Traditional quantitative approaches to portfolio construction have drawbacks for investors or advisors who combine multiple active managers in typically producing large numbers of disperse positions. We develop a new methodology for sequentially allocating to active funds that results in...

Restrictions on transaction price changes are a feature of many security markets. This paper analyzes the impact of such price continuity rules on price dynamics and examines possible rationales for their existence. Contrary to popular belief, continuity rules need not reduce price efficiency,...

Previous studies of insider trading have examined the profitability to executives of their stock trading with a view to evaluating the informational efficiency of securities markets. The authors examine empirically whether insider trading raises or lowers firm value. To correctly identify the...

Opening mechanisms play a crucial role in information aggregation following the overnight nontrading period. This article examines the process of price discovery at the New York Stock Exchange single-price opening auction. We develop a theoretical model to explain the determinants of the opening...

It is commonly believed that fragmented security markets have a natural tendency to consolidate. This article examines this belief focusing on the effect of disclosing trading information to market participants. We show that large traders who place multiple trades can benefit from the absence of...

This paper analyzes the effect on equity prices of large-block transactions negotiated ‘upstairs’. We develop a model of the upstairs market which yields testable hypotheses. We investigate these hypotheses with unique data for 5,625 block trades in 1985-1992. Unlike previous studies, all...