Boston Partners’s Marathon Pete Corp Position
Does Boston Partners own Marathon Pete Corp (MPC)? Yes — 5.65M shares worth $1.4B (+1.44% of its 13F portfolio) as of Q1 2026, down from 6.12M shares the prior filed quarter.
Position Value
$1.4B
Q1 2026
Shares
5.65M
% of Portfolio
+1.44%
Quarters Held
30
currently held
Position History MPC
Reported value by quarter
| Quarter | Shares | Value | % of Portfolio |
|---|---|---|---|
| Q1 2026 | 5.65M | $1.4B | +1.44% |
| Q4 2025 | 6.12M | $998M | +1.03% |
| Q3 2025 | 6.31M | $1.2B | +1.25% |
| Q2 2025 | 6.16M | $1.0B | +1.14% |
| Q1 2025 | 5.45M | $791M | +0.96% |
| Q4 2024 | 3.44M | $481M | +0.58% |
| Q3 2024 | 2.50M | $407M | +0.48% |
| Q2 2024 | 2.56M | $444M | +0.55% |
| Q1 2024 | 2.77M | $558M | +0.67% |
| Q4 2023 | 2.76M | $411M | +0.54% |
| Q3 2023 | 4.50M | $680M | +0.94% |
| Q2 2023 | 5.18M | $609M | +0.82% |
| Q1 2023 | 6.41M | $861M | +1.18% |
| Q4 2022 | 6.88M | $803M | +1.09% |
| Q3 2022 | 7.96M | $794M | +1.16% |
| Q2 2022 | 8.79M | $724M | +1.01% |
| Q1 2022 | 10.65M | $910M | +1.10% |
| Q4 2021 | 11.93M | $765M | +0.92% |
| Q3 2021 | 12.30M | $761M | +0.96% |
| Q2 2021 | 12.18M | $735M | +0.94% |
| Q1 2021 | 12.17M | $651M | +0.87% |
| Q4 2020 | 10.32M | $427M | +0.66% |
| Q3 2020 | 11.43M | $335M | +0.61% |
| Q2 2020 | 11.91M | $445M | +0.82% |
| Q1 2020 | 11.87M | $280M | +0.56% |
| Q4 2019 | 34.00M | $2.0B | +1.46% |
| Q3 2019 | 12.81M | $779M | +1.05% |
| Q2 2019 | 7.20M | $402M | +0.53% |
| Q1 2019 | 2.29M | $137M | +0.18% |
| Q4 2018 | 12.17M | $718M | +1.03% |
Common-stock position only; options are excluded. Quarters where the fund filed no 13F or reported no position are absent. See Boston Partners’s full portfolio or all institutional holders of MPC.