Put-Call Implied Volatility Ratio (20-Day)
Put-Call Implied Volatility Ratio: The ratio of implied volatilities of the at-the-money puts to the at-the-money calls.
Companhia Paranaense de Energia (COPEL) (ELP) had 20-Day Put-Call Implied Volatility Ratio of 5.7275 for 2025-07-11.
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