V-Lab
Global X Gold Yield ETF GAS-GARCH Student T Volatility Analysis
Volatility prediction for Tuesday, July 28th, 2026
1 Day
24.31%
decreased by 0.63%
1 Week
24.10%
decreased by 0.84%
1 Month
23.32%
decreased by 1.62%
Analysis last updated: Tuesday, July 28, 2026 at 09:22 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Dec 20, 2010 to Jul 24, 2026Model Insight
Volatility shocks decay with a half-life of 44 trading days, meaning a shock loses half its impact after approximately 44 days. Returns follow a Student-t distribution with v = 4.84 degrees of freedom, capturing fatter tails than a normal distribution.
𝑓
GAS-GARCH-T Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.0405 | 4.80*** |
α ARCH Response to squared shocks | 0.0549 | 21.95*** |
β GARCH Volatility persistence | 0.9842 | 295.92*** |
ν DF Student-t tail thickness | 4.8375 | 5.58*** |
Persistence:
0.984
Half-life:
44 days
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