V-Lab
Amazon.com Inc GARCH Volatility Analysis
Volatility prediction for Monday, August 17th, 2026
1 Day
42.86%
decreased by 0.32%
1 Week
42.87%
decreased by 0.31%
1 Month
42.92%
decreased by 0.26%
Analysis last updated: Friday, August 14, 2026 at 09:32 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
May 16, 1997 to Aug 14, 2026Model Insight
With persistence 0.997, volatility shocks have a half-life of 258 trading days (~1.0 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
σ
GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0219 | 7.71*** |
α ARCH Response to squared shocks | 0.0175 | 19.11*** |
β GARCH Volatility persistence | 0.9798 | 893.21*** |
Persistence:
0.997
Half-life:
258 days
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