Regression modelEconometrics / time series
Panel EGARCH — Exponential GARCH for Panel Data
Panel EGARCH extends Nelson's (1991) Exponential GARCH model to a panel setting, allowing conditional variance to evolve asymmetrically over time for each cross-sectional unit. The log specification ensures non-negative variance without parameter constraints, and the leverage term distinguishes whether negative shocks amplify volatility more than positive ones of equal magnitude.
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Sources
- Nelson, D. B. (1991). Conditional heteroskedasticity in asset returns: A new approach. Econometrica, 59(2), 347–370. DOI: 10.2307/2938260 ↗
- Tsay, R. S. (2010). Analysis of Financial Time Series (3rd ed.). Wiley. ISBN: 978-0470414354