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.

NIO Inc. (NIO) had 20-Day Put-Call Ratio (Volume) of 0.8384 for 2026-07-17.

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Figures for 2026-07-17

Volatility Metrics
Historical Volatility (Close-to-Close)	0.3919
Historical Volatility (Parkinson)	0.3384
Implied Volatility (Calls)	0.6000
Implied Volatility (Puts)	0.5838
Implied Volatility (Mean)	0.5919
Put-Call Implied Volatility Ratio	0.9731
Implied Volatility Skew	--
Option Statistics
Put-Call Ratio (Volume)	0.8384
Put-Call Ratio (Open Interest)	0.1987