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S&P Composite 1500 Index GARCH Volatility Analysis

Volatility prediction for Tuesday, November 3rd, 2026

1 Day

13.59%

decreased by 0.53%

1 Week

13.76%

decreased by 0.36%

1 Month

14.37%

increased by 0.25%

Analysis last updated: Tuesday, November 3, 2026 at 12:04 AM UTC

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Date Range:

from

11/02/2024

to

11/02/2026

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of S&P Composite 1500 Index GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Oct 31, 1994 to Oct 30, 2026

Model Insight

Volatility shocks decay with a half-life of 42 trading days, meaning a shock loses half its impact after approximately 42 days.

σ

GARCH Model

Tap to view equation

Shock decay: Shocks decay with a 42-day half-life
ParamValuet-stat
ωconst0.0217
5.21***
αARCH0.1086
10.14***
βGARCH0.8749
84.00***

0.983

Persistence

42d

Half-life
σ

GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0217
5.21***
α

ARCH

Response to squared shocks

0.1086
10.14***
β

GARCH

Volatility persistence

0.8749
84.00***

Persistence:

0.983

Half-life:

42 days