This paper offers a systematized and updated view of competition between exchanges. It is divided in two parts: In the first part, we describe the recent reforms in stock exchanges and the main forces driving the development of competition. The second part surveys research done on stock exchanges.

This paper uses a simple model of mean-variance asset pricing with transaction costs to analyze one of the main empirical phenomena in stock market competition in the last years, the decrease of transaction costs. We endogenize transaction costs as variables strategically influenced by stock...