Historical Volatility (Close-to-Close) (10-Day)

Historical Volatility (Close-to-Close): The past volatility of the security over the selected time frame, calculated using the closing price on each trading day.

AT&T Inc. (T) had 10-Day Historical Volatility (Close-to-Close) of 0.1035 for 2021-07-30.

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

Figures for 2021-07-30

Volatility Metrics
Historical Volatility (Close-to-Close)	0.1035
Historical Volatility (Parkinson)	0.1414
Implied Volatility (Calls)	0.1321
Implied Volatility (Puts)	0.1337
Implied Volatility (Mean)	0.1329
Put-Call Implied Volatility Ratio	1.0121
Implied Volatility Skew	0.0323
Option Statistics
Put-Call Ratio (Volume)	0.6218
Put-Call Ratio (Open Interest)	0.6313
Forward Price	28.15
Call Breakeven Price	28.99
Put Breakeven Price	27.15
Option Breakeven Price	28.28

Data from Quantcha