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V-Lab

S&P Composite 1500 Index Asy. MEM Volatility Analysis

Volatility prediction for Thursday, July 16th, 2026

1 Day

12.33%

decreased by 0.18%

1 Week

12.61%

increased by 0.10%

1 Month

13.51%

increased by 1.00%

Analysis last updated: Thursday, July 16, 2026 at 12:05 AM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of S&P Composite 1500 Index AMEM

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Dec 28, 2004 to Jul 10, 2026

Model Insight

This asset exhibits a strong leverage effect: negative returns increase next-day volatility 214% more than equivalent positive returns.

μ

AMEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0298
29.03***
α

ARCH

Response to squared shocks

0.1052
13.56***
β

GARCH

Volatility persistence

0.7563
149.89***
γ

leverage

Additional response to negative shocks

0.2248
20.55***

Persistence:

0.974

Half-life:

26 days