Martin Marietta Materials, Inc.
MX ˙ BMV ˙ US5732841060
SecurityMX:MLM / Martin Marietta Materials, Inc.
InstitutionWaratah Capital Advisors Ltd.
Latest Disclosed Ownership43,620 shares
Latest Disclosed Value $ 25,678,222
Waratah Capital Advisors Ltd. ownership in MLM / Martin Marietta Materials, Inc.

On May 11, 2026 - Waratah Capital Advisors Ltd. filed a 13F-HR form disclosing ownership of 43,620 shares of Martin Marietta Materials, Inc. (MX:MLM) valued at $25,678,222 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 9, 2026 disclosing 22,274 shares of Martin Marietta Materials, Inc.. This represents a change in shares of 95.83% during the quarter.

Waratah Capital Advisors Ltd. 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.

MX: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)
2026-05-11 2026-03-31 13F MARTIN MARIETTA MATLS COM 573284106 43,620 21,346 95.83 25,678 85.15 0.9782
2026-02-09 2025-12-31 13F MARTIN MARIETTA MATLS COM 573284106 22,274 -16,407 -42.42 13,869 -43.11 0.4669
2025-11-10 2025-09-30 13F MARTIN MARIETTA MATLS COM 573284106 38,681 -5,336 -12.12 24,380 0.89 0.4306
2025-08-11 2025-06-30 13F MARTIN MARIETTA MATLS COM 573284106 44,017 14,700 50.14 24,164 72.38 0.6429
2025-05-13 2025-03-31 13F MARTIN MARIETTA MATLS COM 573284106 29,317 -75,835 -72.12 14,017 -74.19 0.3768
2025-02-12 2024-12-31 13F MARTIN MARIETTA MATLS COM 573284106 105,152 57,795 122.04 54,311 113.08 1.8234
2024-11-12 2024-09-30 13F MARTIN MARIETTA MATLS COM 573284106 47,357 -13,255 -21.87 25,490 -22.38 0.5025
2024-08-12 2024-06-30 13F MARTIN MARIETTA MATLS COM 573284106 60,612 -17,415 -22.32 32,840 -31.45 1.2043
2024-05-14 2024-03-31 13F MARTIN MARIETTA MATLS COM 573284106 78,027 2,097 2.76 47,904 26.45 1.4341
2024-02-12 2023-12-31 13F MARTIN MARIETTA MATLS COM 573284106 75,930 -17,754 -18.95 37,882 -1.49 0.7529
2023-11-13 2023-09-30 13F MARTIN MARIETTA MATLS COM 573284106 93,684 35,669 61.48 38,455 43.57 0.5495
2023-08-14 2023-06-30 13F MARTIN MARIETTA MATLS COM 573284106 58,015 31,867 121.87 26,785 188.50 0.5100
2023-05-11 2023-03-31 13F MARTIN MARIETTA MATLS COM 573284106 26,148 15,015 134.87 9,284 146.78 0.2043
2023-02-10 2022-12-31 13F MARTIN MARIETTA MATLS COM 573284106 11,133 7,486 205.26 3,763 220.17 0.0615
2022-11-07 2022-09-30 13F MARTIN MARIETTA MATLS COM 573284106 3,647 -12,170 -76.94 1,175 -75.15 0.0179
2022-08-15 2022-06-30 13F MARTIN MARIETTA MATLS COM 573284106 15,817 15,817 4,728 0.1041
2022-02-14 2021-12-31 13F MARTIN MARIETTA MATLS COM 573284106 0 -6,789 -100.00 0 -100.00
2021-11-02 2021-09-30 13F MARTIN MARIETTA MATLS COM 573284106 6,789 6,789 2,320 0.0350
2021-08-03 2021-06-30 13F MARTIN MARIETTA MATLS COM 573284106 0 -5,098 -100.00 0 -100.00
2021-05-11 2021-03-31 13F MARTIN MARIETTA MATLS COM 573284106 5,098 -53,649 -91.32 1,712 -89.74 0.0387
2021-02-08 2020-12-31 13F MARTIN MARIETTA MATLS COM 573284106 58,747 -9,526 -13.95 16,682 3.81 1.1460
2020-11-12 2020-09-30 13F MARTIN MARIETTA MATLS COM 573284106 68,273 68,273 16,069 1.7142
2020-08-14 2020-06-30 13F/A-1 MARTIN MARIETTA MATLS COM 573284106 0 -4,363 -100.00 0 -100.00
2020-05-05 2020-03-31 13F MARTIN MARIETTA MATLS COM 573284106 4,363 4,363 826 0.1469
2018-10-26 2018-09-30 13F MARTIN MARIETTA MATLS COM 573284106 0 -12,545 -100.00 0 -100.00
2018-08-14 2018-06-30 13F MARTIN MARIETTA MATLS COM 573284106 12,545 12,545 2,802 0.3084
2017-11-13 2017-09-30 13F MARTIN MARIETTA MATLS COM 573284106 0 -17,249 -100.00 0 -100.00
2017-08-14 2017-06-30 13F MARTIN MARIETTA MATLS COM 573284106 17,249 13,763 394.81 3,839 404.47 0.5378
2017-05-11 2017-03-31 13F MARTIN MARIETTA MATLS COM 573284106 3,486 3,486 761 0.1005
2016-05-04 2016-03-31 13F MARTIN MARIETTA MATLS COM 573284106 0 -10,537 -100.00 0 -100.00
2016-02-12 2015-12-31 13F MARTIN MARIETTA MATLS INC COM COM 573284106 10,537 -4,563 -30.22 1,439 -37.27 0.2659
2015-11-03 2015-09-30 13F MARTIN MARIETTA MATLS COM 573284106 15,100 -45,450 -75.06 2,294 -73.23 0.4853
2015-07-30 2015-06-30 13F * MARTIN MARIETTA MATLS INC COM COM 573284106 60,550 57,950 2,228.85 8,568 2,260.33 1.9339
2015-05-11 2015-03-31 13F * MARTIN MARIETTA MATLS INC COM COM 573284106 2,600 2,600 363 0.0992
2014-11-12 2014-09-30 13F * MARTIN MARIETTA MATLS INC COM COM 573284106 0 -114,075 -100.00 0 -100.00
2014-08-13 2014-06-30 13F * MARTIN MARIETTA MATLS INC COM COM 573284106 114,075 109,875 2,616.07 15,064 2,694.81 7.3583
2014-05-15 2014-03-31 13F MARTIN MARIETTA MATLS INC COM COM 573284106 4,200 4,200 539 0.2968
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
(%)
2025-08-11 2025-06-30 13F MARTIN MARIETTA MATLS COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2025-05-13 2025-03-31 13F MARTIN MARIETTA MATLS COM Call 25,000 11,953 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.