Put-Call Ratio (Volume) (20-Day)

Put-Call Ratio (Volume): The ratio of puts traded to calls traded, for options with the relevant expiration date.

Align Technology, Inc. (ALGN) had 20-Day Put-Call Ratio (Volume) of 0.7617 for 2026-04-06.

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Figures for 2026-04-06

Volatility Metrics
Historical Volatility (Close-to-Close)	0.4279
Historical Volatility (Parkinson)	0.3989
Implied Volatility (Calls)	0.4962
Implied Volatility (Puts)	0.4878
Implied Volatility (Mean)	0.4920
Put-Call Implied Volatility Ratio	0.9832
Implied Volatility Skew	0.0845
Option Statistics
Put-Call Ratio (Volume)	0.7617
Put-Call Ratio (Open Interest)	4.1956