V-Lab
Sam Holdings Corporation MEM Volatility Analysis
Volatility prediction for Wednesday, August 5th, 2026
1 Day
29.29%
decreased by 1.63%
1 Week
29.66%
decreased by 1.26%
1 Month
31.04%
increased by 0.12%
Analysis last updated: Wednesday, August 5, 2026 at 08:32 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 18, 2008 to Jul 31, 2026Model Insight
With persistence 0.993, volatility shocks have a half-life of 93 trading days (~0.4 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
μ
MEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0693 | 5.89*** |
α ARCH Response to squared shocks | 0.1445 | 34.77*** |
β GARCH Volatility persistence | 0.8481 | 194.11*** |
Persistence:
0.993
Half-life:
93 days
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