Several aspects of GARCH(p, q) models that are relevant for empirical applications are investigated. In particular, it is noted that the inclusion of dummy variables as regressors can lead to multimodality in the GARCH likelihood. This invalidates standard inference on the estimated...

It is often taken as axiomatic that investors prefer high levels of regulation.  Yet companies have increasingly chosen to list on stock exchanges with lower regulatory requirements.  In this paper we analyse whether investors value high regulatory standards for quoted companies.  We use the...

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This is a preliminary draft of an Invited Symposium paper for the World Congress of the Econometric Society to be held in Seattle in August 2000. We discuss the strong connections between auction theory and standard economic theory, and argue that auction-theoretic tools and intuitions can...