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V-Lab

Columbia Research Enhanced Small Cap ETF GAS-GARCH Student T Volatility Analysis

Volatility prediction for Monday, July 27th, 2026

1 Day

15.23%

decreased by 0.19%

1 Week

15.37%

decreased by 0.05%

1 Month

15.75%

increased by 0.33%

Analysis last updated: Saturday, July 25, 2026 at 02:28 AM UTC

Date Range:

from

to

6M ·

All

graph of Columbia Research Enhanced Small Cap ETF GAS-GARCH-T

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Dec 11, 2025 to Jul 24, 2026

Model Insight

Volatility shocks decay with a half-life of 13 trading days, meaning a shock loses half its impact after approximately 13 days. Returns follow a Student-t distribution with v = 12.36 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

1.0894
3.08***
α

ARCH

Response to squared shocks

0.0263
0.60
β

GARCH

Volatility persistence

0.9487
20.20***
ν

DF

Student-t tail thickness

12.3641
0.05

Persistence:

0.949

Half-life:

13 days