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 1.4601 for 2026-09-10.

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Figures for 2026-09-10

Volatility Metrics
Historical Volatility (Close-to-Close)	0.0853
Historical Volatility (Parkinson)	0.0571
Implied Volatility (Calls)	0.1411
Implied Volatility (Puts)	0.1440
Implied Volatility (Mean)	0.1426
Put-Call Implied Volatility Ratio	1.0203
Implied Volatility Skew	0.1052
Option Statistics
Put-Call Ratio (Volume)	1.4601
Put-Call Ratio (Open Interest)	3.0598