Martin Marietta Materials, Inc.
US ˙ NYSE ˙ US5732841060

SecurityMLM / Martin Marietta Materials, Inc.
InstitutionAperio Group, LLC
Latest Disclosed Ownership29,031 shares
Latest Disclosed Value $ 8,244,000
Aperio Group, LLC reports 6.02% increase in ownership of MLM / Martin Marietta Materials, Inc.

On February 5, 2021 - Aperio Group, LLC filed a 13F-HR form disclosing ownership of 29,031 shares of Martin Marietta Materials, Inc. (US:MLM) valued at $8,243,933 USD as of December 31, 2020. The entity filed a previous 13F-HR on November 6, 2020 disclosing 27,383 shares of Martin Marietta Materials, Inc.. This represents a change in shares of 6.02% during the quarter. The current value of the position is $16,716,921 USD.

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)
2021-02-05 2020-12-31 13F MARTIN MARIETTA MATLS COM 573284106 29,031 1,648 6.02 8,244 27.93 0.0244
2020-11-06 2020-09-30 13F MARTIN MARIETTA MATLS COM 573284106 27,383 -1,199 -4.19 6,444 9.15 0.0218
2020-08-13 2020-06-30 13F MARTIN MARIETTA MATLS COM 573284106 28,582 -9,041 -24.03 5,904 -17.08 0.0218
2020-05-05 2020-03-31 13F MARTIN MARIETTA MATLS COM 573284106 37,623 3,866 11.45 7,120 -24.57 0.0315
2020-02-13 2019-12-31 13F MARTIN MARIETTA MATLS COM 573284106 33,757 2,494 7.98 9,439 10.15 0.0339
2019-11-06 2019-09-30 13F MARTIN MARIETTA MATLS COM 573284106 31,263 1,979 6.76 8,569 27.16 0.0339
2019-07-30 2019-06-30 13F MARTIN MARIETTA MATLS COM 573284106 29,284 1,580 5.70 6,739 20.92 0.0275
2019-05-13 2019-03-31 13F MARTIN MARIETTA MATLS COM 573284106 27,704 1,583 6.06 5,573 24.15 0.0241
2019-05-06 2018-12-31 13F/A-1 MARTIN MARIETTA MATLS COM 573284106 26,121 3,512 15.53 4,489 9.12 0.0227
2019-02-14 2018-12-31 13F MARTIN MARIETTA MATLS COM 573284106 26,121 3,512 4,489
2019-05-06 2018-09-30 13F/A-1 MARTIN MARIETTA MATLS COM 573284106 22,609 -418 -1.82 4,114 -20.01 0.0182
2018-10-17 2018-09-30 13F MARTIN MARIETTA MATLS COMMON 573284106 22,609 -418 4,114
2019-05-06 2018-06-30 13F/A-1 MARTIN MARIETTA MATLS COM 573284106 23,027 4,132 21.87 5,143 31.30 0.0246
2018-07-30 2018-06-30 13F MARTIN MARIETTA MATLS COMMON 573284106 23,027 4,132 5,143
2019-05-01 2018-03-31 13F/A-1 MARTIN MARIETTA MATLS COM 573284106 18,895 2,238 13.44 3,917 6.38 0.0195
2018-05-08 2018-03-31 13F MARTIN MARIETTA MATLS COMMON 573284106 18,895 2,238 3,917
2019-05-01 2017-12-31 13F/A-1 MARTIN MARIETTA MATLS COM 573284106 16,657 787 4.96 3,682 12.50 0.0190
2018-02-02 2017-12-31 13F MARTIN MARIETTA MATLS COMMON 573284106 16,657 787 3,682
2019-05-01 2017-09-30 13F/A-1 MARTIN MARIETTA MATLS COM 573284106 15,870 -2,070 -11.54 3,273 -18.03 0.0185
2017-10-25 2017-09-30 13F MARTIN MARIETTA MATLS COMMON 573284106 15,870 -2,070 3,273
2019-04-22 2017-06-30 13F/A-1 MARTIN MARIETTA MATLS COM 573284106 17,940 4,841 36.96 3,993 39.66 0.0245
2017-07-18 2017-06-30 13F MARTIN MARIETTA MATLS COMMON 573284106 17,940 4,841 3,993
2019-04-22 2017-03-31 13F/A-1 MARTIN MARIETTA MATLS COM 573284106 13,099 535 4.26 2,859 2.69 0.0196
2017-05-05 2017-03-31 13F MARTIN MARIETTA MATLS COMMON 573284106 13,099 535 2,859
2019-04-22 2016-12-31 13F/A-1 MARTIN MARIETTA MATLS COM 573284106 12,564 2,067 19.69 2,784 48.01 0.0213
2017-02-14 2016-12-31 13F MARTIN MARIETTA MATLS COMMON 573284106 12,564 2,067 2,783
2019-04-12 2016-09-30 13F/A-1 MARTIN MARIETTA MATLS COM 573284106 10,497 718 7.34 1,881 0.21 0.0136
2016-11-01 2016-09-30 13F MARTIN MARIETTA MATLS COMMON 573284106 10,497 718 1,880
2019-04-12 2016-06-30 13F/A-1 MARTIN MARIETTA MATLS COM 573284106 9,779 600 6.54 1,877 28.21 0.0147
2016-08-12 2016-06-30 13F MARTIN MARIETTA MATLS COMMON 573284106 9,779 600 1,878
2019-04-12 2016-03-31 13F/A-1 MARTIN MARIETTA MATLS COM 573284106 9,179 1,694 22.63 1,464 43.25 0.0125
2016-04-28 2016-03-31 13F MARTIN MARIETTA MATLS COMMON 573284106 9,179 1,694 1,464
2016-01-21 2015-12-31 13F MARTIN MARIETTA MATLS COMMON 573284106 7,485 -357 -4.55 1,022 -14.26 0.0094
2015-10-19 2015-09-30 13F MARTIN MARIETTA MATLS COMMON 573284106 7,842 2,115 36.93 1,192 47.16 0.0121
2015-07-29 2015-06-30 13F MARTIN MARIETTA MATLS COMMON 573284106 5,727 389 7.29 810 8.58 0.0084
2015-04-29 2015-03-31 13F MARTIN MARIETTA MATLS COMMON 573284106 5,338 5,338 0.00 746 0.0084
2015-01-30 2014-12-31 13F MARTIN MARIETTA MATLS COMMON 573284106 0 -5,901 -100.00 0 -100.00
2014-10-21 2014-09-30 13F MARTIN MARIETTA MATLS COMMON 573284106 5,901 2,147 57.19 761 53.43 0.0103
2014-07-23 2014-06-30 13F MARTIN MARIETTA MATLS COMMON 573284106 3,754 1,075 40.13 496 44.19 0.0072
2014-04-25 2014-03-31 13F MARTIN MARIETTA MATLS COMMON 573284106 2,679 344 25.09 0.0048
2014-01-30 2013-12-31 13F MARTIN MARIETTA MATLS COMMON 573284106 275 -3.51 0.0043
2013-10-24 2013-09-30 13F MARTIN MARIETTA MATLS COMMON 573284106 2,905 2,905 285 0.0055
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.