State Street Consumer Staples Select Sector SPDR ETF EGARCH Volatility Analysis
Volatility prediction for Tuesday, July 21st, 2026
1 Day
18.05%
decreased by 0.49%
1 Week
17.89%
decreased by 0.65%
1 Month
17.37%
decreased by 1.17%
Analysis last updated: Monday, July 20, 2026 at 09:52 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Dec 22, 1998 to Jul 17, 2026Model Insight
This asset exhibits a strong leverage effect: negative returns increase next-day volatility 330% more than equivalent positive returns.
σ
EGARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | -0.0027 | -1.73* |
α ARCH Response to squared shocks | 0.1657 | 41.89*** |
β GARCH Volatility persistence | 0.9755 | 835.21*** |
γ leverage Additional response to negative shocks | -0.1031 | -28.07*** |
Persistence:
0.976
Half-life:
28 days
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