1Y US Treasury CMT 1 Year GAS-GARCH Student T Volatility Analysis
Volatility prediction for Monday, November 9th, 2026
1 Day
18.31%
1 Week
18.40%
1 Month
18.74%
Analysis last updated: Saturday, November 7, 2026 at 05:01 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 1, 1990 to Nov 6, 2026Model Insight
With persistence 0.997, volatility shocks have a half-life of 213 trading days (~0.8 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate. Returns follow a Student-t distribution with v = 6.91 degrees of freedom, capturing fatter tails than a normal distribution.
GAS-GARCH-T Model
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| Param | Value | t-stat |
|---|---|---|
| ωlong-run | 3.6825 | 2.08** |
| αscore | 0.0944 | 16.56*** |
| βpersistence | 0.9968 | 639.36*** |
| νDF | 6.9130 | 5.07*** |
0.997
Persistence213d
Half-lifeGAS-GARCH-T Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω long-run Long-run variance given a price move | 3.6825 | 2.08** |
α score Weight on the scaled score | 0.0944 | 16.56*** |
β persistence Volatility persistence | 0.9968 | 639.36*** |
ν DF Student-t tail thickness | 6.9130 | 5.07*** |
Persistence:
0.997
Half-life:
213 days
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