ProShares Short S&P500 (SH)'s 30-day implied volatility (IV30) was 13.3% at the close on October 23, 2026, down from 13.6% the day before, against a 52-week range of 9.7% to 27.6%. Its 20-day historical volatility was 9.9%.

Key numbers

30-day implied volatility (IV30): 13.3%
IV30 52-week range: 9.7% to 27.6% (median 14.1%)
Historical volatility: 20-day 9.9%, 1-year 13.1%
Implied move by the nearest expiration: ±0.9%

Data as of October 23, 2026.

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

Name: SH Implied Volatility
Creator: Market Chameleon