State Street Materials Select Sector SPDR ETF Spline-GARCH Volatility Analysis
Volatility prediction for Tuesday, April 21st, 2026
1 Day
17.79%
decreased by 0.48%
1 Week
17.97%
decreased by 0.30%
1 Month
18.59%
increased by 0.32%
Analysis last updated: Monday, April 20, 2026 at 09:49 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
| param | t-stat | |
|---|---|---|
| 1.3796 | 9.33 | |
| 0.0922 | 9.27 | |
| 0.8880 | 78.14 | |
| 0.0023 | 2.35 |
Estimation Period:
Dec 22, 1998 to Apr 17, 2026
Dec 22, 1998 to Apr 17, 2026
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