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.

Thermo Fisher Scientific Inc. (TMO) had 20-Day Put-Call Ratio (Volume) of 0.6590 for 2026-07-21.

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Figures for 2026-07-21

Volatility Metrics
Historical Volatility (Close-to-Close)	0.2224
Historical Volatility (Parkinson)	0.2737
Implied Volatility (Calls)	0.4141
Implied Volatility (Puts)	0.4470
Implied Volatility (Mean)	0.4305
Put-Call Implied Volatility Ratio	1.0794
Implied Volatility Skew	0.0081
Option Statistics
Put-Call Ratio (Volume)	0.6590
Put-Call Ratio (Open Interest)	0.7864