Many studies have shown that the correlation of stock portfolio returns is higher during market downturns, while very few of them offer an explanation for the causes of such an asymmetry. This article examines potential fundamental causes for the phenomenon. We find that such an asymmetry is...

This paper examines the effects of a semi-transparency event, introduction of the electronic trading system (EBS), on the market quality of a typical dealership market - the FX market. We find that increasing transparency leads to lower market volatility and higher trading volume, but the...