CBOE NASDAQ-100 Volatility Index GARCH Volatility Analysis
Volatility prediction for Tuesday, July 21st, 2026
1 Day
88.37%
decreased by 4.52%
1 Week
89.28%
decreased by 3.61%
1 Month
91.70%
decreased by 1.19%
Analysis last updated: Tuesday, July 21, 2026 at 12:02 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 23, 2001 to Jul 17, 2026Model Insight
Volatility shocks decay with a half-life of 11 trading days, meaning a shock loses half its impact after approximately 11 days.
σ
GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 2.2362 | 22.80*** |
α ARCH Response to squared shocks | 0.1086 | 28.43*** |
β GARCH Volatility persistence | 0.8302 | 148.30*** |
Persistence:
0.939
Half-life:
11 days
Other CBOE NASDAQ-100 Volatility Index Analyses
Other GARCH Analyses on Volatility Indices