Nikkei Stock Average Volatility Index Zero Slope Spline-GARCH Volatility Analysis
Volatility prediction for Monday, May 18th, 2026
1 Day
108.17%
decreased by 6.19%
1 Week
117.28%
increased by 2.92%
1 Month
128.60%
increased by 14.24%
Analysis last updated: Saturday, May 23, 2026 at 01:54 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
| param | t-stat | |
|---|---|---|
| 2.3016 | 4.67 | |
| 0.1898 | 7.55 | |
| 0.6142 | 16.77 | |
| 0.1560 | 2.80 | |
| -0.1679 | -2.19 | |
| 0.0103 | 0.22 | |
| 0.0157 | 0.38 | |
| -0.0017 | -0.04 | |
| -0.0511 | -1.08 | |
| 0.0678 | 1.05 | |
| -0.0494 | -0.75 | |
| 0.0484 | 0.96 | |
| -0.0478 | -1.35 |
Estimation Period:
Jan 3, 1990 to May 15, 2026
Jan 3, 1990 to May 15, 2026
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