V-Lab
S&P GSCI Nickel Spot Index EGARCH Volatility Analysis
Volatility prediction for Tuesday, October 6th, 2026
1 Day
20.97%
decreased by 0.23%
1 Week
21.31%
increased by 0.11%
1 Month
22.66%
increased by 1.46%
Analysis last updated: Monday, October 5, 2026 at 11:09 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
Jan 8, 1993 to Oct 2, 2026Model Insight
Volatility shocks decay with a half-life of 55 trading days, meaning a shock loses half its impact after approximately 55 days.
σ
EGARCH Model
Tap to view equation
Shock decay: Shocks decay with a 55-day half-life
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0234 | 4.24*** |
| αARCH | 0.1126 | 5.71*** |
| βGARCH | 0.9875 | 316.91*** |
| γleverage | 0.0158 | 1.15 |
0.987
Persistence55d
Half-lifeσ
EGARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0234 | 4.24*** |
α ARCH Response to squared shocks | 0.1126 | 5.71*** |
β GARCH Volatility persistence | 0.9875 | 316.91*** |
γ leverage Additional response to negative shocks | 0.0158 | 1.15 |
Persistence:
0.987
Half-life:
55 days
Other S&P GSCI Nickel Spot Index Analyses
Other EGARCH Analyses on Commodities