Martin Marietta Materials, Inc.
MX ˙ BMV ˙ US5732841060
SecurityMX:MLM / Martin Marietta Materials, Inc.
InstitutionVictory Capital Management Inc
Latest Disclosed Ownership1,637,147 shares
Latest Disclosed Value $ 963,760,400
Victory Capital Management Inc reports 33.15% decrease in ownership of MLM / Martin Marietta Materials, Inc.

On May 15, 2026 - Victory Capital Management Inc filed a 13F-HR form disclosing ownership of 1,637,147 shares of Martin Marietta Materials, Inc. (MX:MLM) valued at $963,760,400 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 2,448,928 shares of Martin Marietta Materials, Inc.. This represents a change in shares of -33.15% 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 1,637,147 -811,781 -33.15 963,760 -36.80 0.4627
2026-02-13 2025-12-31 13F MARTIN MARIETTA MATLS COM 573284106 2,448,928 836,120 51.84 1,524,853 50.11 0.8605
2025-11-12 2025-09-30 13F MARTIN MARIETTA MATLS COM 573284106 1,612,808 -30,995 -1.89 1,015,840 11.61 0.5940
2025-08-13 2025-06-30 13F MARTIN MARIETTA MATLS COM 573284106 1,643,803 1,608,108 4,505.14 910,188 5,233.34 0.5870
2025-05-02 2025-03-31 13F MARTIN MARIETTA MATLS COM 573284106 35,695 2,670 8.08 17,067 0.05 0.0175
2025-02-06 2024-12-31 13F MARTIN MARIETTA MATLS COM 573284106 33,025 -3,006 -8.34 17,057 -12.05 0.0168
2024-11-05 2024-09-30 13F MARTIN MARIETTA MATLS COM 573284106 36,031 246 0.69 19,394 0.03 0.0187
2024-08-05 2024-06-30 13F MARTIN MARIETTA MATLS COM 573284106 35,785 1,637 4.79 19,388 -7.52 0.0194
2024-05-03 2024-03-31 13F MARTIN MARIETTA MATLS COM 573284106 34,148 -3,070 -8.25 20,965 12.90 0.0205
2024-02-05 2023-12-31 13F MARTIN MARIETTA MATLS COM 573284106 37,218 -756 -1.99 18,568 19.12 0.0195
2023-11-06 2023-09-30 13F MARTIN MARIETTA MATLS COM 573284106 37,974 478 1.27 15,588 -9.96 0.0179
2023-07-27 2023-06-30 13F MARTIN MARIETTA MATLS COM 573284106 37,496 7,893 26.66 17,312 64.71 0.0190
2023-05-02 2023-03-31 13F MARTIN MARIETTA MATLS COM 573284106 29,603 -1,701 -5.43 10,511 -0.65 0.0118
2023-04-25 2022-12-31 13F/A-3 MARTIN MARIETTA MATLS COM 573284106 31,304 4,290 15.88 10,580 21.58 0.0122
2023-03-10 2022-12-31 13F/A-2 MARTIN MARIETTA MATLS COM 573284106 31,304 4,290 10,580 0.0116
2023-02-10 2022-12-31 13F/A-1 MARTIN MARIETTA MATLS COM 573284106 31,304 4,290 10,580 0.0073
2023-02-09 2022-12-31 13F MARTIN MARIETTA MATLS COM 573284106 27,059 45 9,731 0.0066
2022-11-02 2022-09-30 13F MARTIN MARIETTA MATLS COM 573284106 27,014 -2,327 -7.93 8,701 -0.90 0.0102
2022-08-01 2022-06-30 13F MARTIN MARIETTA MATLS COM 573284106 29,341 -11,485 -28.13 8,780 -40.70 0.0100
2022-05-04 2022-03-31 13F MARTIN MARIETTA MATLS COM 573284106 40,826 1,863 4.78 14,806 -13.74 0.0148
2022-02-07 2021-12-31 13F MARTIN MARIETTA MATLS COM 573284106 38,963 248 0.64 17,164 29.76 0.0158
2021-11-02 2021-09-30 13F MARTIN MARIETTA MATLS COM 573284106 38,715 4,968 14.72 13,228 11.41 0.0130
2021-08-03 2021-06-30 13F MARTIN MARIETTA MATLS COM 573284106 33,747 -649 -1.89 11,873 2.79 0.0114
2021-05-04 2021-03-31 13F MARTIN MARIETTA MATLS COM 573284106 34,396 3,255 10.45 11,551 30.62 0.0118
2021-02-01 2020-12-31 13F MARTIN MARIETTA MATLS COM 573284106 31,141 -926 -2.89 8,843 17.17 0.0099
2020-11-09 2020-09-30 13F Martin Marietta Materials COM 573284106 32,067 -10,550 -24.76 7,547 -14.28 0.0097
2020-08-07 2020-06-30 13F MARTIN MARIETTA MATLS COM 573284106 42,617 -38,587 -47.52 8,804 -42.70 0.0119
2020-05-12 2020-03-31 13F/A-1 MARTIN MARIETTA MATLS COM 573284106 81,204 26,458 48.33 15,366 0.37 0.0258
2020-05-04 2020-03-31 13F MARTIN MARIETTA MATLS COM 573284106 81,204 26,458 15,366 16,816.5256
2020-02-06 2019-12-31 13F/A-1 MARTIN MARIETTA MATLS COM 573284106 54,746 -2,337 -4.09 15,309 -2.15 0.0186
2020-02-04 2019-12-31 13F MARTIN MARIETTA MATLS COM 573284106 82,580 25,497 21,785 26,113.4757
2019-11-12 2019-09-30 13F MARTIN MARIETTA MATLS COM 573284106 57,083 24,814 76.90 15,646 110.72 0.0201
2019-08-15 2019-06-30 13F MARTIN MARIETTA MATLS COM 573284106 32,269 15,392 91.20 7,425 118.70 0.0150
2019-05-03 2019-03-31 13F MARTIN MARIETTA MATLS Common Stock 573284106 16,877 -3,525 -17.28 3,395 -3.17 0.0077
2019-05-02 2018-12-31 13F/A-1 MARTIN MARIETTA MATLS COM 573284106 20,402 -88 -0.43 3,506 -5.95 0.0088
2019-02-05 2018-12-31 13F MARTIN MARIETTA MATLS COM 573284106 20,402 -88 3,506
2018-11-01 2018-09-30 13F MARTIN MARIETTA MATLS COM 573284106 20,490 -4,756 -18.84 3,728 -33.88 0.0077
2018-08-02 2018-06-30 13F MARTIN MARIETTA MATLS COM 573284106 25,246 1,417 5.95 5,638 14.13 0.0120
2018-05-04 2018-03-31 13F MARTIN MARIETTA MATLS COM 573284106 23,829 3,086 14.88 4,940 7.74 0.0108
2018-02-01 2017-12-31 13F MARTIN MARIETTA MATLS COM 573284106 20,743 608 3.02 4,585 10.40 0.0096
2017-10-27 2017-09-30 13F MARTIN MARIETTA MATLS COM 573284106 20,135 1,982 10.92 4,153 2.77 0.0093
2017-08-07 2017-06-30 13F MARTIN MARIETTA MATLS COM 573284106 18,153 2,708 17.53 4,041 19.88 0.0095
2017-05-10 2017-03-31 13F MARTIN MARIETTA MATLS COM 573284106 15,445 713 4.84 3,371 3.28 0.0080
2017-02-09 2016-12-31 13F Martin Marietta Materials COM 573284106 14,732 2,540 20.83 3,264 49.45 0.0082
2016-11-02 2016-09-30 13F MARTIN MARIETTA MATLS COM 573284106 12,192 7,650 168.43 2,184 150.46 0.0061
2016-08-09 2016-06-30 13F MARTIN MARIETTA MATLS COM 573284106 4,542 144 3.27 872 24.22 0.0035
2016-05-17 2016-03-31 13F/A-2 MARTIN MARIETTA MATLS COM 573284106 4,398 411 10.31 702 28.81 0.0029
2016-05-12 2016-03-31 13F/A-1 MARTIN MARIETTA MATLS COM 573284106 4,398 0 702 0.0029
2016-05-12 2016-03-31 13F MARTIN MARIETTA MATLS COM 573284106 4,398 702
2016-02-10 2015-12-31 13F MARTIN MARIETTA MATLS COM 573284106 3,987 963 31.85 545 18.74 0.0023
2015-11-06 2015-09-30 13F MARTIN MARIETTA MATLS COM 573284106 3,024 3,024 459 0.0019
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.