Put-Call Implied Volatility Ratio (180-Day)
Put-Call Implied Volatility Ratio: The ratio of implied volatilities of the at-the-money puts to the at-the-money calls.
First Trust S&P International Dividend Aristocrats ETF (FID) had 180-Day Put-Call Implied Volatility Ratio of 0.9885 for 2026-01-16.
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