PSI 20 Portuguese Stock Index Zero Slope Spline-GARCH Volatility Analysis
Volatility prediction for Monday, June 15th, 2026
1 Day
13.91%
decreased by 0.01%
1 Week
14.39%
increased by 0.47%
1 Month
15.71%
increased by 1.79%
Analysis last updated: Friday, June 12, 2026 at 07:00 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
| param | t-stat | |
|---|---|---|
| 0.8131 | 5.57 | |
| 0.1497 | 10.19 | |
| 0.8031 | 49.63 | |
| 0.0940 | 3.66 | |
| -0.1957 | -5.44 | |
| 0.1862 | 8.02 | |
| -0.1180 | -5.11 | |
| 0.0137 | 0.56 | |
| 0.0460 | 1.96 | |
| -0.0341 | -2.05 |
Estimation Period:
Dec 30, 1992 to Jun 12, 2026
Dec 30, 1992 to Jun 12, 2026
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