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US Dollar to Chinese Renminbi GAS-GARCH Student T Volatility Analysis

Volatility prediction for Tuesday, September 29th, 2026

1 Day

24.21%

decreased by 1.28%

1 Week

24.30%

decreased by 1.19%

1 Month

24.66%

decreased by 0.83%

Analysis last updated: Monday, September 28, 2026 at 07:10 PM UTC

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graph of US Dollar to Chinese Renminbi GAS-GARCH-T

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Sep 14, 2005 to Sep 25, 2026

Model Insight

The estimated Student-t degrees of freedom v = 2.00 sit at the infinite-variance boundary (v → 2): the model is attributing extreme moves to heavy tails rather than to volatility, so the volatility scale is unreliable here. See the boundary-parameters flag.

𝑓

GAS-GARCH-T Model

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Unreliable tails: v = 2.00 sits at the infinite-variance boundary
ParamValuet-stat
ωconst8.9626
3.31***
αARCH0.0414
33.33***
βGARCH0.9987
2,394.88***
νDF2.0005

0.999

Persistence

520d

Half-life
𝑓

GAS-GARCH-T Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

8.9626
3.31***
α

ARCH

Response to squared shocks

0.0414
33.33***
β

GARCH

Volatility persistence

0.9987
2,394.88***
ν

DF

Student-t tail thickness

2.0005

Persistence:

0.999

Half-life:

520 days