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	Modello EGARCH Non Lineare	Modello GARCH (Previsione della Volatilità)
Campo	Econometria	Econometria
Famiglia	Regression model	Regression model
Anno di origine	1991	1986
Ideatore	Daniel B. Nelson	Tim Bollerslev
Tipo	Conditional volatility model	Conditional volatility model
Fonte seminale	Nelson, D. B. (1991). Conditional heteroskedasticity in asset returns: A new approach. Econometrica, 59(2), 347–370.	Bollerslev, T. (1986). Generalized Autoregressive Conditional Heteroskedasticity. Journal of Econometrics, 31(3), 307–327.
Alias	NL-EGARCH, nonlinear exponential GARCH, asymmetric EGARCH, NEGARCH	GARCH, GARCH(1,1), conditional volatility model, GARCH Modeli (Oynaklık Tahmini)
Correlati	5	5
Sintesi	The Nonlinear EGARCH model extends Nelson's (1991) Exponential GARCH by allowing the news impact function to take a flexible nonlinear form, capturing asymmetric and nonlinear responses of conditional volatility to past shocks. It is widely used in financial econometrics to model leverage effects and complex volatility dynamics in asset returns.	The Generalized Autoregressive Conditional Heteroskedasticity (GARCH) model, introduced by Tim Bollerslev in 1986, models the time-varying conditional variance of a financial time series. It captures volatility clustering and the ARCH effect, and is the standard tool for estimating risk and volatility in return series.