The head of the European Union’s securities and markets regulator told market participants last week that the success of sweeping regulatory reforms depends upon the implementation of a single rulebook for financial markets and supervisory convergence between the bloc’s 28 Member States.

Steven Maijoor, chairman of the European Securities and Markets Authority, told the attendees of the International Capital Markets Association annual meeting that the pace of changes to regulations in the wake of the financial crisis has been โ€œunprecedented.โ€