This collection of essays has been compiled in honour of Professor Eddy Wymeersch on the occasion of his retirement as professor at Ghent University. His main international academic peers explore developments on the crossroads of company law and financial regulation in Europe and the United States, providing a unique view on the dynamics of regulatory competition in an era of economic globalisation, whether in the fields of rulemaking, organising the mobility of capital or the enforcement of rules. The deepening of European financial integration and the transatlantic regulatory dialogue has generated new paradigms of rule-setting in a multinational framework and reinforced the need to develop adequate instruments for co-operation between regulators. Regulators increasingly use concepts such as equivalence or mutual recognition to regulate cross-border relations.