S&P 500 Equal Weight Index (EWI) GAS-GARCH Student T Volatility Analysis
Volatility prediction for Thursday, April 16th, 2026
1 Day
14.82%
decreased by 0.91%
1 Week
14.89%
decreased by 0.84%
1 Month
15.14%
decreased by 0.59%
Analysis last updated: Wednesday, April 15, 2026 at 11:01 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
| param | t-stat | |
|---|---|---|
| 1.2894 | 7.10 | |
| 0.0847 | 40.64 | |
| 0.9903 | 664.19 | |
| 8.3870 | 6.00 |
Estimation Period:
Jan 1, 1990 to Apr 10, 2026
Jan 1, 1990 to Apr 10, 2026
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