State Street SPDR Portfolio Long Term Corporate Bond ETF Zero Slope Spline-GARCH Volatility Analysis
Volatility Prediction for Thursday, February 12th, 2026:8.09% (-0.15%)
Parameter Estimates
| param | t-stat | |
|---|---|---|
| 0.8902 | 5.37 | |
| 0.0868 | 4.35 | |
| 0.8380 | 27.23 | |
| -0.1324 | -1.65 | |
| 0.2430 | 2.07 | |
| -0.2435 | -3.03 | |
| 0.3423 | 4.83 | |
| -0.3851 | -6.37 | |
| 0.2285 | 5.34 |
Estimation Period:
Mar 11, 2009 to Feb 6, 2026
Mar 11, 2009 to Feb 6, 2026
News Impact Curve
Volatility Forecasts
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