V-Lab
Schwab Short-Term U.S. Treasury ETF MF2-GARCH Volatility Analysis
Volatility prediction for Monday, September 14th, 2026
1 Day
1.65%
decreased by 0.08%
1 Week
1.65%
decreased by 0.08%
1 Month
1.62%
decreased by 0.11%
Analysis last updated: Friday, September 11, 2026 at 11:51 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Aug 5, 2010 to Sep 11, 2026Stationarity Enforced
Model Insight
Volatility shocks decay with a half-life of 12 trading days, meaning a shock loses half its impact after approximately 12 days.
σ
MF2-GARCH Model
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Shock decay: Shocks decay with a 12-day half-life
| Param | Value | t-stat |
|---|---|---|
| mwindow | 86 | |
| αARCH | 0.0731 | 4.10*** |
| βGARCH | 0.8806 | 40.95*** |
| γleverage | -0.0162 | -0.61 |
| λ₁tau intercept | 0.0002 | 1.75* |
| λ₂forecast adj. | 0.9793 | 19.60*** |
| λ₃tau persistence | 0.0000 | 0.00 |
0.946
Persistence12d
Half-lifeσ
MF2-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
m window Rolling window length | 86 | |
α ARCH Response to squared shocks | 0.0731 | 4.10*** |
β GARCH Volatility persistence | 0.8806 | 40.95*** |
γ leverage Additional response to negative shocks | -0.0162 | -0.61 |
λ₁ tau intercept Baseline long-term coefficient | 0.0002 | 1.75* |
λ₂ forecast adj. Forecast performance sensitivity | 0.9793 | 19.60*** |
λ₃ tau persistence Long-term factor persistence | 0.0000 | 0.00 |
Persistence:
0.946
Half-life:
12 days
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