Main Street Capital (MAIN)'s 30-day implied volatility (IV30) was 20.0% at the close on November 6, 2026, down from 20.7% the day before, against a 52-week range of 15.8% to 35.5%. Its 20-day historical volatility was 18.2%.

Key numbers

30-day implied volatility (IV30): 20.0%
IV30 52-week range: 15.8% to 35.5% (median 23.3%)
Historical volatility: 20-day 18.2%, 1-year 24.0%
Implied move by the nearest expiration: ±1.3%

Data as of November 6, 2026.

MAIN Implied Volatility (IV) vs Historical Volatility (HV)

Name: MAIN Implied Volatility
Creator: Market Chameleon