American Express Co GAS-GARCH Student T Volatility Analysis
Volatility prediction for Monday, April 27th, 2026
1 Day
29.15%
decreased by 0.07%
1 Week
29.23%
increased by 0.01%
1 Month
29.51%
increased by 0.29%
Analysis last updated: Friday, April 24, 2026 at 10:17 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
| param | t-stat | |
|---|---|---|
| 5.0166 | 4.89 | |
| 0.0684 | 56.24 | |
| 0.9947 | 905.91 | |
| 5.5442 | 14.70 |
Estimation Period:
Jan 2, 1990 to Apr 24, 2026
Jan 2, 1990 to Apr 24, 2026
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