CBOE S&P 500 9-Day Volatility Index Zero Slope Spline-GARCH Volatility Analysis
Volatility prediction for Wednesday, May 13th, 2026
1 Day
222.46%
decreased by 9.52%
1 Week
233.05%
increased by 1.07%
1 Month
241.26%
increased by 9.28%
Analysis last updated: Wednesday, May 13, 2026 at 11:38 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
| param | t-stat | |
|---|---|---|
| 1.0161 | 6.91 | |
| 0.1224 | 3.68 | |
| 0.5509 | 6.10 | |
| 0.1329 | 1.06 | |
| -0.1479 | -0.80 | |
| 0.0417 | 0.29 | |
| -0.1168 | -0.71 | |
| 0.2054 | 1.20 | |
| -0.3419 | -2.20 | |
| 0.5269 | 4.07 | |
| -0.4400 | -5.33 |
Estimation Period:
Jan 3, 2011 to May 8, 2026
Jan 3, 2011 to May 8, 2026
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