Datamatics Global Services AGARCH Volatility Analysis
Volatility prediction for Tuesday, July 21st, 2026
1 Day
41.28%
decreased by 1.33%
1 Week
43.91%
increased by 1.30%
1 Month
49.20%
increased by 6.59%
Analysis last updated: Tuesday, July 21, 2026 at 07:02 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Sep 1, 2004 to Jul 17, 2026Model Insight
Volatility shocks decay with a half-life of 7 trading days, meaning a shock loses half its impact after approximately 7 days.
σ
AGARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.1529 | 26.24*** |
α ARCH Response to squared shocks | 0.1230 | 31.02*** |
β GARCH Volatility persistence | 0.7783 | 129.70*** |
γ leverage Additional response to negative shocks | -0.1974 | -1.73* |
Persistence:
0.901
Half-life:
7 days
Other Datamatics Global Services Analyses
Other AGARCH Analyses on International Equities