Put-Call Ratio (Open Interest) (20-Day)

Put-Call Ratio (Open Interest): The ratio of outstanding put contracts to outstanding call contracts at the close of the trading day, for options with the relevant expiration date.

HDFC Bank Limited (HDB) had 20-Day Put-Call Ratio (Open Interest) of 0.2666 for 2025-06-30.

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Figures for 2025-06-30

Volatility Metrics
Historical Volatility (Close-to-Close)	0.1704
Historical Volatility (Parkinson)	0.1278
Implied Volatility (Calls)	0.2111
Implied Volatility (Puts)	0.2091
Implied Volatility (Mean)	0.2101
Put-Call Implied Volatility Ratio	0.9906
Implied Volatility Skew	0.0080
Option Statistics
Put-Call Ratio (Volume)	1.1442
Put-Call Ratio (Open Interest)	0.2666