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V-Lab

S&P Composite 1500 Index MF2-GARCH Volatility Analysis

Volatility prediction for Monday, September 21st, 2026

1 Day

12.05%

decreased by 0.41%

1 Week

12.62%

increased by 0.16%

1 Month

14.17%

increased by 1.71%

Analysis last updated: Saturday, September 19, 2026 at 12:02 AM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of S&P Composite 1500 Index MF2-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Oct 31, 1994 to Sep 18, 2026

Model Insight

This asset exhibits a strong leverage effect: volatility responds almost entirely to negative shocks. The ARCH response to positive shocks is negligible.

σ

MF2-GARCH Model

Tap to view equation

Leverage: volatility responds almost entirely to negative shocks
ParamValuet-stat
mwindow61
αARCH0.0000
0.00
βGARCH0.8379
58.12***
γleverage0.2139
12.15***
λ₁tau intercept0.0119
1.82*
λ₂forecast adj.0.0533
2.41**
λ₃tau persistence0.9364
35.08***

0.945

Persistence

12d

Half-life
σ

MF2-GARCH Model

Tap to view equation

ParameterValuet-statistic
m

window

Rolling window length

61
α

ARCH

Response to squared shocks

0.0000
0.00
β

GARCH

Volatility persistence

0.8379
58.12***
γ

leverage

Additional response to negative shocks

0.2139
12.15***
λ₁

tau intercept

Baseline long-term coefficient

0.0119
1.82*
λ₂

forecast adj.

Forecast performance sensitivity

0.0533
2.41**
λ₃

tau persistence

Long-term factor persistence

0.9364
35.08***

Persistence:

0.945

Half-life:

12 days