V-Lab
iShares Euro High Yield Corporate Bond USD Hedged ETF Zero Slope Spline-GARCH Volatility Analysis
Volatility prediction for Monday, September 14th, 2026
1 Day
4.21%
decreased by 0.16%
1 Week
4.24%
decreased by 0.13%
1 Month
4.35%
decreased by 0.02%
Analysis last updated: Saturday, September 12, 2026 at 02:17 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Apr 3, 2012 to Sep 11, 2026Model Insight
This model fits a time-varying baseline (a spline), so volatility mean-reverts toward a slowly-shifting long-run level rather than a constant. Short-run deviations decay with a half-life of 54 trading days.
τ
Zero Slope Spline-GARCH Model
Tap to view equation
Time-varying baseline: volatility reverts to a slowly-shifting spline trend
| Param | Value | t-stat |
|---|---|---|
| ωconst | 1.2359 | 2.93*** |
| αARCH | 0.0864 | 4.77*** |
| βGARCH | 0.9010 | 47.19*** |
Spline Coefficients
K=10
| γ1 | -0.9467 | -1.72* |
| γ2 | 1.9891 | 2.34** |
| γ3 | -2.0281 | -2.96*** |
| γ4 | 1.5478 | 2.29** |
| γ5 | -0.9293 | -1.31 |
| γ6 | 0.9511 | 1.13 |
| γ7 | -2.4105 | -0.95 |
| γ8 | 5.2911 | 0.90 |
| γ9 | -6.3771 | -1.04 |
| γ10 | 3.8430 | 1.40 |
0.987
Persistence54d
Half-lifeτ
Zero Slope Spline-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.2359 | 2.93*** |
α ARCH Response to squared shocks | 0.0864 | 4.77*** |
β GARCH Volatility persistence | 0.9010 | 47.19*** |
Spline Coefficients
K=10
| γ1 | -0.9467 | -1.72* |
| γ2 | 1.9891 | 2.34** |
| γ3 | -2.0281 | -2.96*** |
| γ4 | 1.5478 | 2.29** |
| γ5 | -0.9293 | -1.31 |
| γ6 | 0.9511 | 1.13 |
| γ7 | -2.4105 | -0.95 |
| γ8 | 5.2911 | 0.90 |
| γ9 | -6.3771 | -1.04 |
| γ10 | 3.8430 | 1.40 |
Persistence:
0.987
Half-life:
54 days
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