V-Lab
US Dollar to Swiss Franc GAS-GARCH Student T Volatility Analysis
Volatility prediction for Tuesday, September 29th, 2026
1 Day
6.66%
decreased by 0.03%
1 Week
6.67%
decreased by 0.02%
1 Month
6.72%
increased by 0.03%
Analysis last updated: Monday, September 28, 2026 at 07:10 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 2, 1990 to Sep 25, 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 = 2.83 degrees of freedom, capturing fatter tails than a normal distribution.
𝑓
GAS-GARCH-T Model
Tap to view equation
High persistence: persistence 0.999, shock half-life ~693 daysv = 2.83 · fat tails
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.5420 | 2.46** |
| αARCH | 0.0174 | 18.49*** |
| βGARCH | 0.9990 | 2,929.62*** |
| νDF | 2.8315 | 45.54*** |
0.999
Persistence693d
Half-life𝑓
GAS-GARCH-T Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.5420 | 2.46** |
α ARCH Response to squared shocks | 0.0174 | 18.49*** |
β GARCH Volatility persistence | 0.9990 | 2,929.62*** |
ν DF Student-t tail thickness | 2.8315 | 45.54*** |
Persistence:
0.999
Half-life:
693 days
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