Martin Marietta Materials, Inc.
MX ˙ BMV ˙ US5732841060
SecurityMX:MLM / Martin Marietta Materials, Inc.
InstitutionVerition Fund Management LLC
Latest Disclosed Ownership8,733 shares
Latest Disclosed Value $ 5,140,942
Verition Fund Management LLC reports 45.58% decrease in ownership of MLM / Martin Marietta Materials, Inc.

On May 15, 2026 - Verition Fund Management LLC filed a 13F-HR form disclosing ownership of 8,733 shares of Martin Marietta Materials, Inc. (MX:MLM) valued at $5,140,942 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 16,046 shares of Martin Marietta Materials, Inc.. This represents a change in shares of -45.58% 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 8,733 -7,313 -45.58 5,141 -48.55 0.0333
2026-02-13 2025-12-31 13F MARTIN MARIETTA MATLS COM 573284106 16,046 -2,560 -13.76 9,991 -14.80 0.0392
2025-11-14 2025-09-30 13F MARTIN MARIETTA MATLS COM 573284106 18,606 4,087 28.15 11,727 47.13 0.0484
2025-08-14 2025-06-30 13F MARTIN MARIETTA MATLS COM 573284106 14,519 520 3.71 7,970 19.08 0.0355
2025-05-15 2025-03-31 13F MARTIN MARIETTA MATLS COM 573284106 13,999 -19,032 -57.62 6,693 -60.77 0.0312
2025-02-14 2024-12-31 13F MARTIN MARIETTA MATLS COM 573284106 33,031 25,219 322.82 17,061 305.80 0.0675
2024-11-14 2024-09-30 13F MARTIN MARIETTA MATLS COM 573284106 7,812 5,029 180.70 4,205 178.96 0.0212
2024-08-14 2024-06-30 13F MARTIN MARIETTA MATLS COM 573284106 2,783 -4,568 -62.14 1,508 -66.61 0.0082
2024-05-14 2024-03-31 13F MARTIN MARIETTA MATLS COM 573284106 7,351 -14,349 -66.12 4,513 -58.31 0.0309
2024-02-14 2023-12-31 13F MARTIN MARIETTA MATLS COM 573284106 21,700 4,001 22.61 10,826 49.02 0.0847
2023-11-14 2023-09-30 13F MARTIN MARIETTA MATLS COM 573284106 17,699 -11,482 -39.35 7,265 -46.07 0.0848
2023-08-14 2023-06-30 13F MARTIN MARIETTA MATLS COM 573284106 29,181 7,556 34.94 13,473 75.46 0.1797
2023-05-15 2023-03-31 13F MARTIN MARIETTA MATLS COM 573284106 21,625 18,941 705.70 7,678 746.53 0.1062
2023-02-14 2022-12-31 13F MARTIN MARIETTA MATLS COM 573284106 2,684 478 21.67 907 27.57 0.0142
2023-01-18 2022-09-30 13F/A-1 MARTIN MARIETTA MATLS COM 573284106 2,206 -1,710 -43.67 711 -39.33 0.0080
2022-11-14 2022-09-30 13F MARTIN MARIETTA MATLS COM 573284106 2,206 -1,710 711 0.0081
2022-08-30 2022-06-30 13F/A-1 MARTIN MARIETTA MATLS COM 573284106 3,916 1,367 53.63 1,172 19.47 0.0232
2022-08-15 2022-06-30 13F MARTIN MARIETTA MATLS COM 573284106 3,916 1,367 1,172 0.0198
2022-06-02 2022-03-31 13F/A-1 MARTIN MARIETTA MATLS COM 573284106 2,549 2,549 981 0.0118
2022-05-13 2022-03-31 13F MARTIN MARIETTA MATLS COM 573284106 2,549 2,549 981 0.0112
2022-05-03 2021-12-31 13F/A-1 MARTIN MARIETTA MATLS COM 573284106 0 -3,731 -100.00 0 -100.00
2022-02-14 2021-12-31 13F MARTIN MARIETTA MATLS COM 573284106 0 -3,731 0
2021-11-15 2021-09-30 13F MARTIN MARIETTA MATLS COM 573284106 3,731 -1,124 -23.15 1,275 -25.35 0.0110
2021-08-16 2021-06-30 13F MARTIN MARIETTA MATLS COM 573284106 4,855 921 23.41 1,708 29.30 0.0155
2021-05-18 2021-03-31 13F MARTIN MARIETTA MATLS COM 573284106 3,934 3,934 1,321 0.0149
2019-11-14 2019-09-30 13F MARTIN MARIETTA MATLS COM 573284106 0 -1,631 -100.00 0 -100.00
2019-08-14 2019-06-30 13F MARTIN MARIETTA MATLS COM 573284106 1,631 1,631 375 0.0105
2019-05-15 2019-03-31 13F MARTIN MARIETTA MATLS COM 573284106 0 -5,829 -100.00 0 -100.00
2019-02-14 2018-12-31 13F MARTIN MARIETTA MATLS COM 573284106 5,829 4,142 245.52 1,002 226.38 0.0719
2018-11-14 2018-09-30 13F MARTIN MARIETTA MATLS COM 573284106 1,687 1,687 307 0.0110
2018-05-15 2018-03-31 13F MARTIN MARIETTA MATLS COM 573284106 0 -10,000 -100.00 0 -100.00
2018-02-14 2017-12-31 13F MARTIN MARIETTA MATLS COM 573284106 10,000 -1,747 -14.87 2,210 -8.79 0.2041
2017-11-14 2017-09-30 13F MARTIN MARIETTA MATLS COM 573284106 11,747 6,732 134.24 2,423 117.11 0.1951
2017-08-15 2017-06-30 13F MARTIN MARIETTA MATLS COM 573284106 5,015 1,324 35.87 1,116 38.46 0.1084
2017-05-12 2017-03-31 13F MARTIN MARIETTA MATLS COM 573284106 3,691 2,315 168.24 806 164.26 0.0751
2017-02-14 2016-12-31 13F MARTIN MARIETTA MATLS COM 573284106 1,376 1,376 0.00 305 0.0263
2015-08-14 2015-06-30 13F MARTIN MARIETTA MATLS COM 573284106 0 -2,474 -100.00 0 -100.00
2015-05-15 2015-03-31 13F MARTIN MARIETTA MATLS COM 573284106 2,474 2,474 0.00 346 0.0402
2015-02-13 2014-12-31 13F MARTIN MARIETTA MATLS COM 573284106 0 -2,441 -100.00 0 -100.00
2014-11-14 2014-09-30 13F MARTIN MARIETTA MATLS COM 573284106 2,441 -418 -14.62 315 -16.67 0.0444
2014-08-14 2014-06-30 13F MARTIN MARIETTA MATLS COM 573284106 2,859 2,859 -50.91 378 -34.03 0.0404
2013-11-14 2013-09-30 13F MARTIN MARIETTA MATLS COM 573284106 0 -5,824 -100.00 0 -100.00
2013-08-12 2013-06-30 13F MARTIN MARIETTA MATLS COM 573284106 5,824 5,824 573 0.1051
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.