Put-Call Ratio (Open Interest) (30-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.

First Trust Water ETF (FIW) had 30-Day Put-Call Ratio (Open Interest) of 0.7238 for 2025-05-30.

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Figures for 2025-05-30

Volatility Metrics
Historical Volatility (Close-to-Close)	0.1883
Historical Volatility (Parkinson)	0.1080
Implied Volatility (Calls)	0.2200
Implied Volatility (Puts)	0.2396
Implied Volatility (Mean)	0.2298
Put-Call Implied Volatility Ratio	1.0888
Implied Volatility Skew	0.0054
Option Statistics
Put-Call Ratio (Volume)	--
Put-Call Ratio (Open Interest)	0.7238