Galileo Resources PLC APARCH Volatility Analysis
Volatility prediction for Monday, July 20th, 2026
1 Day
137.18%
1 Week
134.76%
1 Month
126.52%
Analysis last updated: Sunday, July 19, 2026 at 04:36 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Sep 28, 2011 to Jul 17, 2026Model Insight
This asset shows a rare inverse leverage effect: positive returns raise next-day volatility 67% more than negative returns. Volatility rises more after gains than after losses, the reverse of the usual leverage effect and uncommon among risky assets. The volatility power δ = 1.62 sits below 2, so large shocks influence volatility less than quadratically, a more outlier-robust response than standard GARCH.
APARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.4327 | 6.42*** |
α ARCH Response to squared shocks | 0.0646 | 9.20*** |
β GARCH Volatility persistence | 0.9143 | 113.28*** |
γ leverage Additional response to negative shocks | -0.1567 | -3.48*** |
δ power Transformation power | 1.6164 | 13.08*** |
Persistence:
0.972
Half-life:
25 days
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