V-Lab
VanEck Solana ETF GJR-GARCH Volatility Analysis
Volatility prediction for Monday, September 21st, 2026
1 Day
70.74%
increased by 10.51%
1 Week
70.54%
increased by 10.31%
1 Month
70.09%
increased by 9.86%
Analysis last updated: Saturday, September 19, 2026 at 02:21 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Nov 17, 2025 to Sep 18, 2026Model Insight
Volatility shocks decay with a half-life of 7 trading days, meaning a shock loses half its impact after approximately 7 days.
σ
GJR-GARCH Model
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Shock decay: Shocks decay with a 7-day half-life
| Param | Value | t-stat |
|---|---|---|
| ωconst | 1.8304 | 1.08 |
| αARCH | 0.0410 | 0.73 |
| βGARCH | 0.8022 | 7.07*** |
| γleverage | 0.1231 | 0.64 |
0.905
Persistence7d
Half-lifeσ
GJR-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.8304 | 1.08 |
α ARCH Response to squared shocks | 0.0410 | 0.73 |
β GARCH Volatility persistence | 0.8022 | 7.07*** |
γ leverage Additional response to negative shocks | 0.1231 | 0.64 |
Persistence:
0.905
Half-life:
7 days
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