Martin Marietta Materials, Inc.
MX ˙ BMV ˙ US5732841060
SecurityMX:MLM / Martin Marietta Materials, Inc.
InstitutionCredit Agricole S A
Latest Disclosed Ownership47,647 shares
Latest Disclosed Value $ 28,048,836
Credit Agricole S A reports 3.86% increase in ownership of MLM / Martin Marietta Materials, Inc.

On May 15, 2026 - Credit Agricole S A filed a 13F-HR form disclosing ownership of 47,647 shares of Martin Marietta Materials, Inc. (MX:MLM) valued at $28,048,836 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 45,875 shares of Martin Marietta Materials, Inc.. This represents a change in shares of 3.86% 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 47,647 1,772 3.86 28,049 -1.81 0.0233
2026-02-17 2025-12-31 13F MARTIN MARIETTA MATLS COM 573284106 45,875 5,344 13.18 28,565 11.82 0.0649
2025-11-14 2025-09-30 13F MARTIN MARIETTA MATLS COM 573284106 40,531 -21,066 -34.20 25,546 -13.26 0.0677
2025-05-14 2025-03-31 13F MARTIN MARIETTA MATLS COM 573284106 61,597 7,775 14.45 29,451 5.94 0.0925
2025-02-14 2024-12-31 13F MARTIN MARIETTA MATLS COM 573284106 53,822 21,643 67.26 27,799 60.50 0.0815
2024-11-14 2024-09-30 13F MARTIN MARIETTA MATLS COM 573284106 32,179 20,577 177.36 17,320 175.58 0.0744
2024-08-13 2024-06-30 13F MARTIN MARIETTA MATLS COM 573284106 11,602 7,805 205.56 6,286 181.97 0.0338
2024-05-14 2024-03-31 13F MARTIN MARIETTA MATLS COM 573284106 3,797 2,048 117.10 2,229 155.62 0.0240
2024-02-13 2023-12-31 13F MARTIN MARIETTA MATLS COM 573284106 1,749 1,167 200.52 873 266.39 0.0100
2023-11-14 2023-09-30 13F MARTIN MARIETTA MATLS COM 573284106 582 582 239 0.0039
2021-11-15 2021-09-30 13F MARTIN MARIETTA MATLS COM 573284106 0 -1,555 -100.00 0 -100.00
2021-08-10 2021-06-30 13F MARTIN MARIETTA MATLS COM 573284106 1,555 0 0.00 547 4.79 0.0112
2021-05-17 2021-03-31 13F MARTIN MARIETTA MATLS COM 573284106 1,555 -2,701 -63.46 522 -56.82 0.0133
2021-02-12 2020-12-31 13F MARTIN MARIETTA MATLS COM 573284106 4,256 -975 -18.64 1,209 -1.79 0.0391
2020-11-13 2020-09-30 13F MARTIN MARIETTA MATLS COM 573284106 5,231 -1,690 -24.42 1,231 -13.92 0.0657
2020-08-13 2020-06-30 13F MARTIN MARIETTA MATLS COM 573284106 6,921 1,345 24.12 1,430 35.55 0.0908
2020-05-14 2020-03-31 13F MARTIN MARIETTA MATLS COM 573284106 5,576 690 14.12 1,055 -22.77 0.0904
2020-02-12 2019-12-31 13F MARTIN MARIETTA MATLS COM 573284106 4,886 -2,215 -31.19 1,366 -29.80 0.0761
2019-11-08 2019-09-30 13F MARTIN MARIETTA MATLS COM 573284106 7,101 -1,830 -20.49 1,946 -5.30 0.0943
2019-08-14 2019-06-30 13F MARTIN MARIETTA MATLS COM 573284106 8,931 0 0.00 2,055 14.36 0.1092
2019-05-14 2019-03-31 13F MARTIN MARIETTA MATLS COM 573284106 8,931 -50 -0.56 1,797 16.46 0.0982
2019-02-13 2018-12-31 13F MARTIN MARIETTA MATLS COM 573284106 8,981 8,981 1,543 0.0874
2018-05-14 2018-03-31 13F MARTIN MARIETTA MATLS COM 573284106 0 -1,159 -100.00 0 -100.00
2018-02-13 2017-12-31 13F MARTIN MARIETTA MATLS COM 573284106 1,159 -17,276 -93.71 256 -93.27 0.0171
2017-11-14 2017-09-30 13F MARTIN MARIETTA M COM 573284106 18,435 2,429 15.18 3,802 6.71 0.0130
2017-08-14 2017-06-30 13F MARTIN MARIETTA MATLS COM 573284106 16,006 -597 -3.60 3,563 -1.66 0.0117
2017-05-11 2017-03-31 13F MARTIN MARIETTA MATLS COM 573284106 16,603 -10,064 -37.74 3,623 -38.66 0.0111
2017-03-02 2016-12-31 13F/A-1 MARTIN MARIETTA MATLS COM 573284106 26,667 1,665 6.66 5,906 31.92 0.0190
2017-02-13 2016-12-31 13F MARTIN MARIETTA MATLS COM 573284106 26,667 5,906
2016-11-10 2016-09-30 13F MARTIN MARIETTA MATLS COM 573284106 25,002 12,791 104.75 4,477 91.00 0.0146
2016-08-10 2016-06-30 13F MARTIN MARIETTA MATLS COM 573284106 12,211 3,177 35.17 2,344 62.66 0.0090
2016-05-12 2016-03-31 13F MARTIN MARIETTA MATLS COM 573284106 9,034 107 1.20 1,441 18.21 0.0068
2016-02-11 2015-12-31 13F MARTIN MARIETTA MATLS COM 573284106 8,927 -1,822 -16.95 1,219 -25.35 0.0057
2015-11-13 2015-09-30 13F MARTIN MARIETTA MATLS COM 573284106 10,749 0 0.00 1,633 7.43 0.0081
2015-08-12 2015-06-30 13F MARTIN MARIETTA MATLS COM 573284106 10,749 1,846 20.73 1,520 22.19 0.0071
2015-05-12 2015-03-31 13F MARTIN MARIETTA MATLS COM 573284106 8,903 455 5.39 1,244 36.55 0.0055
2015-02-09 2014-12-31 13F MARTIN MARIETTA MATLS COM 573284106 8,448 0 0.00 911 -16.35 0.0039
2014-11-13 2014-09-30 13F MARTIN MARIETTA MATLS COM 573284106 8,448 -13,568 -61.63 1,089 -62.54 0.0046
2014-08-12 2014-06-30 13F MARTIN MARIETTA M COM 573284106 22,016 -213,709 -90.66 2,907 -90.39 0.0123
2014-05-12 2014-03-31 13F MARTIN MARIETTA MATLS COM 573284106 235,725 11,004 4.90 30,255 34.71 0.1218
2014-02-11 2013-12-31 13F MARTIN MARIETTA MATLS COM 573284106 224,721 -1,335 -0.59 22,459 1.20 0.0928
2013-11-13 2013-09-30 13F MARTIN MARIETTA MATLS COM 573284106 226,056 25,200 12.55 22,192 0.0972
2013-08-14 2013-06-30 13F MARTIN MARIETTA MATLS COM 573284106 200,856 200,856 0
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.