SPDR S&P 500 ETF (SPY)
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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.
SPDR S&P 500 ETF (SPY) had 150-Day Implied Volatility (Puts) of 0.2176 for 2021-11-30.