This book provides a comprehensive and expert examination of the Markets in Financial Instruments Directive II, which comes into force in January 2018 and will have a major impact on investment firms and financial markets. It offers detailed guidance on interpretation of MiFID II, its measure and aims which include: to increase transparency; better protect investors; reinforce confidence; address unregulated areas; and ensure that supervisors are granted adequate powers to fulfil their tasks. After a thorough overview of the various innovative features of the new legislative framework in comparison with the former MiFID, the book's chapters are grouped thematically to cover the following areas: general aspects; investment firms and investment services; trading; supervision and enforcement; and reform perspectives. Offering high-quality analysis of both the theoretical and practical aspects of MiFID II, this book is an essential guide to this major EU legislation. It brings together the expert opinions of leading practitioners and legal and economic scholars with access to practice, providing a variety of perspectives on the new regime and the likely effect of the increased regulation.