V-Lab
iShares Russell 2000 ETF GARCH Volatility Analysis
Volatility prediction for Thursday, August 20th, 2026
1 Day
15.41%
decreased by 0.36%
1 Week
15.74%
decreased by 0.03%
1 Month
16.84%
increased by 1.07%
Analysis last updated: Wednesday, August 19, 2026 at 09:38 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
Volatility shocks decay with a half-life of 34 trading days, meaning a shock loses half its impact after approximately 34 days.
σ
GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0395 | 20.96*** |
α ARCH Response to squared shocks | 0.0876 | 35.93*** |
β GARCH Volatility persistence | 0.8925 | 330.41*** |
Persistence:
0.980
Half-life:
34 days
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