In this paper, we look back at the XIX century France to shed light on effect of competition in the stock exchange industry. During the XIX century the Paris financial centre plays a central role in the French financial markets. Nevertheless, six organized regional exchanges do exist along all the second half of the century. A recent literature started to study the complex functioning of the Paris financial centre as well as the interaction between its two components, the official Paris Bourse and its OTC rival, the Coulisse. Nevertheless, a very small literature is devoted to the regional French exchanges. By studying the interactions between Paris and Lyon, we find that, after the 1881-1882 boom and burst, the Lyon Stock Exchange has to s...