S&P 500 Index GJR-GARCH Volatility Analysis
Volatility prediction for Monday, May 18th, 2026
1 Day
11.98%
increased by 2.87%
1 Week
12.20%
increased by 3.09%
1 Month
12.94%
increased by 3.83%
Analysis last updated: Saturday, May 16, 2026 at 12:33 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
| param | t-stat | |
|---|---|---|
| 0.0214 | 20.56 | |
| 0.0038 | 1.53 | |
| 0.8975 | 416.47 | |
| 0.1597 | 29.58 |
Estimation Period:
Jan 1, 1990 to May 15, 2026
Jan 1, 1990 to May 15, 2026
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