Martin Marietta Materials, Inc.
MX ˙ BMV ˙ US5732841060
SecurityMX:MLM / Martin Marietta Materials, Inc.
InstitutionFirst Trust Advisors Lp
Latest Disclosed Ownership20,309 shares
Latest Disclosed Value $ 11,955,464
First Trust Advisors Lp reports 15.40% decrease in ownership of MLM / Martin Marietta Materials, Inc.

On May 13, 2026 - First Trust Advisors Lp filed a 13F-HR form disclosing ownership of 20,309 shares of Martin Marietta Materials, Inc. (MX:MLM) valued at $11,955,464 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 24,006 shares of Martin Marietta Materials, Inc.. This represents a change in shares of -15.40% 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)
2026-05-13 2026-03-31 13F MARTIN MARIETTA MATLS COM 573284106 20,309 -3,697 -15.40 11,955 -20.02 0.0085
2026-02-13 2025-12-31 13F MARTIN MARIETTA MATLS COM 573284106 24,006 8,570 55.52 14,948 53.63 0.0109
2025-11-12 2025-09-30 13F MARTIN MARIETTA MATLS COM 573284106 15,436 -32,703 -67.93 9,729 -63.18 0.0072
2025-08-13 2025-06-30 13F MARTIN MARIETTA MATLS COM 573284106 48,139 -6,072 -11.20 26,427 1.96 0.0213
2025-05-14 2025-03-31 13F MARTIN MARIETTA MATLS COM 573284106 54,211 11,618 27.28 25,920 17.82 0.0230
2025-02-13 2024-12-31 13F MARTIN MARIETTA MATLS COM 573284106 42,593 -27,377 -39.13 21,999 -41.59 0.0194
2024-11-13 2024-09-30 13F MARTIN MARIETTA MATLS COM 573284106 69,970 -275,870 -79.77 37,661 -79.90 0.0359
2024-08-13 2024-06-30 13F MARTIN MARIETTA MATLS COM 573284106 345,840 311,805 916.13 187,376 796.75 0.1910
2024-05-13 2024-03-31 13F MARTIN MARIETTA MATLS COM 573284106 34,035 7,159 26.64 20,895 55.84 0.0212
2024-02-13 2023-12-31 13F MARTIN MARIETTA MATLS COM 573284106 26,876 19,591 268.92 13,409 348.43 0.0146
2023-11-13 2023-09-30 13F MARTIN MARIETTA MATLS COM 573284106 7,285 -23,070 -76.00 2,990 -78.66 0.0035
2023-08-14 2023-06-30 13F MARTIN MARIETTA MATLS COM 573284106 30,355 -5,375 -15.04 14,015 10.47 0.0159
2023-05-15 2023-03-31 13F MARTIN MARIETTA MATLS COM 573284106 35,730 -8,840 -19.83 12,686 -15.79 0.0146
2023-02-09 2022-12-31 13F MARTIN MARIETTA MATLS COM 573284106 44,570 29,661 198.95 15,064 213.70 0.0179
2022-11-14 2022-09-30 13F MARTIN MARIETTA MATLS COM 573284106 14,909 -17,926 -54.59 4,802 -51.13 0.0062
2022-08-12 2022-06-30 13F MARTIN MARIETTA MATLS COM 573284106 32,835 -10,249 -23.79 9,826 -40.75 0.0121
2022-05-13 2022-03-31 13F MARTIN MARIETTA MATLS COM 573284106 43,084 9,355 27.74 16,583 11.61 0.0170
2022-02-08 2021-12-31 13F MARTIN MARIETTA MATLS COM 573284106 33,729 -32,915 -49.39 14,858 -34.75 0.0145
2021-11-15 2021-09-30 13F MARTIN MARIETTA MATLS COM 573284106 66,644 -22,758 -25.46 22,771 -27.60 0.0245
2021-10-12 2021-06-30 13F/A-1 MARTIN MARIETTA MATLS COM 573284106 89,402 7,819 9.58 31,453 14.80 0.0340
2021-08-16 2021-06-30 13F MARTIN MARIETTA MATLS COM 573284106 89,402 7,819 31,453 0.0324
2021-05-14 2021-03-31 13F MARTIN MARIETTA MATLS COM 573284106 81,583 45,288 124.78 27,397 165.81 0.0332
2021-02-02 2020-12-31 13F MARTIN MARIETTA MATLS COM 573284106 36,295 22,523 163.54 10,307 218.02 0.0137
2020-11-05 2020-09-30 13F MARTIN MARIETTA MATLS COM 573284106 13,772 230 1.70 3,241 15.87 0.0052
2020-07-22 2020-06-30 13F MARTIN MARIETTA MATLS COM 573284106 13,542 -8,015 -37.18 2,797 -31.43 0.0048
2020-05-06 2020-03-31 13F MARTIN MARIETTA MATLS COM 573284106 21,557 -5,163 -19.32 4,079 -45.41 0.0092
2020-02-03 2019-12-31 13F MARTIN MARIETTA MATLS COM 573284106 26,720 7,420 38.45 7,472 41.25 0.0128
2019-11-04 2019-09-30 13F MARTIN MARIETTA MATLS COM 573284106 19,300 -4,676 -19.50 5,290 -4.11 0.0100
2019-07-30 2019-06-30 13F MARTIN MARIETTA MATLS COM 573284106 23,976 -1,537 -6.02 5,517 7.48 0.0104
2019-06-19 2019-03-31 13F/A-1 MARTIN MARIETTA MATLS COM 573284106 25,513 -3,659 -12.54 5,133 2.37 0.0102
2019-05-09 2019-03-31 13F MARTIN MARIETTA MATLS COM 573284106 25,513 -3,659 5,133
2019-02-07 2018-12-31 13F MARTIN MARIETTA MATLS COM 573284106 29,172 -10,364 -26.21 5,014 -30.30 0.0119
2018-10-25 2018-09-30 13F MARTIN MARIETTA MATLS COM 573284106 39,536 -998 -2.46 7,194 -20.53 0.0134
2018-08-02 2018-06-30 13F MARTIN MARIETTA MATLS COM 573284106 40,534 40,534 9,052 0.0188
2018-04-23 2018-03-31 13F MARTIN MARIETTA MATLS COM 573284106 0 -8,811 -100.00 0 -100.00
2018-02-08 2017-12-31 13F MARTIN MARIETTA MATLS COM 573284106 8,811 -3,202 -26.65 1,948 -21.36 0.0046
2017-10-24 2017-09-30 13F MARTIN MARIETTA MATLS COM 573284106 12,013 -34,480 -74.16 2,477 -76.06 0.0064
2017-08-02 2017-06-30 13F MARTIN MARIETTA MATLS COM 573284106 46,493 -49,260 -51.44 10,348 -50.48 0.0276
2017-05-02 2017-03-31 13F MARTIN MARIETTA MATLS COM 573284106 95,753 50,806 113.04 20,898 109.88 0.0579
2017-02-06 2016-12-31 13F MARTIN MARIETTA MATLS COM 573284106 44,947 -73,475 -62.05 9,957 -53.06 0.0296
2016-11-01 2016-09-30 13F MARTIN MARIETTA MATLS COM 573284106 118,422 4,663 4.10 21,211 -2.89 0.0633
2016-08-04 2016-06-30 13F MARTIN MARIETTA MATLS COM 573284106 113,759 60,608 114.03 21,842 157.63 0.0688
2016-05-10 2016-03-31 13F MARTIN MARIETTA MATLS COM 573284106 53,151 -65,943 -55.37 8,478 -47.88 0.0272
2016-05-04 2015-12-31 13F/A-1 MARTIN MARIETTA MATLS COM 573284106 119,094 8,879 8.06 16,266 -2.87 0.0422
2016-02-03 2015-12-31 13F MARTIN MARIETTA MATLS COM 573284106 119,094 16,266
2015-11-05 2015-09-30 13F MARTIN MARIETTA MATLS COM 573284106 110,215 24,244 28.20 16,747 37.65 0.0485
2015-08-04 2015-06-30 13F MARTIN MARIETTA MATLS COM 573284106 85,971 75,394 712.81 12,166 722.58 0.0316
2015-05-04 2015-03-31 13F MARTIN MARIETTA MATLS COM 573284106 10,577 -48,323 -82.04 1,479 -77.24 0.0043
2015-02-13 2014-12-31 13F MARTIN MARIETTA MATLS COM 573284106 58,900 -59,564 -50.28 6,498 -57.46 0.0219
2014-11-12 2014-09-30 13F MARTIN MARIETTA MATLS COM 573284106 118,464 -35,952 -23.28 15,275 -25.09 0.0601
2014-08-11 2014-06-30 13F MARTIN MARIETTA MATLS COM 573284106 154,416 154,416 538.48 20,391 758.93 0.0847
2014-08-08 2013-12-31 13F/A-1 MARTIN MARIETTA MATLS COM 573284106 0 -24,185 -100.00 0 -100.00
2013-11-12 2013-09-30 13F MARTIN MARIETTA MATLS COM 573284106 24,185 -15,054 -38.36 2,374 -38.53 0.0129
2013-08-12 2013-06-30 13F MARTIN MARIETTA MATLS COM 573284106 39,239 39,239 3,862 0.0251
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.