마틴 마리에타 머티리얼즈, Inc.
DE ˙ DB ˙ US5732841060
€499.80 ↑4.40 (0.89%)
2026-06-04
주가
SecurityDE:MMX / Martin Marietta Materials, Inc.
InstitutionEthic Inc.
Latest Disclosed Ownership12,202 shares
Latest Disclosed Value $ 7,183,306
Ethic Inc. reports 13.57% increase in ownership of MMX / Martin Marietta Materials, Inc.

On April 27, 2026 - Ethic Inc. filed a 13F-HR form disclosing ownership of 12,202 shares of Martin Marietta Materials, Inc. (DE:MMX) valued at $6,130,285 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 3, 2026 disclosing 10,744 shares of Martin Marietta Materials, Inc.. This represents a change in shares of 13.57% during the quarter. The current value of the position is $6,098,560 USD.

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)
2026-04-27 2026-03-31 13F MARTIN MARIETTA MATERIALS COM 573284106 12,202 1,458 13.57 7,183 7.37 0.1125
2026-02-03 2025-12-31 13F MARTIN MARIETTA MATERIALS COM 573284106 10,744 2,889 36.78 6,690 35.12 0.1029
2025-10-17 2025-09-30 13F MARTIN MARIETTA MATERIALS COM 573284106 7,855 235 3.08 4,951 18.13 0.0815
2025-07-30 2025-06-30 13F MARTIN MARIETTA MATERIALS COM 573284106 7,620 1,241 19.45 4,191 35.59 0.0751
2025-05-13 2025-03-31 13F MARTIN MARIETTA MATERIALS COM 573284106 6,379 118 1.88 3,091 -4.39 0.0626
2025-02-14 2024-12-31 13F MARTIN MARIETTA MATERIALS COM 573284106 6,261 -1,655 -20.91 3,234 -33.48 0.0653
2024-11-13 2024-09-30 13F MARTIN MARIETTA MATLS COM 573284106 7,916 2,764 53.65 4,860 74.13 0.1228
2024-08-13 2024-06-30 13F MARTIN MARIETTA MATLS COM 573284106 5,152 -2,764 -34.92 2,792 -42.57 0.0655
2024-05-13 2024-03-31 13F MARTIN MARIETTA MATLS COM 573284106 7,916 952 13.67 4,860 39.90 0.1228
2024-02-14 2023-12-31 13F MARTIN MARIETTA MATLS COM 573284106 6,964 1,733 33.13 3,475 61.81 0.1028
2023-11-14 2023-09-30 13F MARTIN MARIETTA MATLS COM 573284106 5,231 750 16.74 2,147 3.82 0.0753
2023-08-14 2023-06-30 13F MARTIN MARIETTA MATLS COM 573284106 4,481 754 20.23 2,069 56.31 0.0767
2023-05-12 2023-03-31 13F MARTIN MARIETTA MATLS COM 573284106 3,727 1,158 45.08 1,323 52.42 0.0537
2023-02-14 2022-12-31 13F MARTIN MARIETTA MATLS COM 573284106 2,569 665 34.93 868 41.60 0.0469
2022-11-14 2022-09-30 13F MARTIN MARIETTA MATLS COM 573284106 1,904 263 16.03 613 24.85 0.0416
2022-08-10 2022-06-30 13F MARTIN MARIETTA MATLS COM 573284106 1,641 1,088 196.75 491 130.52 0.0342
2022-05-16 2022-03-31 13F MARTIN MARIETTA MATLS COM 573284106 553 -460 -45.41 213 -52.24 0.0147
2022-02-14 2021-12-31 13F MARTIN MARIETTA MATLS COM 573284106 1,013 140 16.04 446 49.66 0.0344
2021-11-15 2021-09-30 13F MARTIN MARIETTA MATLS COM 573284106 873 -430 -33.00 298 -34.93 0.0305
2021-08-10 2021-06-30 13F MARTIN MARIETTA MATLS COM 573284106 1,303 370 39.66 458 46.33 0.0555
2021-05-13 2021-03-31 13F MARTIN MARIETTA MATLS COM 573284106 933 933 313 0.0558
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.