.87 0.0350
2014-10-17 2014-09-30 13F MARTIN MARIETTA MATLS COM 573284106 50,946 46,399 1,020.43 6,569 994.83 0.0425
2014-07-16 2014-06-30 13F MARTIN MARIETTA MATLS COM 573284106 4,547 -149 -3.17 600 -0.50 0.0042
2014-04-15 2014-03-31 13F MARTIN MARIETTA MATLS COM 573284106 4,696 -425 -8.30 603 17.77 0.0043
2014-01-23 2013-12-31 13F MARTIN MARIETTA MATLS COM 573284106 5,121 -693 -11.92 512 -10.33 0.0037
2013-10-15 2013-09-30 13F MARTIN MARIETTA MATLS COM 573284106 5,814 -200 -3.33 571 -3.55 0.0047
2013-07-18 2013-06-30 13F/A-2 MARTIN MARIETTA MATLS COM 573284106 6,014 6,014 592 0.0052
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.