Invesco DB Agriculture Fund Spline-GARCH Volatility Analysis
Volatility prediction for Monday, October 19th, 2026
1 Day
11.79%
decreased by 0.31%
1 Week
11.90%
decreased by 0.20%
1 Month
12.28%
increased by 0.18%
Analysis last updated: Friday, October 16, 2026 at 10:35 PM UTC
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News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 5, 2007 to Oct 16, 2026Model Insight
This model fits a time-varying baseline (a spline), so volatility mean-reverts toward a slowly-shifting long-run level rather than a constant. Short-run deviations decay with a half-life of 55 trading days.
τ
Spline-GARCH Model
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Time-varying baseline: volatility reverts to a slowly-shifting spline trend
| Param | Value | t-stat |
|---|---|---|
| ωconst | 1.3717 | 5.46*** |
| αARCH | 0.0611 | 7.74*** |
| βGARCH | 0.9264 | 104.55*** |
Spline Coefficients
K=1
| γ1 | 0.0057 | 2.25** |
0.988
Persistence55d
Half-lifeτ
Spline-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.3717 | 5.46*** |
α ARCH Response to squared shocks | 0.0611 | 7.74*** |
β GARCH Volatility persistence | 0.9264 | 104.55*** |
Spline Coefficients
K=1
| γ1 | 0.0057 | 2.25** |
Persistence:
0.988
Half-life:
55 days
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