Martin Marietta Materials, Inc.
US ˙ NYSE ˙ US5732841060

SecurityMLM / Martin Marietta Materials, Inc.
InstitutionCreative Planning
Latest Disclosed Ownership24,025 shares
Latest Disclosed Value $ 14,143,162
Creative Planning ownership in MLM / Martin Marietta Materials, Inc.

On May 12, 2026 - Creative Planning filed a 13F-HR form disclosing ownership of 24,025 shares of Martin Marietta Materials, Inc. (US:MLM) valued at $14,143,037 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 23,136 shares of Martin Marietta Materials, Inc.. This represents a change in shares of 3.84% during the quarter. The current value of the position is $14,010,179 USD.

Creative Planning has a history of taking positions in derivatives of the underlying security (MLM) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

MLM / Martin Marietta Materials, Inc. Historical Put/Call Ratio
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)
2026-05-12 2026-03-31 13F MARTIN MARIETTA MATLS COM 573284106 24,025 889 3.84 14,143 -1.82 0.0094
2026-02-17 2025-12-31 13F MARTIN MARIETTA MATLS COM 573284106 23,136 249 1.09 14,406 -0.14 0.0103
2025-11-14 2025-09-30 13F MARTIN MARIETTA MATLS COM 573284106 22,887 2,121 10.21 14,425 26.55 0.0110
2025-08-08 2025-06-30 13F MARTIN MARIETTA MATLS COM 573284106 20,766 3,033 17.10 11,399 34.45 0.0097
2025-05-15 2025-03-31 13F MARTIN MARIETTA MATLS COM 573284106 17,733 1,340 8.17 8,479 0.13 0.0080
2025-02-14 2024-12-31 13F MARTIN MARIETTA MATLS COM 573284106 16,393 626 3.97 8,467 -0.22 0.0082
2024-10-11 2024-09-30 13F MARTIN MARIETTA MATLS COM 573284106 15,767 -117 -0.74 8,487 -1.38 0.0084
2024-08-15 2024-06-30 13F MARTIN MARIETTA MATLS COM 573284106 15,884 -264 -1.63 8,606 -13.19 0.0092
2024-05-13 2024-03-31 13F MARTIN MARIETTA MATLS COM 573284106 16,148 2,243 16.13 9,914 42.90 0.0110
2024-02-14 2023-12-31 13F MARTIN MARIETTA MATLS COM 573284106 13,905 4,656 50.34 6,937 82.74 0.0129
2023-11-16 2023-09-30 13F MARTIN MARIETTA MATLS COM 573284106 9,249 1,396 17.78 3,796 4.72 0.0051
2023-07-21 2023-06-30 13F MARTIN MARIETTA MATLS COM 573284106 7,853 1,353 20.82 3,626 57.13 0.0048
2023-05-15 2023-03-31 13F MARTIN MARIETTA MATLS COM 573284106 6,500 300 4.84 2,308 10.12 0.0033
2023-02-10 2022-12-31 13F MARTIN MARIETTA MATLS COM 573284106 6,200 713 12.99 2,095 18.56 0.0032
2022-11-03 2022-09-30 13F MARTIN MARIETTA MATLS COM 573284106 5,487 687 14.31 1,767 23.05 0.0031
2022-08-15 2022-06-30 13F MARTIN MARIETTA MATLS COM 573284106 4,800 208 4.53 1,436 -18.78 0.0024
2022-05-16 2022-03-31 13F MARTIN MARIETTA MATLS COM 573284106 4,592 535 13.19 1,768 -1.06 0.0027
2022-02-11 2021-12-31 13F MARTIN MARIETTA MATLS COM 573284106 4,057 87 2.19 1,787 31.69 0.0029
2021-11-10 2021-09-30 13F MARTIN MARIETTA MATLS COM 573284106 3,970 157 4.12 1,357 1.12 0.0024
2021-08-04 2021-06-30 13F MARTIN MARIETTA MATLS COM 573284106 3,813 -1,123 -22.75 1,342 -19.01 0.0024
2021-04-30 2021-03-31 13F CreativePlanning COM 573284106 4,936 255 5.45 1,657 24.68 0.0033
2021-01-29 2020-12-31 13F MARTIN MARIETTA MATLS COM 573284106 4,681 -143 -2.96 1,329 17.09 0.0029
2020-11-05 2020-09-30 13F MARTIN MARIETTA MATLS COM 573284106 4,824 -156 -3.13 1,135 10.30 0.0030
2020-07-23 2020-06-30 13F MARTIN MARIETTA MATLS COM 573284106 4,980 2,619 110.93 1,029 130.20 0.0030
2020-05-05 2020-03-31 13F MARTIN MARIETTA MATLS COM 573284106 2,361 91 4.01 447 -29.61 0.0016
2020-01-30 2019-12-31 13F MARTIN MARIETTA MATLS COM 573284106 2,270 148 6.97 635 9.11 0.0019
2019-11-01 2019-09-30 13F MARTIN MARIETTA MATLS COM 573284106 2,122 -8,736 -80.46 582 -76.71 0.0019
2019-07-26 2019-06-30 13F MARTIN MARIETTA MATLS COM 573284106 10,858 -14,235 -56.73 2,499 -50.50 0.0084
2019-04-24 2019-03-31 13F MARTIN MARIETTA MATLS COM 573284106 25,093 83 0.33 5,048 17.42 0.0182
2019-02-12 2018-12-31 13F/A-1 MARTIN MARIETTA MATLS COM 573284106 25,010 -1,166 -4.45 4,299 -9.74 0.0176
2019-02-01 2018-12-31 13F MARTIN MARIETTA MATLS COM 573284106 25,010 -1,166 4,299
2018-10-25 2018-09-30 13F MARTIN MARIETTA MATLS COM 573284106 26,176 30 0.11 4,763 -18.43 0.0177
2018-07-20 2018-06-30 13F MARTIN MARIETTA MATLS COM 573284106 26,146 -955 -3.52 5,839 3.93 0.0229
2018-04-18 2018-03-31 13F MARTIN MARIETTA MATLS COM 573284106 27,101 10,153 59.91 5,618 49.97 0.0229
2018-01-17 2017-12-31 13F MARTIN MARIETTA MATLS COM 573284106 16,948 1,812 11.97 3,746 19.99 0.0161
2017-10-17 2017-09-30 13F MARTIN MARIETTA MATLS COM 573284106 15,136 4,941 48.46 3,122 37.59 0.0145
2017-07-12 2017-06-30 13F MARTIN MARIETTA MATLS COM 573284106 10,195 2,451 31.65 2,269 34.26 0.0115
2017-04-07 2017-03-31 13F MARTIN MARIETTA MATLS COM 573284106 7,744 5,787 295.71 1,690 289.40 0.0092
2017-01-09 2016-12-31 13F MARTIN MARIETTA MATLS COM 573284106 1,957 64 3.38 434 28.02 0.0026
2016-10-12 2016-09-30 13F MARTIN MARIETTA MATLS COM 573284106 1,893 163 9.42 339 2.11 0.0022
2016-07-12 2016-06-30 13F MARTIN MARIETTA MATLS COM 573284106 1,730 14 0.82 332 21.17 0.0024
2016-04-08 2016-03-31 13F MARTIN MARIETTA MATLS COM 573284106 1,716 -380 -18.13 274 -4.20 0.0021
2016-01-11 2015-12-31 13F MARTIN MARIETTA MATLS COM 573284106 2,096 361 20.81 286 8.33 0.0024
2015-10-09 2015-09-30 13F MARTIN MARIETTA MATLS COM 573284106 1,735 1,735 0.00 264 0.0023
2015-07-09 2015-06-30 13F MARTIN MARIETTA MATLS COM 573284106 0 -1,675 -100.00 0 -100.00
2015-04-13 2015-03-31 13F MARTIN MARIETTA MATLS COM 573284106 1,675 1,675 0.00 234 0.0022
2015-01-29 2014-12-31 13F MARTIN MARIETTA MATLS COM 573284106 0 -1,758 -100.00 0 -100.00
2014-10-10 2014-09-30 13F MARTIN MARIETTA MATLS COM 573284106 1,758 514 41.32 227 38.41 0.0026
2014-08-20 2014-06-30 13F MARTIN MARIETTA MATLS COM 573284106 1,244 0 0.00 164 2.50 0.0021
2014-04-11 2014-03-31 13F MARTIN MARIETTA MATLS COM 573284106 1,244 643 106.99 160 166.67 0.0024
2014-01-06 2013-12-31 13F MARTIN MARIETTA MATLS COM 573284106 601 0 0.00 60 1.69 0.0010
2013-10-10 2013-09-30 13F MARTIN MARIETTA MATLS COM 573284106 601 0 0.00 59 0.00 0.0012
2013-07-09 2013-06-30 13F MARTIN MARIETTA MATLS COM 573284106 601 601 59 0.0014
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2018-07-20 2018-06-30 13F MARTIN MARIETTA MATLS COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2018-04-18 2018-03-31 13F MARTIN MARIETTA MATLS COM Call 100 2 n/a n/a n/a
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.