PSI 20 Portuguese Stock Index Zero Slope Spline-GARCH Volatility Analysis
Volatility prediction for Tuesday, May 26th, 2026
1 Day
13.92%
decreased by 0.34%
1 Week
14.38%
increased by 0.12%
1 Month
15.68%
increased by 1.42%
Analysis last updated: Tuesday, May 26, 2026 at 01:06 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
| param | t-stat | |
|---|---|---|
| 0.8023 | 5.46 | |
| 0.1497 | 10.19 | |
| 0.8034 | 49.66 | |
| 0.0929 | 3.57 | |
| -0.1948 | -5.37 | |
| 0.1864 | 7.97 | |
| -0.1173 | -5.03 | |
| 0.0121 | 0.50 | |
| 0.0473 | 2.03 | |
| -0.0345 | -2.08 |
Estimation Period:
Dec 30, 1992 to May 22, 2026
Dec 30, 1992 to May 22, 2026
Other PSI 20 Portuguese Stock Index Analyses
Other Zero Slope Spline-GARCH Analyses on Equity Indices