Martin Marietta Materials, Inc.
MX ˙ BMV ˙ US5732841060
SecurityMX:MLM / Martin Marietta Materials, Inc.
InstitutionSRS Capital Advisors, Inc.
Latest Disclosed Ownership368 shares
Latest Disclosed Value $ 216,438
SRS Capital Advisors, Inc. reports 60.70% increase in ownership of MLM / Martin Marietta Materials, Inc.

On May 13, 2026 - SRS Capital Advisors, Inc. filed a 13F-HR form disclosing ownership of 368 shares of Martin Marietta Materials, Inc. (MX:MLM) valued at $216,438 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 229 shares of Martin Marietta Materials, Inc.. This represents a change in shares of 60.70% 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)
2026-05-13 2026-03-31 13F MARTIN MARIETTA MATLS COM 573284106 368 139 60.70 216 52.11 0.0061
2026-02-13 2025-12-31 13F MARTIN MARIETTA MATLS COM 573284106 229 -1,170 -83.63 142 -83.90 0.0041
2025-11-14 2025-09-30 13F MARTIN MARIETTA MATLS COM 573284106 1,399 980 233.89 882 283.48 0.0127
2025-08-12 2025-06-30 13F MARTIN MARIETTA MATLS COM 573284106 419 52 14.17 231 31.43 0.0106
2025-05-15 2025-03-31 13F MARTIN MARIETTA MATLS COM 573284106 367 -260 -41.47 175 -45.99 0.0113
2025-02-05 2024-12-31 13F MARTIN MARIETTA MATLS COM 573284106 627 -232 -27.01 324 -29.87 0.0204
2024-11-06 2024-09-30 13F MARTIN MARIETTA MATLS COM 573284106 859 2 0.23 462 -0.43 0.0413
2024-08-06 2024-06-30 13F MARTIN MARIETTA MATLS COM 573284106 857 187 27.91 464 12.90 0.0453
2024-05-14 2024-03-31 13F MARTIN MARIETTA MATLS COM 573284106 670 -19 -2.76 412 19.83 0.0434
2024-02-06 2023-12-31 13F MARTIN MARIETTA MATLS COM 573284106 689 -76 -9.93 344 9.24 0.0383
2023-11-14 2023-09-30 13F MARTIN MARIETTA MATLS COM 573284106 765 67 9.60 314 -2.48 0.0391
2023-08-14 2023-06-30 13F MARTIN MARIETTA MATLS COM 573284106 698 44 6.73 322 38.79 0.0411
2023-05-16 2023-03-31 13F MARTIN MARIETTA MATLS COM 573284106 654 11 1.71 232 6.91 0.0307
2023-02-24 2022-12-31 13F MARTIN MARIETTA MATLS COM 573284106 643 16 2.55 217 7.43 0.0301
2022-11-03 2022-09-30 13F MARTIN MARIETTA MATLS COM 573284106 627 21 3.47 202 11.60 0.0319
2022-08-22 2022-06-30 13F MARTIN MARIETTA MATLS COM 573284106 606 7 1.17 181 -21.65 0.0274
2022-05-12 2022-03-31 13F MARTIN MARIETTA MATLS COM 573284106 599 -73 -10.86 231 -21.96 0.0308
2022-02-08 2021-12-31 13F MARTIN MARIETTA MATLS COM 573284106 672 11 1.66 296 30.97 0.0375
2021-11-05 2021-09-30 13F MARTIN MARIETTA MATLS COM 573284106 661 -137 -17.17 226 -19.57 0.0309
2021-08-02 2021-06-30 13F MARTIN MARIETTA MATLS COM 573284106 798 -91 -10.24 281 11.51 0.0383
2021-02-03 2020-12-31 13F MARTIN MARIETTA MATLS COM 573284106 889 41 4.83 252 26.63 0.0373
2020-11-12 2020-09-30 13F MARTIN MARIETTA MATLS COM 573284106 848 178 26.57 199 44.20 0.0336
2020-08-06 2020-06-30 13F MARTIN MARIETTA MATLS COM 573284106 670 47 7.54 138 16.95 0.0246
2020-05-13 2020-03-31 13F MARTIN MARIETTA MATLS COM 573284106 623 -18 -2.81 118 -34.08 0.0272
2020-02-07 2019-12-31 13F MARTIN MARIETTA MATLS COM 573284106 641 0 0.00 179 1.70 0.0514
2019-11-01 2019-09-30 13F MARTIN MARIETTA MATLS COM 573284106 641 1 0.16 176 19.73 0.0531
2019-08-08 2019-06-30 13F MARTIN MARIETTA MATLS COM 573284106 640 -20 -3.03 147 30.09 0.0489
2019-02-06 2018-12-31 13F MARTIN MARIETTA MATLS COM 573284106 660 0 0.00 113 -5.83 0.0449
2018-11-05 2018-09-30 13F MARTIN MARIETTA MATLS COM 573284106 660 -33 -4.76 120 -22.08 0.0484
2018-08-21 2018-06-30 13F MARTIN MARIETTA MATLS INC COM COM 573284106 693 -33 -4.55 154 2.67 0.0676
2018-05-14 2018-03-31 13F MARTIN MARIETTA MATLS INC COM COM 573284106 726 -16 -2.16 150 -8.54 0.0779
2018-02-15 2017-12-31 13F MARTIN MARIETTA MATLS INC COM COM 573284106 742 384 107.26 164 124.66 0.0711
2017-11-15 2017-09-30 13F MARTIN MARIETTA MATLS INC COM COM 573284106 358 -1 -0.28 73 -8.75 0.0351
2017-08-14 2017-06-30 13F MARTIN MARIETTA MATLS INC COM COM 573284106 359 1 0.28 80 2.56 0.0383
2017-05-11 2017-03-31 13F MARTIN MARIETTA MATLS INC COM COM 573284106 358 0 0.00 78 -1.27 0.0375
2017-02-14 2016-12-31 13F MARTIN MARIETTA MATLS INC COM COM 573284106 358 358 79 0.0395
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.