Put-Call Ratio (Volume) (30-Day)

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

Tandem Diabetes Care, Inc. (TNDM) had 30-Day Put-Call Ratio (Volume) of 0.1200 for 2026-07-21.

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Figures for 2026-07-21

Volatility Metrics
Historical Volatility (Close-to-Close)	0.6138
Historical Volatility (Parkinson)	0.5853
Implied Volatility (Calls)	1.1611
Implied Volatility (Puts)	1.0931
Implied Volatility (Mean)	1.1271
Put-Call Implied Volatility Ratio	0.9414
Implied Volatility Skew	-0.0311
Option Statistics
Put-Call Ratio (Volume)	0.1200
Put-Call Ratio (Open Interest)	0.2881