In both the subprime crisis and the euro-area crisis, regulators imposed bans on short sales, aimed mainly at preventing stock price turbulence from destabilizing financial institutions. Contrary to the regulators’ intentions, financial institutions whose stocks were banned experienced greater...

The European Monetary Union (EMU) has been the single most important policy-induced innovation in the international financial system since the collapse of the Bretton-Woods system. By eliminating exchange rate risk, EMU has eliminated a key obstacle to financial integration. But while a single...