S&P MidCap 400 Index GJR-GARCH Volatility Analysis
Volatility prediction for Friday, May 22nd, 2026
1 Day
15.68%
decreased by 0.70%
1 Week
15.80%
decreased by 0.58%
1 Month
16.23%
decreased by 0.15%
Analysis last updated: Thursday, May 21, 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 | |
|---|---|---|
| 0.0265 | 23.96 | |
| 0.0210 | 11.27 | |
| 0.8907 | 478.62 | |
| 0.1381 | 27.62 |
Estimation Period:
Jan 1, 1990 to May 15, 2026
Jan 1, 1990 to May 15, 2026
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