Mdu Resources Group Common (Holding Company) (MDU)'s 30-day implied volatility (IV30) was 22.1% at the close on October 27, 2026, down from 23.6% the day before, against a 52-week range of 14.5% to 31.8%. Its 20-day historical volatility was 17.0%.
Data as of October 27, 2026.