Price pressure induced by the short-seller's systematic unwinding and rewinding short positions around the weekend allegedly contributes to the weekend effect. On the Hong Kong Stock Exchange, short-selling was prohibited before 1994 and was allowed only for some stocks after 1994. Exploiting...

We examine the behavior of call options during the ex-dividend period of their underlying stocks. The evidence is inconsistent with the predictions of rational exercise policy; a significant fraction of the open interest remains unexercised. The potential profits to the option writers trigger a...

Contest functions (alternatively, contest success functions) determine probabilities of winning and losing as a function of contestants’ eort. They are used widely in many areas of economics that employ contest games, from tournaments and rent-seeking to conflict and sports. We first examine...

Contest functions (alternatively, contest success functions) determine probabilities of winning and losing as a function of contestants' effort. They are used widely in many areas of economics that employ contest games, from tournaments and rent-seeking to conflict and sports. We first examine...

We survey empirical studies on the development and effects of increased computerization across equity, foreign exchange, derivatives, and fixed-income markets. While the changes in the trading process due to computerization in less liquid markets such as the corporate bond market have been...