Giampiero Gallo

Overview

Giampiero M. Gallo is an econometrician at the University of Florence (Dipartimento di Statistica "Giuseppe Parenti"). His research focuses on financial econometrics, volatility modeling, and the analysis of high-frequency financial data. He is best known for co-developing the Multiplicative Error Model (MEM) with Robert Engle.

Key Contributions / Features

• Multiplicative Error Model (Engle-Gallo 2006) — "A Multiple Indicators Model for Volatility Using Intra-Daily Data," Journal of Econometrics 131 (2006) 3–27. Co-developed the MEM framework ($x_t = \mu_t \varepsilon_t$, $\varepsilon_t \sim \text{Gamma}$) and the Multiple Indicators Model (MIM) combining absolute returns, daily high-low range, and realized volatility in a joint cross-equation system for the S&P 500. See Multiplicative Error Model and Multiple Indicators Model.
• Research on the conditional autoregressive range (CARR) model and related specifications for range-based volatility estimation.

Related

• Multiplicative Error Model and Multiple Indicators Model
• GARCH and BEKK-GARCH
• Robert Engle