V-Lab
Sunstone Hotel Investors Inc Zero Slope Spline-GARCH Volatility Analysis
Volatility prediction for Friday, October 2nd, 2026
1 Day
15.99%
increased by 0.17%
1 Week
16.55%
increased by 0.73%
1 Month
18.55%
increased by 2.73%
Analysis last updated: Thursday, October 1, 2026 at 11:16 PM UTC
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News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Oct 21, 2004 to Sep 25, 2026Model Insight
With persistence 0.992, volatility shocks have a half-life of 85 trading days (~0.3 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
τ
Zero Slope Spline-GARCH Model
Tap to view equation
High persistence: persistence 0.992, shock half-life ~85 days
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.8359 | 5.03*** |
| αARCH | 0.0791 | 7.72*** |
| βGARCH | 0.9127 | 94.74*** |
Spline Coefficients
K=1
| γ1 | 0.0000 | 0.02 |
0.992
Persistence85d
Half-lifeτ
Zero Slope Spline-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.8359 | 5.03*** |
α ARCH Response to squared shocks | 0.0791 | 7.72*** |
β GARCH Volatility persistence | 0.9127 | 94.74*** |
Spline Coefficients
K=1
| γ1 | 0.0000 | 0.02 |
Persistence:
0.992
Half-life:
85 days
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