This paper assesses the role of correlation dynamics in mean-variance sector allocation. A correlation timing framework is deployed to evaluate dynamic strategies against a static constant covariance strategy and the nonparametric RiskMetrics covariance model. We find using sector portfolios in...

The current study points out that the derivation of the aggregate demand curve based on theory of consumer behavior has a fundamental flaw, from which the Giffen product has to be inferior good and has been always regarded as an exception of law of demand is therefore not convincing. The current...

Aiming at the wrong recognition over one century that Giffen goods are special examples of demand law and Giffen goods are rare, this paper strictly proves that the demand curve of any Giffen goods can only slopes lower right and any commodity that complies with the demand law would probably...

We analyze the cross-border propagation of systemic risk in the international sovereign debt market. Using daily data on CDS spreads for 67 sovereign borrowers from 2002 to 2013 we define sovereign credit events as those in which the spread widens by more than 99.9% of all spread changes within...