Martin Marietta Materials, Inc.
MX ˙ BMV ˙ US5732841060
SecurityMX:MLM / Martin Marietta Materials, Inc.
InstitutionCWS Financial Advisors, LLC
Latest Disclosed Ownership719 shares
Latest Disclosed Value $ 423,261
CWS Financial Advisors, LLC ownership in MLM / Martin Marietta Materials, Inc.

On April 27, 2026 - CWS Financial Advisors, LLC filed a 13F-HR form disclosing ownership of 719 shares of Martin Marietta Materials, Inc. (MX:MLM) valued at $423,261 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 719 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.

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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 MATLS COM 573284106 719 0 0.00 423 -5.37 0.1085
2026-02-06 2025-12-31 13F MARTIN MARIETTA MATLS COM 573284106 719 0 0.00 448 -1.32 0.1215
2025-11-04 2025-09-30 13F MARTIN MARIETTA MATLS COM 573284106 719 0 0.00 453 14.97 0.1258
2025-08-08 2025-06-30 13F MARTIN MARIETTA MATLS COM 573284106 719 -71 -8.99 395 4.51 0.1148
2025-05-14 2025-03-31 13F MARTIN MARIETTA MATLS COM 573284106 790 0 0.00 378 -7.60 0.1193
2025-02-04 2024-12-31 13F MARTIN MARIETTA MATLS COM 573284106 790 71 9.87 408 5.43 0.1321
2024-11-14 2024-09-30 13F MARTIN MARIETTA MATLS COM 573284106 719 0 0.00 387 -0.51 0.1371
2024-07-31 2024-06-30 13F MARTIN MARIETTA MATLS COM 573284106 719 0 0.00 390 -11.79 0.1532
2024-05-01 2024-03-31 13F MARTIN MARIETTA MATLS COM 573284106 719 -186 -20.55 441 -2.22 0.1808
2024-02-08 2023-12-31 13F MARTIN MARIETTA MATLS COM 573284106 905 180 24.83 452 51.85 0.1694
2023-11-14 2023-09-30 13F MARTIN MARIETTA MATLS COM 573284106 725 0 0.00 298 -11.08 0.1193
2023-08-14 2023-06-30 13F MARTIN MARIETTA MATLS COM 573284106 725 0 0.00 335 29.96 0.1269
2023-05-09 2023-03-31 13F MARTIN MARIETTA MATLS COM 573284106 725 6 0.83 257 6.64 0.1024
2023-02-10 2022-12-31 13F MARTIN MARIETTA MATLS COM 573284106 719 -6 -0.83 241 2.99 0.1039
2022-11-09 2022-09-30 13F MARTIN MARIETTA MATLS COM 573284106 725 0 0.00 234 7.83 0.1120
2022-08-08 2022-06-30 13F MARTIN MARIETTA MATLS COM 573284106 725 0 0.00 217 -22.22 0.0992
2022-05-03 2022-03-31 13F MARTIN MARIETTA MATLS COM 573284106 725 0 0.00 279 -12.54 0.1054
2022-02-15 2021-12-31 13F MARTIN MARIETTA MATLS COM 573284106 725 6 0.83 319 26.09 0.1125
2021-08-06 2021-06-30 13F MARTIN MARIETTA MATLS COM 573284106 719 0 0.00 253 4.98 0.1009
2021-05-13 2021-03-31 13F MARTIN MARIETTA MATLS COM 573284106 719 0 0.00 241 18.14 0.1039
2021-02-12 2020-12-31 13F MARTIN MARIETTA MATLS COM 573284106 719 719 204 0.1186
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.