CBOE Volatility Index

CBOE NASDAQ-100 Volatility Index

CBOE DJIA Volatility Index

CBOE Russell 2000 Volatility Index

CBOE S&P 500 9-Day Volatility Index

CBOE 3-Month Volatility Index

CBOE 1-Day Volatility Index

CBOE S&P 500 6-Month Volatility Index

CBOE S&P 500 One-Year Volatility Index

CBOE Skew Index

How volatility evolves over time

How illiquidity evolves over time

{name} Model Equation

How returns affect tomorrow's volatility

How returns affect tomorrow's illiquidity

Spline Coefficients

Value at Risk (VaR) estimates the maximum loss at a given confidence level. Expected Shortfall (ES) estimates the average loss beyond VaR.

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Param	Value	t-stat
ωconst	2.9044	1.11
αARCH	0.0692	8.45***
βGARCH	0.9912	124.14***
νDF	5.7443	2.09**

Parameter	Value	t-statistic
ω const Unconditional variance weight	2.9044	1.11
α ARCH Response to squared shocks	0.0692	8.45***
β GARCH Volatility persistence	0.9912	124.14***
ν DF Student-t tail thickness	5.7443	2.09**

V-Lab

AT&T Inc GAS-GARCH Student T Volatility Analysis

Date Range:

News Impact Curve

Volatility Forecast

Parameter Estimates

Other AT&T Inc Analyses