V-Lab
Pngs Reva Diamond Jewellery Ltd Asy. Power MEM Volatility Analysis
Volatility prediction for Wednesday, August 5th, 2026
1 Day
119.18%
1 Week
111.29%
1 Month
91.73%
Analysis last updated: Wednesday, August 5, 2026 at 07:08 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Mar 4, 2026 to Jul 31, 2026Model Insight
This asset shows a rare inverse leverage effect: positive returns raise next-day volatility 225% 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 = 1.07 sits below 2, so large shocks influence volatility less than quadratically, a more outlier-robust response than standard GARCH.
APMEM Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.3080 | 1.81* |
α ARCH Response to squared shocks | 0.1315 | 6.15*** |
β GARCH Volatility persistence | 0.8192 | 25.26*** |
γ leverage Additional response to negative shocks | -0.5001 | -6.73*** |
δ power Transformation power | 1.0727 | 3.08*** |
Persistence:
0.926
Half-life:
9 days
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