Implied Volatility (Puts): The forecasted future volatility of the security over the selected time frame, derived from the pricing of the at-the-money put options with the relevant expiration date.
State Street SPDR S&P 500 Fossil Fuel Reserves Free ETF (SPYX) had 180-Day Implied Volatility (Puts) of 0.1807 for 2026-01-16.