V-Lab
Franklin Ohio Municipal Income ETF GJR-GARCH Volatility Analysis
Volatility prediction for Tuesday, September 29th, 2026
1 Day
9.71%
increased by 2.67%
1 Week
9.00%
increased by 1.96%
1 Month
7.09%
increased by 0.05%
Analysis last updated: Monday, September 28, 2026 at 09:46 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Nov 10, 2025 to Sep 25, 2026Model Insight
Volatility shocks decay with a half-life of 7 trading days, meaning a shock loses half its impact after approximately 7 days.
σ
GJR-GARCH Model
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Shock decay: Shocks decay with a 7-day half-life
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0051 | 0.73 |
| αARCH | 0.0000 | 0.00 |
| βGARCH | 0.8459 | 5.58*** |
| γleverage | 0.1255 | 0.94 |
0.909
Persistence7d
Half-lifeσ
GJR-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0051 | 0.73 |
α ARCH Response to squared shocks | 0.0000 | 0.00 |
β GARCH Volatility persistence | 0.8459 | 5.58*** |
γ leverage Additional response to negative shocks | 0.1255 | 0.94 |
Persistence:
0.909
Half-life:
7 days
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