Put-Call Ratio (Volume) (60-Day)

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

Zai Lab Limited Unsponsored ADR (ZLAB) had 60-Day Put-Call Ratio (Volume) of 1.1264 for 2026-04-20.

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Figures for 2026-04-20

Volatility Metrics
Historical Volatility (Close-to-Close)	0.4976
Historical Volatility (Parkinson)	0.3727
Implied Volatility (Calls)	0.3213
Implied Volatility (Puts)	0.6863
Implied Volatility (Mean)	0.5038
Put-Call Implied Volatility Ratio	2.1359
Implied Volatility Skew	0.0087
Option Statistics
Put-Call Ratio (Volume)	1.1264
Put-Call Ratio (Open Interest)	0.6644