JSE Securities South African Volatility Index Zero Slope Spline-GARCH Volatility Analysis
Volatility prediction for Friday, May 22nd, 2026
1 Day
79.13%
increased by 16.55%
1 Week
76.14%
increased by 13.56%
1 Month
71.13%
increased by 8.55%
Analysis last updated: Saturday, May 23, 2026 at 01:52 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
| param | t-stat | |
|---|---|---|
| 0.6657 | 4.99 | |
| 0.1214 | 4.35 | |
| 0.7166 | 12.65 | |
| -0.1454 | -1.93 | |
| 0.2758 | 2.40 | |
| -0.2770 | -2.65 | |
| 0.3195 | 3.00 | |
| -0.3248 | -3.71 | |
| 0.2030 | 3.52 |
Estimation Period:
Feb 1, 2007 to Apr 4, 2025
Feb 1, 2007 to Apr 4, 2025
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