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V-Lab

CRA International Inc GAS-GARCH Student T Volatility Analysis

Volatility prediction for Monday, July 27th, 2026

1 Day

48.19%

decreased by 1.14%

1 Week

48.10%

decreased by 1.23%

1 Month

47.79%

decreased by 1.54%

Analysis last updated: Friday, July 24, 2026 at 09:36 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 Jul 24, 2026

Model Insight

Volatility shocks decay with a half-life of 41 trading days, meaning a shock loses half its impact after approximately 41 days. Returns follow a Student-t distribution with v = 3.43 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

8.2073
4.02***
α

ARCH

Response to squared shocks

0.0559
25.11***
β

GARCH

Volatility persistence

0.9830
247.31***
ν

DF

Student-t tail thickness

3.4302
12.39***

Persistence:

0.983

Half-life:

41 days