Martin Marietta Materials, Inc.
MX ˙ BMV ˙ US5732841060
SecurityMX:MLM / Martin Marietta Materials, Inc.
InstitutionCommonwealth Equity Services, Llc
Latest Disclosed Ownership8,832 shares
Latest Disclosed Value $ 5,499,627
Commonwealth Equity Services, Llc reports 7.05% decrease in ownership of MLM / Martin Marietta Materials, Inc.

On February 12, 2026 - Commonwealth Equity Services, Llc filed a 13F-HR form disclosing ownership of 8,832 shares of Martin Marietta Materials, Inc. (MX:MLM) valued at $5,499,627 USD as of December 31, 2025. The entity filed a previous 13F-HR on October 22, 2025 disclosing 9,502 shares of Martin Marietta Materials, Inc.. This represents a change in shares of -7.05% 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)
2026-02-12 2025-12-31 13F MARTIN MARIETTA MATLS COM 573284106 8,832 -670 -7.05 5,500 109,880.00
2025-10-22 2025-09-30 13F MARTIN MARIETTA MATLS COM 573284106 9,502 -1,176 -11.01 6 0.00 0.0078
2025-08-06 2025-06-30 13F MARTIN MARIETTA MATLS COM 573284106 10,678 -1,418 -11.72 6 0.00 0.0077
2025-05-09 2025-03-31 13F MARTIN MARIETTA MATLS COM 573284106 12,096 3,791 45.65 6 25.00 0.0082
2025-02-10 2024-12-31 13F MARTIN MARIETTA MATLS COM 573284106 8,305 80 0.97 4 0.00 0.0063
2024-10-18 2024-09-30 13F MARTIN MARIETTA MATLS COM 573284106 8,225 -39 -0.47 4 0.00 0.0067
2024-07-31 2024-06-30 13F MARTIN MARIETTA MATLS COM 573284106 8,264 142 1.75 4 0.00 0.0071
2024-04-29 2024-03-31 13F MARTIN MARIETTA MATLS COM 573284106 8,122 110 1.37 5 33.33 0.0083
2024-02-06 2023-12-31 13F MARTIN MARIETTA MATLS COM 573284106 8,012 112 1.42 4 0.00 0.0073
2023-10-23 2023-09-30 13F MARTIN MARIETTA MATLS COM 573284106 7,900 97 1.24 3 0.00 0.0067
2023-08-10 2023-06-30 13F MARTIN MARIETTA MATLS COM 573284106 7,803 -169 -2.12 4 50.00 0.0073
2023-05-11 2023-03-31 13F MARTIN MARIETTA MATLS COM 573284106 7,972 -35 -0.44 3 0.00 0.0059
2023-02-07 2022-12-31 13F MARTIN MARIETTA MATLS COM 573284106 8,007 -675 -7.77 3 -99.93 0.0065
2022-11-14 2022-09-30 13F MARTIN MARIETTA MATLS COM 573284106 8,682 -232 -2.60 2,796 4.84 0.0072
2022-07-19 2022-06-30 13F MARTIN MARIETTA MATLS COM 573284106 8,914 -210 -2.30 2,667 -24.06 0.0069
2022-05-04 2022-03-31 13F MARTIN MARIETTA MATLS COM 573284106 9,124 -2,980 -24.62 3,512 -34.13 0.0080
2022-01-31 2021-12-31 13F MARTIN MARIETTA MATLS COM 573284106 12,104 9 0.07 5,332 29.04 0.0120
2021-10-29 2021-09-30 13F MARTIN MARIETTA MATLS COM 573284106 12,095 -685 -5.36 4,132 -8.10 0.0104
2021-08-11 2021-06-30 13F MARTIN MARIETTA MATLS COM 573284106 12,780 -560 -4.20 4,496 0.36 0.0114
2021-05-04 2021-03-31 13F MARTIN MARIETTA MATLS COM 573284106 13,340 5,520 70.59 4,480 101.80 0.0127
2021-02-11 2020-12-31 13F MARTIN MARIETTA MATLS COM 573284106 7,820 1,403 21.86 2,220 47.02 0.0067
2020-11-05 2020-09-30 13F MARTIN MARIETTA MATLS COM 573284106 6,417 -318 -4.72 1,510 8.55 0.0052
2020-08-12 2020-06-30 13F MARTIN MARIETTA MATLS COM 573284106 6,735 1,586 30.80 1,391 42.81 0.0053
2020-05-11 2020-03-31 13F MARTIN MARIETTA MATLS COM 573284106 5,149 -342 -6.23 974 -36.55 0.0045
2020-02-05 2019-12-31 13F MARTIN MARIETTA MATLS COM 573284106 5,491 84 1.55 1,535 3.58 0.0058
2019-10-30 2019-09-30 13F MARTIN MARIETTA MATLS COM 573284106 5,407 254 4.93 1,482 25.06 0.0063
2019-07-19 2019-06-30 13F MARTIN MARIETTA MATLS COM 573284106 5,153 221 4.48 1,185 19.46 0.0052
2019-05-13 2019-03-31 13F MARTIN MARIETTA MATLS COM 573284106 4,932 -215 -4.18 992 12.22 0.0046
2019-02-11 2018-12-31 13F MARTIN MARIETTA MATLS COM 573284106 5,147 560 12.21 884 6.00 0.0047
2018-11-06 2018-09-30 13F MARTIN MARIETTA MATLS COM 573284106 4,587 1,075 30.61 834 6.38 0.0040
2018-07-31 2018-06-30 13F MARTIN MARIETTA MATLS COM 573284106 3,512 486 16.06 784 25.04 0.0041
2018-05-14 2018-03-31 13F MARTIN MARIETTA MATLS COM 573284106 3,026 -92 -2.95 627 -9.00 0.0034
2018-02-12 2017-12-31 13F MARTIN MARIETTA MATLS COM 573284106 3,118 3,118 689 0.0038
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.