Companhia Siderurgica Nacional S.A. (SID)'s 30-day implied volatility (IV30) was 92.4% at the close on October 23, 2026, up from 64.7% the day before, against a 52-week range of 31.6% to 88.8%. Its 20-day historical volatility was 68.9%.

Key numbers

30-day implied volatility (IV30): 92.4%
IV30 52-week range: 31.6% to 88.8% (median 54.0%)
Historical volatility: 20-day 68.9%, 1-year 62.1%
Implied move by the nearest expiration: ±4.1%

Data as of October 23, 2026.

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

Name: SID Implied Volatility
Creator: Market Chameleon