GraniteShares YieldBoost HIMS ETF GJR-GARCH Volatility Analysis
Volatility prediction for Friday, October 23rd, 2026
1 Day
20.25%
decreased by 0.41%
1 Week
20.35%
decreased by 0.31%
1 Month
20.66%
increased by 0.00%
Analysis last updated: Friday, October 23, 2026 at 02:18 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Dec 2, 2025 to Oct 16, 2026Model Insight
Volatility shocks decay with a half-life of 16 trading days, meaning a shock loses half its impact after approximately 16 days.
σ
GJR-GARCH Model
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Shock decay: Shocks decay with a 16-day half-life
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0765 | 1.13 |
| αARCH | 0.0033 | 0.05 |
| βGARCH | 0.9138 | 17.00*** |
| γleverage | 0.0823 | 0.96 |
0.958
Persistence16d
Half-lifeσ
GJR-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0765 | 1.13 |
α ARCH Response to squared shocks | 0.0033 | 0.05 |
β GARCH Volatility persistence | 0.9138 | 17.00*** |
γ leverage Additional response to negative shocks | 0.0823 | 0.96 |
Persistence:
0.958
Half-life:
16 days
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