Ecuador Guayaquil Stock Exchange BVG GJR-GARCH Volatility Analysis
Volatility prediction for Friday, October 23rd, 2026
1 Day
15.94%
decreased by 0.18%
1 Week
15.91%
decreased by 0.21%
1 Month
15.78%
decreased by 0.34%
Analysis last updated: Friday, October 23, 2026 at 09:04 PM UTC
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News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 3, 1994 to Oct 15, 2026Model Insight
With persistence 0.994, volatility shocks have a half-life of 115 trading days (~0.5 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
σ
GJR-GARCH Model
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High persistence: persistence 0.994, shock half-life ~115 days
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0039 | 3.00*** |
| αARCH | 0.0188 | 2.67*** |
| βGARCH | 0.9734 | 186.36*** |
| γleverage | 0.0036 | 0.31 |
0.994
Persistence115d
Half-lifeσ
GJR-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0039 | 3.00*** |
α ARCH Response to squared shocks | 0.0188 | 2.67*** |
β GARCH Volatility persistence | 0.9734 | 186.36*** |
γ leverage Additional response to negative shocks | 0.0036 | 0.31 |
Persistence:
0.994
Half-life:
115 days
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