25-delta Risk Reversal
25-delta risk reversals show the difference in volatility, and therefore price, between puts and calls on the most liquid out-of-the-money (OTM) options quoted on the OTC market. Positive values indicate calls being more expensive than puts (upside protection on the underlying forex spot is relatively more expensive), while negative values indicate puts are more expensive than calls (downside protection is relatively more expensive). Significant changes can indicate a change in market expectations for the future direction in the underlying forex spot rate. Learn more about
volatility smile.