V-Lab
CBOE Goldman Sachs Volatility Index EGARCH Volatility Analysis
Volatility prediction for Wednesday, September 23rd, 2026
1 Day
80.30%
decreased by 2.81%
1 Week
81.12%
decreased by 1.99%
1 Month
83.92%
increased by 0.81%
Analysis last updated: Wednesday, September 23, 2026 at 11:40 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 7, 2011 to Sep 18, 2026Model Insight
This asset shows a rare inverse leverage effect: volatility responds almost entirely to positive returns, rising far more after gains than after losses. This is the reverse of the usual leverage effect, rare among risky assets.
σ
EGARCH Model
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Inverse leverage: volatility responds almost entirely to positive returns
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.1081 | 1.45 |
| αARCH | 0.0911 | 4.43*** |
| βGARCH | 0.9699 | 67.65*** |
| γleverage | 0.1254 | 5.16*** |
0.970
Persistence23d
Half-lifeσ
EGARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.1081 | 1.45 |
α ARCH Response to squared shocks | 0.0911 | 4.43*** |
β GARCH Volatility persistence | 0.9699 | 67.65*** |
γ leverage Additional response to negative shocks | 0.1254 | 5.16*** |
Persistence:
0.970
Half-life:
23 days
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