V-Lab
US Dollar to Swiss Franc GAS-GARCH Student T Volatility Analysis
Volatility prediction for Monday, July 27th, 2026
1 Day
7.30%
decreased by 0.13%
1 Week
7.31%
decreased by 0.12%
1 Month
7.36%
decreased by 0.07%
Analysis last updated: Sunday, July 26, 2026 at 01:49 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 2, 1990 to Jul 24, 2026Model Insight
With persistence 0.999, volatility shocks have a half-life of 693 trading days (~2.7 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate. Returns follow a Student-t distribution with v = 2.84 degrees of freedom, capturing fatter tails than a normal distribution.
𝑓
GAS-GARCH-T Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.5457 | 9.87*** |
α ARCH Response to squared shocks | 0.0175 | 74.04*** |
β GARCH Volatility persistence | 0.9990 | |
ν DF Student-t tail thickness | 2.8360 | 180.66*** |
Persistence:
0.999
Half-life:
693 days
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