V-Lab
iShares Russell 2000 ETF GJR-GARCH Volatility Analysis
Volatility prediction for Monday, August 17th, 2026
1 Day
14.15%
decreased by 0.31%
1 Week
14.61%
increased by 0.15%
1 Month
16.09%
increased by 1.63%
Analysis last updated: Friday, August 14, 2026 at 10:25 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
May 29, 2000 to Aug 14, 2026Model Insight
This asset exhibits a strong leverage effect: volatility responds almost entirely to negative shocks. The ARCH response to positive shocks is negligible.
σ
GJR-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0450 | 17.77*** |
α ARCH Response to squared shocks | 0.0124 | 5.94*** |
β GARCH Volatility persistence | 0.8986 | 420.30*** |
γ leverage Additional response to negative shocks | 0.1321 | 22.43*** |
Persistence:
0.977
Half-life:
30 days
Other iShares Russell 2000 ETF Analyses
Other GJR-GARCH Analyses on ETFs