State Street SPDR S&P Midcap 400 ETF Trust (MDY)'s 30-day implied volatility (IV30) was 23.0% at the close on November 5, 2026, up from 16.8% the day before, against a 52-week range of 13.5% to 28.7%. Its 20-day historical volatility was 14.5%.

Key numbers

30-day implied volatility (IV30): 23.0%
IV30 52-week range: 13.5% to 28.7% (median 17.0%)
Historical volatility: 20-day 14.5%, 1-year 16.5%
Implied move by the nearest expiration: ±1.0%

Data as of November 5, 2026.

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

Name: MDY Implied Volatility
Creator: Market Chameleon