V-Lab
US Dollar to Chinese Renminbi GAS-GARCH Student T Volatility Analysis
Volatility prediction for Wednesday, September 9th, 2026
1 Day
24.08%
decreased by 1.04%
1 Week
24.15%
decreased by 0.97%
1 Month
24.43%
decreased by 0.69%
Analysis last updated: Tuesday, September 8, 2026 at 07:11 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Sep 14, 2005 to Sep 4, 2026Model 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
| Param | Value | t-stat |
|---|---|---|
| ωconst | 7.4234 | 3.32*** |
| αARCH | 0.0414 | 33.31*** |
| βGARCH | 0.9987 | 2,406.44*** |
| νDF | 2.0006 |
0.999
Persistence522d
Half-life𝑓
GAS-GARCH-T Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 7.4234 | 3.32*** |
α ARCH Response to squared shocks | 0.0414 | 33.31*** |
β GARCH Volatility persistence | 0.9987 | 2,406.44*** |
ν DF Student-t tail thickness | 2.0006 |
Persistence:
0.999
Half-life:
522 days
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