In this paper we develop a testing and modelling procedure for describing the long-term volatility movements over very long daily return series. For this purpose we assume that volatility is multiplicatively decomposed into a conditional and an unconditional component as in Amado and Teräsvirta...

The present study investigates possible existence of time varying risk premia in Brazilian real, Chinese yuan; Cypriot pound, Danish krone, Eurozone euro, French franc, Indian rupee, Japanese yen, Pakistani rupee, and British pound forward foreign exchange rates against US dollar. Exchange rates...

This paper uses a multivariate GARCH framework to examine how the 2008 moratorium on short-selling affected the systemic return-risk across three firms at the center of the subprime mortgage crises: Fannie Mae and Freddie Mac, the two largest buyers of US home mortgages; and American...

This paper analyses the long-memory properties of a high-frequency financial time series dataset. It focuses on temporal aggregation and other features of the data, and how they might affect the degree of dependence of the series. Fractional integration or I(d) models are estimated with a...