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.

State Street SPDR S&P 500 ETF Trust (SPY) had 20-Day Put-Call Ratio (Volume) of 1.0474 for 2026-03-13.

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Figures for 2026-03-13

Volatility Metrics
Historical Volatility (Close-to-Close)	0.1241
Historical Volatility (Parkinson)	0.1329
Implied Volatility (Calls)	0.2406
Implied Volatility (Puts)	0.2431
Implied Volatility (Mean)	0.2419
Put-Call Implied Volatility Ratio	1.0101
Implied Volatility Skew	0.1475
Option Statistics
Put-Call Ratio (Volume)	1.0474
Put-Call Ratio (Open Interest)	2.2806