V-Lab
Smart Powerr Corp MEM Volatility Analysis
Volatility prediction for Monday, September 7th, 2026
1 Day
290.35%
decreased by 6.25%
1 Week
290.10%
decreased by 6.50%
1 Month
289.11%
decreased by 7.49%
Analysis last updated: Saturday, September 5, 2026 at 09:26 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jul 23, 2001 to Sep 4, 2026Model Insight
With persistence 0.998, volatility shocks have a half-life of 452 trading days (~1.8 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
μ
MEM Model
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High persistence: persistence 0.998, shock half-life ~452 days
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.2238 | 0.88 |
| αARCH | 0.0470 | 4.41*** |
| βGARCH | 0.9515 | 70.75*** |
0.998
Persistence452d
Half-lifeμ
MEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.2238 | 0.88 |
α ARCH Response to squared shocks | 0.0470 | 4.41*** |
β GARCH Volatility persistence | 0.9515 | 70.75*** |
Persistence:
0.998
Half-life:
452 days
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