Historical Volatility (Parkinson) (180-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.

AT&T Inc. (T) had 180-Day Historical Volatility (Parkinson) of 0.1680 for 2024-04-23.

10-Day 20-Day 30-Day 60-Day
90-Day 120-Day 150-Day 180-Day

Figures for 2024-04-23

Volatility Metrics
Historical Volatility (Close-to-Close)	0.1929
Historical Volatility (Parkinson)	0.1680
Implied Volatility (Calls)	0.1673
Implied Volatility (Puts)	0.2961
Implied Volatility (Mean)	0.2317
Put-Call Implied Volatility Ratio	1.7699
Implied Volatility Skew	--
Option Statistics
Put-Call Ratio (Volume)	0.6552
Put-Call Ratio (Open Interest)	0.6099
Forward Price	16.37
Call Breakeven Price	19.71
Put Breakeven Price	14.52
Option Breakeven Price	17.75