V-Lab
ZIP Co Ltd AGARCH Volatility Analysis
Volatility prediction for Monday, August 17th, 2026
1 Day
68.91%
decreased by 3.69%
1 Week
70.79%
decreased by 1.81%
1 Month
76.44%
increased by 3.84%
Analysis last updated: Saturday, August 15, 2026 at 07:43 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Apr 3, 2017 to Aug 14, 2026Model Insight
The news-impact curve is shifted (γ = -0.63) so that positive returns raise next-day volatility more than negative returns of the same size. Volatility rises more after gains than after losses, the reverse of the usual leverage effect and rare among risky assets.
σ
AGARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.1694 | 9.57*** |
α ARCH Response to squared shocks | 0.1203 | 14.65*** |
β GARCH Volatility persistence | 0.8437 | 78.28*** |
γ leverage Additional response to negative shocks | -0.6335 | -3.08*** |
Persistence:
0.964
Half-life:
19 days
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