Ferroglobe PLC - (GSM)'s 30-day implied volatility (IV30) was 49.4% at the close on November 4, 2026, down from 56.7% the day before, against a 52-week range of 34.3% to 87.3%. Its 20-day historical volatility was 44.5%.
Key numbers
30-day implied volatility (IV30): 49.4%
IV30 52-week range: 34.3% to 87.3% (median 51.0%)
Historical volatility: 20-day 44.5%, 1-year 54.7%
Implied move by the nearest expiration: ±4.0%
Data as of November 4, 2026.
GSM Implied Volatility (IV) vs Historical Volatility (HV)
The GSM IV term structure shows the implied volatility difference between different maturity dates.
