V-Lab
Roundhill UNH WeeklyPay ETF GJR-GARCH Volatility Analysis
Volatility prediction for Monday, July 27th, 2026
1 Day
49.89%
unchanged at 0.00%
1 Week
49.89%
unchanged at 0.00%
1 Month
49.89%
unchanged at 0.00%
Analysis last updated: Saturday, July 25, 2026 at 02:18 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Dec 3, 2025 to Jul 24, 2026Hessian SE
Model 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
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.9849 | 0.01 |
α ARCH Response to squared shocks | 0.0000 | 0.00 |
β GARCH Volatility persistence | 0.9003 | 0.05 |
γ leverage Additional response to negative shocks | 0.0000 | 0.00 |
Persistence:
0.900
Half-life:
7 days
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