V-Lab
Ross Stores Inc GJR-GARCH Volatility Analysis
Volatility prediction for Wednesday, August 26th, 2026
1 Day
31.34%
decreased by 0.53%
1 Week
31.49%
decreased by 0.38%
1 Month
32.09%
increased by 0.22%
Analysis last updated: Tuesday, August 25, 2026 at 09:31 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 2, 1990 to Aug 21, 2026Model Insight
With persistence 0.998, volatility shocks have a half-life of 284 trading days (~1.1 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
Leverage: Negative returns increase volatility 367% more than positive returns
σ
GJR-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0289 | 8.57*** |
α ARCH Response to squared shocks | 0.0134 | 12.59*** |
β GARCH Volatility persistence | 0.9595 | 850.64*** |
γ leverage Additional response to negative shocks | 0.0492 | 15.43*** |
Persistence:
0.998
Half-life:
284 days
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