V-Lab
1Y US Treasury 1 Year Zero Coupon Yield Continuously Compounded GJR-GARCH Volatility Analysis
High-persistence model: shocks decay very slowly, so the theoretical long-run value may not be practically meaningful
Volatility prediction for Monday, July 20th, 2026
1 Day
16.60%
1 Week
16.73%
1 Month
17.22%
Analysis last updated: Wednesday, July 22, 2026 at 03:05 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 2, 1990 to Jul 17, 2026Model Insight
With persistence 1.000, volatility shocks have a half-life of 1386294 trading days (~5501.2 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
Leverage: Negative returns increase volatility 119% more than positive returns
GJR-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0083 | 11.89*** |
α ARCH Response to squared shocks | 0.0422 | 17.51*** |
β GARCH Volatility persistence | 0.9327 | 448.39*** |
γ leverage Additional response to negative shocks | 0.0503 | 11.42*** |
Persistence:
1.000
Half-life:
1386294 days
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