V-Lab
S&P 500 Scored & Screened Index (ESG) Asy. Power MEM Volatility Analysis
Volatility prediction for Tuesday, August 11th, 2026
1 Day
10.61%
decreased by 1.29%
1 Week
10.04%
decreased by 1.86%
1 Month
8.83%
decreased by 3.07%
Analysis last updated: Monday, August 10, 2026 at 11:09 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Feb 8, 2019 to Aug 7, 2026Model Insight
This asset exhibits a modest leverage effect: negative returns increase next-day volatility 29% more than equivalent positive returns. The volatility power δ = 0.50 sits below 2, so large shocks influence volatility less than quadratically, a more outlier-robust response than standard GARCH.
μ
APMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0651 | 24.35*** |
α ARCH Response to squared shocks | 0.2945 | 30.11*** |
β GARCH Volatility persistence | 0.6649 | 63.69*** |
γ leverage Additional response to negative shocks | 0.2458 | 12.72*** |
δ power Transformation power | 0.5000 | 9.66*** |
Persistence:
0.905
Half-life:
7 days
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