Southern is trading with a PEG ratio of 2.55, based on Nov 11, 2026 data. Dividing the 21.38 PE ratio by the 8.4% earnings growth rate yields this valuation metric.
SO PEG ratio history
Historically, Southern shows a PEG ratio averaging 1.36 across the past ten years. At 2.55, today's PEG ratio sits 88% above its historical average. The ten years high occurred in the Mar 2020 quarter at 5.77, reflecting maximum valuation relative to growth. The minimum was hit in the Sep 2018 quarter at 0.05, indicating optimal value relative to growth during that period.
Southern PEG ratio by year
| Year | PEG ratio | PE ratio | Growth YoY |
|---|---|---|---|
| 2025 | N/A | 22.13 | -2% |
| 2024 | 1.97 | 20.48 | 10.4% |
| 2023 | 1.75 | 19.26 | 11% |
| 2022 | 0.48 | 21.77 | 45.1% |
| 2021 | N/A | 30.35 | -23.4% |
| 2020 | N/A | 20.82 | -34.9% |
| 2019 | 0.13 | 14.06 | 107.8% |
| 2018 | 0.13 | 20.15 | 159.5% |
| 2017 | N/A | 57.25 | -67.3% |
| 2016 | N/A | 19.14 | -1.2% |
| 2015 | 0.96 | 18 | 18.7% |
| 2014 | 1.36 | 22.42 | 16.5% |
| 2013 | N/A | 21.87 | -30.4% |
| 2012 | 3.11 | 15.86 | 5.1% |
| 2011 | 2.14 | 18.01 | 8.4% |
Southern PEG ratio by quarter (TTM)
| Year | PEG ratio | PE ratio | Growth YoY |
|---|---|---|---|
| Sep 2026 | 2.25 | 18.88 | 8.4% |
| Jun 2026 | 3.33 | 22.95 | 6.9% |
| Mar 2026 | N/A | 24.5 | -6.2% |
| Dec 2025 | N/A | 22.13 | -2% |
| Sep 2025 | N/A | 23.4 | -6% |
| Jun 2025 | N/A | 23.55 | -7.4% |
| Mar 2025 | 2.67 | 21.89 | 8.2% |
| Dec 2024 | 1.97 | 20.48 | 10.4% |
| Sep 2024 | 0.37 | 20.92 | 56.2% |
| Jun 2024 | 0.37 | 18.43 | 49.3% |
| Mar 2024 | 0.72 | 18.49 | 25.6% |
| Dec 2023 | 1.75 | 19.26 | 11% |
| Sep 2023 | N/A | 23.45 | -12.9% |
| Jun 2023 | N/A | 24.91 | -1.1% |
| Mar 2023 | 0.52 | 22.52 | 43.1% |
SO average PEG ratio chart
When comparing to historical values, SO's PEG ratio is higher than its 3, 5 and 10-year averages.
PEG comparison
Southern's PEG of 2.55 is above the Utilities sector, the industry and its peers average. Compared to its Utilities sector average of 1.45, Southern's PEG is 76% higher.
SO EPS growth
SO Price vs fair value
SO PEG vs peers
Compared to its peers, SO has a PEG ratio under stocks D and ETR, while above NEE's and DUK's. At 2.55, Southern's PEG ratio stands higher than the peer group average of 1.92.
Frequently asked questions
What is Southern's PEG ratio?
Based on Nov 11, 2026 data, SO carries a PEG ratio of 2.55.
What is the 3-year average PEG ratio for Southern (SO)?
SO's 3-year PEG ratio average stands at 1.68.
What is the 5-year average PEG ratio for Southern (SO)?
SO's 5-year PEG ratio average stands at 1.47.
What is the highest PEG ratio for SO?
SO's PEG ratio peaked at 5.77 during the Mar 2020 quarter - the highest in ten years.
How does the current PEG ratio for SO compare to its historical average?
Compared to the 10-year average, SO's PEG ratio is 88% higher.
Why is Southern's PEG ratio so high?
The elevated PEG ratio of 2.55 indicates that SO may be overvalued relative to its earnings growth potential.
How is SO's PEG ratio calculated (Southern PEG ratio formula)?
Computing the PEG ratio involves dividing the PE ratio by the company's EPS growth (YoY TTM). As of Nov 11, 2026, Southern has a P/E ratio of 21.38. Earnings grew at 8.4% over the TTM period ending Sep 2026. Applying the formula, this produces a price to earnings growth ratio of 2.55. PEG RATIO(2.55) = PE RATIO(21.38) / EPS GROWTH(8.4%)
All PEG ratio stats are based on quarterly TTM periods, unless otherwise specified.