Martin Marietta Materials, Inc.
MX ˙ BMV ˙ US5732841060
SecurityMX:MLM / Martin Marietta Materials, Inc.
InstitutionAmeriprise Financial Inc
Latest Disclosed Ownership107,571 shares
Latest Disclosed Value $ 63,326,740
Ameriprise Financial Inc reports 11.07% decrease in ownership of MLM / Martin Marietta Materials, Inc.

On May 15, 2026 - Ameriprise Financial Inc filed a 13F-HR form disclosing ownership of 107,571 shares of Martin Marietta Materials, Inc. (MX:MLM) valued at $63,326,740 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 120,968 shares of Martin Marietta Materials, Inc.. This represents a change in shares of -11.07% 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 MATERIALS COM 573284106 107,571 -13,397 -11.07 63,327 -15.93 0.0027
2026-02-17 2025-12-31 13F MARTIN MARIETTA MATERIALS COM 573284106 120,968 -11,142 -8.43 75,322 -9.61 0.0170
2025-11-14 2025-09-30 13F MARTIN MARIETTA MATERIALS COM 573284106 132,110 -2,792 -2.07 83,330 12.52 0.0191
2025-08-14 2025-06-30 13F MARTIN MARIETTA MATERIALS COM 573284106 134,902 -7,404 -5.20 74,056 8.84 0.0183
2025-05-14 2025-03-31 13F MARTIN MARIETTA MATERIALS COM 573284106 142,306 16,752 13.34 68,042 4.92 0.0184
2025-02-14 2024-12-31 13F MARTIN MARIETTA MATERIALS COM 573284106 125,554 3,820 3.14 64,849 -1.03 0.0166
2024-11-14 2024-09-30 13F MARTIN MARIETTA MATERIALS COM 573284106 121,734 -844 -0.69 65,523 -1.34 0.0168
2024-08-14 2024-06-30 13F MARTIN MARIETTA MATERIALS COM 573284106 122,578 -11,832 -8.80 66,413 -19.52 0.0180
2024-05-15 2024-03-31 13F MARTIN MARIETTA MATERIALS COM 573284106 134,410 19,344 16.81 82,518 43.74 0.0227
2024-02-14 2023-12-31 13F MARTIN MARIETTA MATERIALS COM 573284106 115,066 -4,416 -3.70 57,407 17.05 0.0172
2023-11-14 2023-09-30 13F MARTIN MARIETTA MATERIALS COM 573284106 119,482 48 0.04 49,044 -11.06 0.0161
2023-08-14 2023-06-30 13F MARTIN MARIETTA MATERIALS COM 573284106 119,434 -1,567 -1.30 55,142 28.35 0.0173
2023-05-22 2023-03-31 13F/A-1 MARTIN MARIETTA MATERIALS COM 573284106 121,001 -3,019 -2.43 42,964 2.50 0.0141
2023-05-15 2023-03-31 13F MARTEN TRANSPORT COM 573284106 121,001 -3,019 42,964 0.0026
2023-02-14 2022-12-31 13F MARTIN MARIETTA MATERIALS COM 573284106 124,020 -2,043 -1.62 41,915 2.14 0.0144
2022-11-14 2022-09-30 13F MARTIN MARIETTA MATERIALS COM 573284106 126,063 -2,939 -2.28 41,037 7.45 0.0152
2022-08-15 2022-06-30 13F MARTIN MARIETTA MATERIALS COM 573284106 129,002 36,402 39.31 38,193 11.82 0.0133
2022-05-16 2022-03-31 13F MARTIN MARIETTA MATERIALS COM 573284106 92,600 4,472 5.07 34,156 -7.08 0.0101
2022-02-14 2021-12-31 13F MARTIN MARIETTA MATERIALS COM 573284106 88,128 31,470 55.54 36,760 89.90 0.0102
2021-11-15 2021-09-30 13F MARTIN MARIETTA MATERIALS COM 573284106 56,658 -318 -0.56 19,358 -3.42 0.0062
2021-08-16 2021-06-30 13F MARTIN MARIETTA MATERIALS COM 573284106 56,976 -70,935 -55.46 20,044 -53.33 0.0062
2021-05-17 2021-03-31 13F MARTIN MARIETTA MATERIALS COM 573284106 127,911 -84,393 -39.75 42,952 -28.74 0.0143
2021-02-12 2020-12-31 13F MARTIN MARIETTA MATERIALS COM 573284106 212,304 49,130 30.11 60,273 56.94 0.0214
2020-11-16 2020-09-30 13F MARTIN MARIETTA MATERIALS COM 573284106 163,174 103,199 172.07 38,405 206.28 0.0156
2020-08-14 2020-06-30 13F MARTIN MARIETTA MATERIALS COM 573284106 59,975 1,950 3.36 12,539 14.19 0.0054
2020-05-15 2020-03-31 13F MARTIN MARIETTA MATERIALS COM 573284106 58,025 6,344 12.28 10,981 -24.02 0.0058
2020-02-14 2019-12-31 13F MARTIN MARIETTA MATERIALS COM 573284106 51,681 -902 -1.72 14,452 0.28 0.0060
2019-11-14 2019-09-30 13F MARTIN MARIETTA MATERIALS COM 573284106 52,583 239 0.46 14,411 19.64 0.0065
2019-08-14 2019-06-30 13F MARTIN MARIETTA MATERIALS COM 573284106 52,344 88 0.17 12,045 14.58 0.0054
2019-05-15 2019-03-31 13F MARTIN MARIETTA MATERIALS COM 573284106 52,256 -163,491 -75.78 10,512 -71.65 0.0048
2019-02-14 2018-12-31 13F MARTIN MARIETTA MATERIALS COM 573284106 215,747 33,208 18.19 37,082 11.65 0.0185
2018-11-14 2018-09-30 13F MARTIN MARIETTA MATL COM 573284106 182,539 -8,798 -4.60 33,212 -22.27 0.0116
2018-08-14 2018-06-30 13F MARTIN MARIETTA MATERIALS COM 573284106 191,337 -4,840 -2.47 42,730 5.07 0.0189
2018-05-14 2018-03-31 13F MARTIN MARIETTA MATERIALS COM 573284106 196,177 -134,893 -40.74 40,667 -44.43 0.0184
2018-02-12 2017-12-31 13F MARTIN MARIETTA MATERIALS COM 573284106 331,070 -4,652 -1.39 73,176 5.69 0.0334
2017-11-07 2017-09-30 13F MARTIN MARIETTA MATERIALS COM 573284106 335,722 176,968 111.47 69,236 95.95 0.0330
2017-08-10 2017-06-30 13F MARTIN MARIETTA MATERIALS COM 573284106 158,754 -70,833 -30.85 35,334 -29.49 0.0177
2017-05-05 2017-03-31 13F MARTIN MARIETTA MATERIALS COM 573284106 229,587 17,458 8.23 50,109 6.64 0.0259
2017-02-03 2016-12-31 13F MARTIN MARIETTA MATERIALS COM 573284106 212,129 84,742 66.52 46,991 105.96 0.0257
2016-11-08 2016-09-30 13F MARTIN MARIETTA MATERIALS COM 573284106 127,387 15,026 13.37 22,816 5.76 0.0128
2016-08-08 2016-06-30 13F MARTIN MARIETTA MATERIALS COM 573284106 112,361 5,504 5.15 21,574 26.57 0.0126
2016-05-12 2016-03-31 13F MARTIN MARIETTA MATERIALS COM 573284106 106,857 59,578 126.01 17,045 163.94 0.0102
2016-02-11 2015-12-31 13F MARTIN MARIETTA MATERIALS COM 573284106 47,279 1,106 2.40 6,458 -7.95 0.0038
2015-11-12 2015-09-30 13F MARTIN MARIETTA MATERIALS COM 573284106 46,173 1,993 4.51 7,016 12.24 0.0043
2015-08-13 2015-06-30 13F MARTIN MARIETTA MATERIALS COM 573284106 44,180 -52,332 -54.22 6,251 -53.67 0.0036
2015-05-14 2015-03-31 13F MARTIN MARIETTA MATERIALS COM 573284106 96,512 11,799 13.93 13,493 44.40 0.0077
2015-02-13 2014-12-31 13F MARTIN MARIETTA MATERIALS COM 573284106 84,713 40,603 92.05 9,344 64.30 0.0054
2014-11-14 2014-09-30 13F MARTIN MARIETTA MATERIALS COM 573284106 44,110 -90,408 -67.21 5,687 -67.98 0.0034
2014-08-13 2014-06-30 13F MARTIN MARIETTA MATERIALS COM 573284106 134,518 -30,422 -18.44 17,763 -16.09 0.0105
2014-05-14 2014-03-31 13F MARTIN MARIETTA MATERIALS COM 573284106 164,940 2,496 1.54 21,170 30.40 0.0127
2014-02-14 2013-12-31 13F MARTIN MARIETTA MATERIALS COM 573284106 162,444 1,672 1.04 16,235 2.86 0.0098
2013-11-14 2013-09-30 13F MARTIN MARIETTA MATERIALS COM 573284106 160,772 6,856 4.45 15,784 4.19 0.0104
2013-08-14 2013-06-30 13F MARTIN MARIETTA MATERIALS COM 573284106 153,916 153,916 15,149 0.0105
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.