Put-Call Ratio (Volume) (180-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 180-Day Put-Call Ratio (Volume) of 1.0377 for 2026-08-20.

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Figures for 2026-08-20

Volatility Metrics
Historical Volatility (Close-to-Close)	0.4299
Historical Volatility (Parkinson)	0.3918
Implied Volatility (Calls)	0.4496
Implied Volatility (Puts)	0.4509
Implied Volatility (Mean)	0.4502
Put-Call Implied Volatility Ratio	1.0028
Implied Volatility Skew	0.0248
Option Statistics
Put-Call Ratio (Volume)	1.0377
Put-Call Ratio (Open Interest)	1.3315