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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

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

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graph of S&P 500 Scored & Screened Index (ESG) APMEM

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Feb 8, 2019 to Aug 7, 2026

Model 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

ParameterValuet-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