As of Oct 2, 2026, MPLX's PEG ratio of 1.15 reflects its valuation relative to its growth. This value reflects a P/E ratio of 12.12 measured against EPS growth of 10.5%. MPLX's current PEG ratio has held stable relative to its 4-quarter average.
MPLX's ten years historical PEG ratio has an average of 1.02. Compared to historical data, MPLX's 1.15 PE to growth ratio represents a rise of 13%. MPLX reached its maximum PEG ratio of 7.43 during the Dec 2023 quarter over the past ten years. The Dec 2021 quarter had the bottom reading at 0.02, indicating the most optimal growth-adjusted valuation.
| Year | PEG ratio | PE ratio | Growth YoY |
|---|---|---|---|
| 2025 | 0.76 | 11.07 | 14.5% |
| 2024 | 1.05 | 11.37 | 10.8% |
| 2023 | 7.43 | 9.66 | 1.3% |
| 2022 | 0.28 | 8.76 | 31.1% |
| 2021 | 0.02 | 10.35 | 457.5% |
| 2020 | N/A | N/A | -180% |
| 2019 | N/A | 25.46 | -56.3% |
| 2018 | 0.12 | 13.23 | 114% |
| 2017 | N/A | 33.15 | N/A |
| 2016 | N/A | N/A | -100% |
| 2015 | N/A | 31.98 | -20.6% |
| 2014 | 1 | 47.41 | 47.6% |
| 2013 | 0.09 | 42.42 | 483.3% |
| 2012 | N/A | 173.28 | N/A |
| 2011 | N/A | N/A | N/A |
| Year | PEG ratio | PE ratio | Growth YoY |
|---|---|---|---|
| Jun 2026 | 1.15 | 12.11 | 10.5% |
| Mar 2026 | 1.84 | 12.35 | 6.7% |
| Dec 2025 | 0.76 | 11.07 | 14.5% |
| Sep 2025 | 0.94 | 10.58 | 11.3% |
| Jun 2025 | 5.56 | 12.24 | 2.2% |
| Mar 2025 | 1.07 | 12.36 | 11.6% |
| Dec 2024 | 1.05 | 11.37 | 10.8% |
| Sep 2024 | 0.49 | 10.49 | 21.5% |
| Jun 2024 | 2.59 | 10.34 | 4% |
| Mar 2024 | N/A | 10.71 | 0% |
| Dec 2023 | 7.43 | 9.66 | 1.3% |
| Sep 2023 | N/A | 10.19 | -7.2% |
| Jun 2023 | 0.33 | 8.57 | 26.1% |
| Mar 2023 | 0.29 | 8.88 | 30.6% |
| Dec 2022 | 0.28 | 8.76 | 31.1% |
When comparing to historical values, MPLX's PEG ratio is higher than its 10-year average, though it is below the 3 and 5-year averages.
MPLX's PEG of 1.15 is above the Energy sector and the industry average. Compared to its Energy sector average of 0.37, MPLX's PEG is 211% higher.
MPLX has a PEG ratio above that of peer stocks MPC and PAA.
Based on Oct 2, 2026 data, MPLX carries a PEG ratio of 1.15.
MPLX has a 3-year average PEG ratio of 2.29.
MPLX has a 5-year average PEG ratio of 1.47.
MPLX's PEG ratio peaked at 7.43 during the Dec 2023 quarter - the highest in ten years.
Currently, MPLX's PEG ratio stands 13% higher than its 10-year historical average.
To calculate the PEG ratio, take the company's PE ratio and divide by its EPS growth (YoY TTM). As of Oct 2, 2026, MPLX has a P/E ratio of 12.12. Earnings grew at 10.5% over the TTM period ending Jun 2026. Applying the formula, this produces a price to earnings growth ratio of 1.15. PEG RATIO(1.15) = PE RATIO(12.12) / EPS GROWTH(10.5%)
All PEG ratio stats are based on quarterly TTM periods, unless otherwise specified.