Southern Company (SO)'s 30-day implied volatility (IV30) was 22.3% at the close on October 20, 2026, up from 21.6% the day before, against a 52-week range of 13.0% to 23.7%. Its 20-day historical volatility was 18.8%.
Key numbers
30-day implied volatility (IV30): 22.3%
IV30 52-week range: 13.0% to 23.7% (median 18.9%)
Historical volatility: 20-day 18.8%, 1-year 18.4%
Implied move by the nearest expiration: ±1.2%
Data as of October 20, 2026.
SO Implied Volatility (IV) vs Historical Volatility (HV)
The SO IV term structure shows the implied volatility difference between different maturity dates.
