V-Lab
Russell 1000 Value Index Asy. MEM Volatility Analysis
Volatility prediction for Tuesday, September 8th, 2026
1 Day
8.67%
increased by 0.10%
1 Week
9.14%
increased by 0.57%
1 Month
10.61%
increased by 2.04%
Analysis last updated: Saturday, September 5, 2026 at 12:05 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
May 12, 2000 to Sep 4, 2026Model Insight
This asset exhibits a strong leverage effect: negative returns increase next-day volatility 210% more than equivalent positive returns.
μ
AMEM Model
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Leverage: Negative returns increase volatility 210% more than positive returns
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0236 | 5.42*** |
| αARCH | 0.0921 | 5.37*** |
| βGARCH | 0.7889 | 61.90*** |
| γleverage | 0.1937 | 6.19*** |
0.978
Persistence31d
Half-lifeμ
AMEM Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0236 | 5.42*** |
α ARCH Response to squared shocks | 0.0921 | 5.37*** |
β GARCH Volatility persistence | 0.7889 | 61.90*** |
γ leverage Additional response to negative shocks | 0.1937 | 6.19*** |
Persistence:
0.978
Half-life:
31 days
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