V-Lab
Range International Limited MEM Volatility Analysis
High-persistence model: shocks decay very slowly, so the theoretical long-run value may not be practically meaningful
Volatility prediction for Wednesday, September 2nd, 2026
1 Day
245.37%
decreased by 2.20%
1 Week
245.49%
decreased by 2.08%
1 Month
246.00%
decreased by 1.57%
Analysis last updated: Wednesday, September 2, 2026 at 05:54 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jul 22, 2016 to Aug 21, 2026Model Insight
Estimated persistence of 1.000 is at or above 1 (non-stationary): volatility shocks do not decay and the long-run variance is undefined, so long-horizon forecasts should be treated with caution.
μ
MEM Model
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High persistence: persistence 1.000 ≥ 1, shocks do not decay
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.1244 | 0.52 |
| αARCH | 0.0425 | 2.65*** |
| βGARCH | 0.9575 | 64.11*** |
1.000
Persistence-
Half-lifeμ
MEM Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.1244 | 0.52 |
α ARCH Response to squared shocks | 0.0425 | 2.65*** |
β GARCH Volatility persistence | 0.9575 | 64.11*** |
Persistence:
1.000
Half-life:
-
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