The development of multivariate generalized autoregressive conditionally heteroscedastic (MGARCH) models from the original univariate specifications represented a major step forward in the modelling of time series. MGARCH models permit time-varying conditional covariances as well as variances,...

We consider the stock performance of America's 100 Best Corporate Citizens following the annual survey by Business Ethics. We examine both possible short-term announcement effects around the time of the survey's publication, and whether longer-term returns are higher for firms that are listed as...

This paper will show how the relatively voluminous surviving records about exchange rates in the middle ages can help to illuminate the much murkier question of medieval interest rates. We will first explain how the medieval FX market operated and its links to the money market. Next, we will set...