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V-Lab

CRA International Inc GAS-GARCH Student T Volatility Analysis

Volatility prediction for Monday, August 24th, 2026

1 Day

45.05%

decreased by 0.86%

1 Week

45.06%

decreased by 0.85%

1 Month

45.11%

decreased by 0.80%

Analysis last updated: Friday, August 21, 2026 at 09:43 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of CRA International Inc GAS-GARCH-T

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Apr 24, 1998 to Aug 21, 2026

Model Insight

Volatility shocks decay with a half-life of 40 trading days, meaning a shock loses half its impact after approximately 40 days. Returns follow a Student-t distribution with v = 3.44 degrees of freedom, capturing fatter tails than a normal distribution.

𝑓

GAS-GARCH-T Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

8.1864
4.04***
α

ARCH

Response to squared shocks

0.0559
25.08***
β

GARCH

Volatility persistence

0.9830
247.92***
ν

DF

Student-t tail thickness

3.4371
12.36***

Persistence:

0.983

Half-life:

40 days