SO Historical PE Ratio Notes

— Southern Company (ticker: SO) is a leading utility holding company based in the U.S., primarily engaged in the generation, transmission, & distribution of electricity through its subsidiaries across states like Georgia, Alabama, & Mississippi. The company also has a growing presence in natural gas distribution. Because SO operates in a heavily regulated sector, its revenues and profits are generally seen as relatively stable and predictable compared to companies in more cyclical industries. This stability often translates into a historic price-to-earnings (PE) ratio that is less volatile than broader market averages, as investors value the predictable cash flows & reliable dividends characteristic of large utilities. However, factors such as changes in regulation, fuel costs, interest rates, & the pace of the transition to renewable energy can impact both earnings growth and market sentiment—reflected in periods where SO's PE ratio might trend higher or lower relative to its history. When analyzing SO's historical PE ratio, investors can gain insight into how these external & industry-specific factors, along with shifts in investor risk appetite, have influenced the market's valuation of Southern Company over time.

On this page we presented the SO Historical PE Ratio information for Southern' stock. The average SO historical PE based on using the annualized quarterly earnings result at each measurement period (for the "E" in the PE calculation; and the closing price on earnings date as the "P") is 22.1. Meanwhile, using the trailing twelve month (TTM) quarterly earnings result as our method of calculation the "E" value at each measurement period, the average SO historical PE based on this TTM earnings result method is 18.4.

Let's now compare this SO historical PE result, against the recent PE: when this page was posted on 7/30/2026, the most recent closing price for SO had been 94.34, and the most recent quarterly earnings result, annualized, was 4.52. Meanwhile, the most recent TTM earnings summed to 4.6. From these numbers, we calculate the recent SO PE on 7/30/2026 based on annualized quarterly EPS was 20.9. Based on SO's history, that recent PE is low relative to the historical average, with the recent PE 5.4% lower than the historical average PE across our data set for Southern. Looking at the recent SO PE on 7/30/2026 based on TTM EPS, we calculate the ratio at 20.5. Based on SO's history, that recent PE is elevated relative to the historical average, with the recent PE 11.4% higher than the historical average PE across our Southern data set with TTM EPS used in the calculation at each period.

Another interesting SO historical PE Ratio calculation we look at is to take the median earnings per share of the last four quarters for SO, and then annualize the resulting value... with that annualized number then being used in the PE calculation. To walk through this math for SO, we start with the past four EPS numbers and we first sort them from lowest to highest: 0.55, 1.13, 1.32, and 1.60. We then toss out the highest and lowest result, and then take the average of those two middle numbers — 1.13 and 1.32 — which gives us the median of 1.23. Basically the way to think about this 1.23 number is this: for the trailing four earnings reports, 1.23 marks the "middle ground" number where SO has reported a value higher than 1.23 half the time, and has reported a value lower than 1.23 half the time. Annualizing that median value then gets us to 4.92/share, which we use as the denominator in our next PE calculation. With 94.34 as the numerator (as of 7/30/2026), the calculation is then 94.34 / 4.92 = 19.2 as the SO PE ratio as of 7/30/2026, based on that annualized median value we calculated.

For self directed investors doing their due diligence on SO or any other given stock, valuation analysis for SO can greatly benefit from studying the past earnings and resulting PE calculations. This exercise can help inform an analysis as to whether the past earnings trajectory and current versus historical PE ratios justify the current stock value.

That's why we bring you HistoricalPERatio.com to make it easy for investors to investigate Southern PE history or the past PE information for any stock in our coverage universe. And in your continued research we hope you will be sure to check out the further links included for earnings surprises history (beat/miss data) as well as next earnings dates for SO. Thanks for visiting, and the next time you need to research SO Historical PE Ratio or the ratio for another stock, we hope you'll think of our site, as your go-to historical PE ratio research resource of choice.