AT&T Inc Zero Slope Spline-GARCH Volatility Analysis
Volatility prediction for Monday, March 23rd, 2026
1 Day
26.00%
increased by 0.69%
1 Week
26.15%
increased by 0.15%
1 Month
26.60%
increased by 0.60%
Analysis last updated: Saturday, March 21, 2026 at 12:54 AM UTC
Parameter Estimates
| param | t-stat | |
|---|---|---|
| 0.9285 | 7.51 | |
| 0.0734 | 8.87 | |
| 0.8802 | 66.58 | |
| 0.0282 | 1.21 | |
| -0.0063 | -0.18 | |
| -0.1049 | -4.24 | |
| 0.1488 | 6.74 | |
| -0.0979 | -4.84 | |
| 0.0753 | 3.12 | |
| -0.0679 | -2.49 | |
| 0.0231 | 1.03 |
Estimation Period:
Jan 2, 1990 to Mar 20, 2026
Jan 2, 1990 to Mar 20, 2026
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