Silicon Motion Technology - American Depositary Shares Each Representing Four (SIMO)'s 30-day implied volatility (IV30) was 88.1% at the close on November 4, 2026, up from 85.3% the day before, against a 52-week range of 43.5% to 126.8%. Its 20-day historical volatility was 89.4%.

Key numbers

30-day implied volatility (IV30): 88.1%
IV30 52-week range: 43.5% to 126.8% (median 76.2%)
Historical volatility: 20-day 89.4%, 1-year 78.7%
Implied move by the nearest expiration: ±5.5%

Data as of November 4, 2026.

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

Name: SIMO Implied Volatility
Creator: Market Chameleon