This paper uses time-varying second moments to investigate exchange rate exposure betas. Using a BEKK-GARCH(1,21)-M model, time-varying exchange rate exposure betas are obtained with explicit focus on the non-orthogonality between exchange rate changes and market returns. We look into certain...

The Heteroskedastic Mixture Model (HMM) of Lamoureux, and Lastrapes (1990) is extended, relaxing the restriction imposed on the mean i.e. μ_t-1=0 . Instead, an exogenous variable r_m, along with its vector β_m, that predicts return r_t is introduced to examine the hypothesis that the volume is a...

This paper examines the conditional time-varying currency betas from five developed markets and four emerging markets. We employ a modified trivariate BEKK-GARCH-in-mean model of Engle and Kroner (1995) to estimate the time-varying conditional variance and covariance of returns of stock index,...

This paper examines the conditional time‐varying currency betas from five developed markets and four emerging markets. We employ a modified trivariate BEKK‐GARCH‐in‐mean model of Engle and Kroner (1995) to estimate the time‐varying conditional variance and covariance of returns of...