V-Lab
Sunstone Hotel Investors Inc EGARCH Volatility Analysis
Volatility prediction for Friday, October 2nd, 2026
1 Day
14.10%
decreased by 0.07%
1 Week
14.36%
increased by 0.19%
1 Month
15.40%
increased by 1.23%
Analysis last updated: Thursday, October 1, 2026 at 11:15 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 82 trading days (~0.3 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
Leverage: Negative returns increase volatility 142% more than positive returns
σ
EGARCH Model
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High persistence: persistence 0.992, shock half-life ~82 daysLeverage: Negative returns increase volatility 142% more than positive returns
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0161 | 2.21** |
| αARCH | 0.1314 | 7.96*** |
| βGARCH | 0.9916 | 400.82*** |
| γleverage | -0.0545 | -4.06*** |
0.992
Persistence82d
Half-lifeσ
EGARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0161 | 2.21** |
α ARCH Response to squared shocks | 0.1314 | 7.96*** |
β GARCH Volatility persistence | 0.9916 | 400.82*** |
γ leverage Additional response to negative shocks | -0.0545 | -4.06*** |
Persistence:
0.992
Half-life:
82 days
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