Atmos Energy (ATO)'s 30-day implied volatility (IV30) was 18.3% at the close on October 21, 2026, up from 18.1% the day before, against a 52-week range of 12.6% to 23.2%. Its 20-day historical volatility was 15.3%.
Key numbers
30-day implied volatility (IV30): 18.3%
IV30 52-week range: 12.6% to 23.2% (median 17.7%)
Historical volatility: 20-day 15.3%, 1-year 17.6%
Implied move by the nearest expiration: ±1.1%
Data as of October 21, 2026.
ATO Implied Volatility (IV) vs Historical Volatility (HV)
The ATO IV term structure shows the implied volatility difference between different maturity dates.
