Martin Marietta Materials shares owned by Harbor Advisors
Quarter-by-quarter ownership of Martin Marietta Materials (MLM) shares owned by Harbor Advisors
from 13F filings
Historical chart of Harbor Advisors investment in Martin Marietta Materials
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Quarterly reported holdings in Martin Marietta Materials by Harbor Advisors
| Quarter filed | Position value | Share count | Share price at filing |
|---|---|---|---|
| 2025-09-30 | $2.8M | 4.5k | 630.28 |
| 2025-06-30 | $2.5M | 4.5k | 548.96 |
| 2025-03-31 | $2.2M | 4.5k | 478.13 |
| 2024-12-31 | $2.3M | 4.5k | 516.50 |
| 2024-09-30 | $2.4M | 4.5k | 538.25 |
| 2024-06-30 | $2.4M | 4.5k | 541.80 |
| 2024-03-31 | $2.8M | 4.5k | 613.94 |
| 2023-12-31 | $2.2M | 4.5k | 498.91 |
| 2023-09-30 | $1.8M | 4.5k | 410.48 |
| 2023-06-30 | $2.1M | 4.5k | 461.69 |
| 2023-03-31 | $1.6M | 4.5k | 355.06 |
| 2022-12-31 | $1.5M | 4.5k | 337.97 |
| 2022-09-30 | $1.4M | 4.5k | 322.00 |
| 2022-06-30 | $1.3M | 4.5k | 299.33 |
| 2022-03-31 | $1.7M | 4.5k | 384.89 |
| 2021-12-31 | $2.0M | 4.5k | 440.44 |
| 2021-09-30 | $1.5M | 4.5k | 341.78 |
| 2021-06-30 | $1.6M | 4.5k | 351.78 |
| 2021-03-31 | $1.5M | 4.5k | 335.78 |
| 2020-12-31 | $1.3M | 4.5k | 284.00 |
| 2020-09-30 | $1.1M | 4.5k | 235.33 |
| 2020-06-30 | $930k | 4.5k | 206.67 |
| 2020-03-31 | $852k | 4.5k | 189.33 |
| 2019-12-31 | $1.3M | 4.5k | 279.56 |
| 2019-09-30 | $1.2M | 4.5k | 274.00 |
| 2019-06-30 | $1.0M | 4.5k | 230.00 |
| 2019-03-31 | $905k | 4.5k | 201.11 |
| 2018-12-31 | $773k | 4.5k | 171.78 |
| 2018-09-30 | $819k | 4.5k | 182.00 |
| 2018-06-30 | $1.0M | 4.5k | 223.33 |
| 2018-03-31 | $933k | 4.5k | 207.33 |
| 2017-12-31 | $995k | 4.5k | 221.11 |
| 2017-09-30 | $928k | 4.5k | 206.22 |
| 2017-06-30 | $1.0M | 4.5k | 222.67 |
| 2017-03-31 | $982k | 4.5k | 218.22 |
| 2016-12-31 | $997k | 4.5k | 221.56 |