PSI 20 Portuguese Stock Index GAS-GARCH Student T Volatility Analysis
Volatility prediction for Friday, May 22nd, 2026
1 Day
15.98%
decreased by 1.12%
1 Week
16.07%
decreased by 1.03%
1 Month
16.41%
decreased by 0.69%
Analysis last updated: Friday, May 22, 2026 at 02:15 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
| param | t-stat | |
|---|---|---|
| 2.0423 | 5.47 | |
| 0.0963 | 60.05 | |
| 0.9945 | 1,005.56 | |
| 6.6660 | 12.86 |
Estimation Period:
Dec 30, 1992 to May 15, 2026
Dec 30, 1992 to May 15, 2026
Other PSI 20 Portuguese Stock Index Analyses
Other GAS-GARCH Student T Analyses on Equity Indices