Implied Volatility (Calls) (120-Day)

Implied Volatility (Calls): The forecasted future volatility of the security over the selected time frame, derived from the pricing of the at-the-money call options with the relevant expiration date.

Atour Lifestyle Holdings Limited Sponsored ADR (ATAT) had 120-Day Implied Volatility (Calls) of 0.4322 for 2026-01-16.

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Volatility Metrics
Historical Volatility (Close-to-Close)	0.3973
Historical Volatility (Parkinson)	0.3692
Implied Volatility (Calls)	0.4322
Implied Volatility (Puts)	0.3530
Implied Volatility (Mean)	0.3926
Put-Call Implied Volatility Ratio	0.8167
Implied Volatility Skew	0.0162
Option Statistics
Put-Call Ratio (Volume)	0.1092
Put-Call Ratio (Open Interest)	0.0781