Harbor Advisors’s Martin Marietta Materials MLM Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q2 | $2.6M | Hold |
4,500
| – | – | 0.33% | 33 |
|
|
2026
Q1 | $2.65M | Hold |
4,500
| – | – | 0.38% | 29 |
|
|
2025
Q4 | $2.8M | Hold |
4,500
| – | – | 0.42% | 30 |
|
|
2025
Q3 | $2.84M | Hold |
4,500
| – | – | 0.44% | 32 |
|
|
2025
Q2 | $2.47M | Hold |
4,500
| – | – | 0.4% | 35 |
|
|
2025
Q1 | $2.15M | Hold |
4,500
| – | – | 0.37% | 38 |
|
|
2024
Q4 | $2.32M | Hold |
4,500
| – | – | 0.37% | 38 |
|
|
2024
Q3 | $2.42M | Hold |
4,500
| – | – | 0.41% | 32 |
|
|
2024
Q2 | $2.44M | Hold |
4,500
| – | – | 0.45% | 32 |
|
|
2024
Q1 | $2.76M | Hold |
4,500
| – | – | 0.51% | 32 |
|
|
2023
Q4 | $2.25M | Hold |
4,500
| – | – | 0.43% | 33 |
|
|
2023
Q3 | $1.85M | Hold |
4,500
| – | – | 0.4% | 35 |
|
|
2023
Q2 | $2.08M | Hold |
4,500
| – | – | 0.44% | 31 |
|
|
2023
Q1 | $1.6M | Hold |
4,500
| – | – | 0.37% | 35 |
|
|
2022
Q4 | $1.52M | Hold |
4,500
| – | – | 0.38% | 37 |
|
|
2022
Q3 | $1.45M | Hold |
4,500
| – | – | 0.39% | 37 |
|
|
2022
Q2 | $1.35M | Hold |
4,500
| – | – | 0.33% | 43 |
|
|
2022
Q1 | $1.73M | Hold |
4,500
| – | – | 0.36% | 37 |
|
|
2021
Q4 | $1.98M | Hold |
4,500
| – | – | 0.37% | 38 |
|
|
2021
Q3 | $1.54M | Hold |
4,500
| – | – | 0.31% | 41 |
|
|
2021
Q2 | $1.58M | Hold |
4,500
| – | – | 0.31% | 41 |
|
|
2021
Q1 | $1.51M | Hold |
4,500
| – | – | 0.34% | 42 |
|
|
2020
Q4 | $1.28M | Hold |
4,500
| – | – | 0.29% | 44 |
|
|
2020
Q3 | $1.06M | Hold |
4,500
| – | – | 0.25% | 43 |
|
|
2020
Q2 | $930K | Hold |
4,500
| – | – | 0.24% | 44 |
|
|
2020
Q1 | $852K | Hold |
4,500
| – | – | 0.26% | 42 |
|
|
2019
Q4 | $1.26M | Hold |
4,500
| – | – | 0.34% | 36 |
|
|
2019
Q3 | $1.23M | Hold |
4,500
| – | – | 0.35% | 36 |
|
|
2019
Q2 | $1.03M | Hold |
4,500
| – | – | 0.31% | 45 |
|
|
2019
Q1 | $905K | Hold |
4,500
| – | – | 0.29% | 47 |
|
|
2018
Q4 | $773K | Hold |
4,500
| – | – | 0.3% | 52 |
|
|
2018
Q3 | $819K | Hold |
4,500
| – | – | 0.25% | 59 |
|
|
2018
Q2 | $1M | Hold |
4,500
| – | – | 0.32% | 47 |
|
|
2018
Q1 | $933K | Hold |
4,500
| – | – | 0.31% | 49 |
|
|
2017
Q4 | $995K | Hold |
4,500
| – | – | 0.34% | 50 |
|
|
2017
Q3 | $928K | Hold |
4,500
| – | – | 0.34% | 48 |
|
|
2017
Q2 | $1M | Hold |
4,500
| – | – | 0.4% | 39 |
|
|
2017
Q1 | $982K | Hold |
4,500
| – | – | 0.42% | 34 |
|
|
2016
Q4 | $997K | Buy |
+4,500
| New | +$925K | 0.48% | 35 |
|
Other funds holding MLM
Harbor Advisors's MLM Position: Q2 2026 in Review
Harbor Advisors held its Martin Marietta Materials (MLM) position steady in Q2 2026 at 4,500 shares worth $2.6M. The position accounts for 0.33% of the portfolio, ranked #33.
Harbor Advisors first reported a position in MLM in Q4 2016 and has held it in 39 quarters since. The position peaked at $2.84M in Q3 2025. 1,069 funds tracked by Wall St. Rank hold MLM as of Q2 2026.
- Harbor Advisors held 4,500 shares of Martin Marietta Materials worth $2.6M as of Q2 2026.
- Harbor Advisors left its Martin Marietta Materials share count unchanged in Q2 2026.
- Martin Marietta Materials made up 0.33% of Harbor Advisors's portfolio in Q2 2026, its #33 holding.
- Harbor Advisors first reported a position in Martin Marietta Materials in Q4 2016 and has held it in 39 quarters since.
- Harbor Advisors's Martin Marietta Materials position peaked at $2.84M in Q3 2025.
- 1,069 funds tracked by Wall St. Rank held Martin Marietta Materials as of Q2 2026.
Based on Harbor Advisors's 13F filing for Q2 2026, filed 28 Jul 2026.