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V-Lab

Russell Midcap Index Asy. MEM Volatility Analysis

Volatility prediction for Friday, September 11th, 2026

1 Day

11.63%

increased by 0.10%

1 Week

12.01%

increased by 0.48%

1 Month

13.18%

increased by 1.65%

Analysis last updated: Saturday, September 12, 2026 at 12:48 AM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Russell Midcap Index AMEM

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Mar 1, 2004 to Sep 10, 2026

Model Insight

This asset exhibits a strong leverage effect: negative returns increase next-day volatility 161% more than equivalent positive returns.

μ

AMEM Model

Tap to view equation

Leverage: Negative returns increase volatility 161% more than positive returns
ParamValuet-stat
ωconst0.0326
7.95***
αARCH0.1150
4.56***
βGARCH0.7654
46.78***
γleverage0.1846
4.89***

0.973

Persistence

25d

Half-life
μ

AMEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0326
7.95***
α

ARCH

Response to squared shocks

0.1150
4.56***
β

GARCH

Volatility persistence

0.7654
46.78***
γ

leverage

Additional response to negative shocks

0.1846
4.89***

Persistence:

0.973

Half-life:

25 days