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 0.0987 for 2026-01-16.

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Figures for 2026-01-16

Volatility Metrics
Historical Volatility (Close-to-Close)	0.4586
Historical Volatility (Parkinson)	0.5276
Implied Volatility (Calls)	0.9524
Implied Volatility (Puts)	0.8840
Implied Volatility (Mean)	0.9182
Put-Call Implied Volatility Ratio	0.9281
Implied Volatility Skew	0.2207
Option Statistics
Put-Call Ratio (Volume)	0.0987
Put-Call Ratio (Open Interest)	0.2651