S&P 100 Index GARCH Volatility Analysis
Volatility prediction for Tuesday, May 12th, 2026
1 Day
14.55%
decreased by 0.73%
1 Week
14.66%
decreased by 0.62%
1 Month
15.03%
decreased by 0.25%
Analysis last updated: Monday, May 11, 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 | |
|---|---|---|
| 0.0189 | 20.81 | |
| 0.1001 | 43.28 | |
| 0.8848 | 391.31 |
Estimation Period:
Jan 1, 1990 to May 8, 2026
Jan 1, 1990 to May 8, 2026
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