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V-Lab

Russell 1000 Growth Index Asy. Power MEM Volatility Analysis

Volatility prediction for Monday, August 17th, 2026

1 Day

22.72%

decreased by 3.73%

1 Week

21.55%

decreased by 4.90%

1 Month

18.28%

decreased by 8.17%

Analysis last updated: Saturday, August 15, 2026 at 12:08 AM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Russell 1000 Growth Index APMEM

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

May 12, 2000 to Aug 14, 2026

Model Insight

This asset exhibits a notable leverage effect: negative returns increase next-day volatility 87% more than equivalent positive returns. The volatility power δ = 1.07 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

0.0372
34.18***
α

ARCH

Response to squared shocks

0.1936
50.42***
β

GARCH

Volatility persistence

0.7895
212.57***
γ

leverage

Additional response to negative shocks

0.2848
22.61***
δ

power

Transformation power

1.0658
25.72***

Persistence:

0.945

Half-life:

12 days