CBOE S&P 500 9-Day Volatility Index GJR-GARCH Volatility Analysis
Volatility prediction for Friday, May 22nd, 2026
1 Day
164.68%
decreased by 1.87%
1 Week
166.28%
decreased by 0.27%
1 Month
171.22%
increased by 4.67%
Analysis last updated: Friday, May 22, 2026 at 11:30 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
| param | t-stat | |
|---|---|---|
| 5.0000 | 8.93 | |
| 0.0627 | 12.19 | |
| 0.9323 | 232.78 | |
| -0.0627 | -6.58 |
Estimation Period:
Jan 3, 2011 to May 15, 2026
Jan 3, 2011 to May 15, 2026
Other CBOE S&P 500 9-Day Volatility Index Analyses
Other GJR-GARCH Analyses on Volatility Indices