Historical Volatility (Parkinson) (20-Day)

Historical Volatility (Parkinson): The past volatility of the security over the selected time frame, calculated using the high and low prices on each trading day.

PTC Inc. (PTC) had 20-Day Historical Volatility (Parkinson) of 0.3347 for 2026-06-05.

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Figures for 2026-06-05

Volatility Metrics
Historical Volatility (Close-to-Close)	0.3240
Historical Volatility (Parkinson)	0.3347
Implied Volatility (Calls)	0.4527
Implied Volatility (Puts)	0.3515
Implied Volatility (Mean)	0.4021
Put-Call Implied Volatility Ratio	0.7765
Implied Volatility Skew	--
Option Statistics
Put-Call Ratio (Volume)	0.6460
Put-Call Ratio (Open Interest)	0.8130