V-Lab
REA Group Ltd Zero Slope Spline-GARCH Volatility Analysis
Volatility prediction for Wednesday, October 7th, 2026
1 Day
30.12%
decreased by 2.03%
1 Week
30.27%
decreased by 1.88%
1 Month
30.49%
decreased by 1.66%
Analysis last updated: Wednesday, October 7, 2026 at 06:10 PM UTC
Press Delete or Backspace to remove this series.
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Dec 1, 1999 to Oct 2, 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 4 trading days.
τ
Zero Slope Spline-GARCH Model
Tap to view equation
Time-varying baseline: volatility reverts to a slowly-shifting spline trend
| Param | Value | t-stat |
|---|---|---|
| ωconst | 1.6594 | 8.28*** |
| αARCH | 0.1186 | 7.04*** |
| βGARCH | 0.7042 | 18.46*** |
Spline Coefficients
K=9
| γ1 | -0.3161 | -4.89*** |
| γ2 | 0.4870 | 4.54*** |
| γ3 | -0.2479 | -3.04*** |
| γ4 | 0.1903 | 3.08*** |
| γ5 | -0.2277 | -4.33*** |
| γ6 | 0.2172 | 4.24*** |
| γ7 | -0.1363 | -2.65*** |
| γ8 | 0.0241 | 0.44 |
| γ9 | 0.0135 | 0.29 |
0.823
Persistence4d
Half-lifeτ
Zero Slope Spline-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.6594 | 8.28*** |
α ARCH Response to squared shocks | 0.1186 | 7.04*** |
β GARCH Volatility persistence | 0.7042 | 18.46*** |
Spline Coefficients
K=9
| γ1 | -0.3161 | -4.89*** |
| γ2 | 0.4870 | 4.54*** |
| γ3 | -0.2479 | -3.04*** |
| γ4 | 0.1903 | 3.08*** |
| γ5 | -0.2277 | -4.33*** |
| γ6 | 0.2172 | 4.24*** |
| γ7 | -0.1363 | -2.65*** |
| γ8 | 0.0241 | 0.44 |
| γ9 | 0.0135 | 0.29 |
Persistence:
0.823
Half-life:
4 days
Other REA Group Ltd Analyses
Other Zero Slope Spline-GARCH Analyses on International Equities