Martin Marietta Materials, Inc.
MX ˙ BMV ˙ US5732841060
SecurityMX:MLM / Martin Marietta Materials, Inc.
InstitutionWPWealth LLP
Latest Disclosed Ownership637 shares
Latest Disclosed Value $ 374,989
WPWealth LLP ownership in MLM / Martin Marietta Materials, Inc.

On May 11, 2026 - WPWealth LLP filed a 13F-HR form disclosing ownership of 637 shares of Martin Marietta Materials, Inc. (MX:MLM) valued at $374,989 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 637 shares of Martin Marietta Materials, Inc.. This represents a change in shares of 0.00% 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-11 2026-03-31 13F MARTIN MARIETTA MATLS COM 573284106 637 0 0.00 375 -5.56 0.0573
2026-02-13 2025-12-31 13F MARTIN MARIETTA MATLS COM 573284106 637 0 0.00 397 -1.25 0.0621
2025-11-12 2025-09-30 13F MARTIN MARIETTA MATLS COM 573284106 637 -5 -0.78 401 13.92 0.0656
2025-08-11 2025-06-30 13F MARTIN MARIETTA MATLS COM 573284106 642 -7 -1.08 352 13.55 0.0636
2025-08-11 2025-03-31 13F MARTIN MARIETTA MATLS COM 573284106 649 -67 -9.36 310 -15.99 0.0613
2025-02-13 2024-12-31 13F MARTIN MARIETTA MATLS COM 573284106 716 82 12.93 370 8.21 0.0756
2024-11-13 2024-09-30 13F MARTIN MARIETTA MATLS COM 573284106 634 6 0.96 341 0.29 0.0707
2024-08-08 2024-06-30 13F MARTIN MARIETTA MATLS COM 573284106 628 1 0.16 340 -11.46 0.0822
2024-05-16 2024-03-31 13F MARTIN MARIETTA MATLS COM 573284106 627 -8 -1.26 385 21.52 0.0995
2024-02-09 2023-12-31 13F MARTIN MARIETTA MATLS COM 573284106 635 119 23.06 317 49.76 0.0980
2023-10-12 2023-09-30 13F MARTIN MARIETTA MATLS COM 573284106 516 1 0.19 212 -10.97 0.0810
2023-10-12 2023-06-30 13F MARTIN MARIETTA MATLS COM 573284106 515 515 238 0.1020
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.