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Invesco National AMT-Free Municipal Bond ETF Zero Slope Spline-GARCH Volatility Analysis
Volatility Prediction for Friday, February 13th, 2026:3.66% (+0.11%)
Analysis last updated: Thursday, February 12, 2026 at 10:44 PM UTC
Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Invesco National AMT-Free Municipal Bond ETF S0GARCH
paramt-stat
ω1.59306.56
α0.16826.26
β0.750625.34
γ1-0.1726-0.61
γ20.17680.32
γ30.18180.38
γ4-0.3517-1.18
γ50.32151.73
γ6-0.3714-2.29
γ70.69704.05
γ8-0.9388-4.74
γ90.58723.78
Estimation Period:
Oct 18, 2007 to Feb 6, 2026
Impact of return on volatility tomorrow
Volatility Forecasts