V-Lab
iShares National AMT-Free Muni Bond ETF MF2-GARCH Volatility Analysis
Volatility prediction for Monday, July 27th, 2026
1 Day
4.98%
decreased by 0.24%
1 Week
4.97%
decreased by 0.25%
1 Month
4.92%
decreased by 0.30%
Analysis last updated: Friday, July 24, 2026 at 10:38 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Sep 10, 2007 to Jul 24, 2026Model Insight
This asset exhibits a notable leverage effect: negative returns increase next-day volatility 72% more than equivalent positive returns.
σ
MF2-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
m window Rolling window length | 111 | |
α ARCH Response to squared shocks | 0.1059 | 21.56*** |
β GARCH Volatility persistence | 0.8232 | 171.71*** |
γ leverage Additional response to negative shocks | 0.0762 | 11.93*** |
λ₁ tau intercept Baseline long-term coefficient | 0.0180 | 8.22*** |
λ₂ forecast adj. Forecast performance sensitivity | 0.7658 | 9.53*** |
λ₃ tau persistence Long-term factor persistence | 0.0000 | 0.00 |
Persistence:
0.967
Half-life:
21 days
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