The Markets in Financial Instruments Directive (MiFID II) / Markets in Financial Instruments Regulation (MiFIR) and delegated acts, or in short the ‘MiFID II/MiFIR package’ have strengthened the EU regime for investor protection, and market transparency and efficiency. The rules have substantially affected the way banks and investment firms provide investment services and perform trading activities. Overall, this legal framework constitutes a cornerstone of EU financial markets’ regulation, which contributes to the strengthening of a single market for investment services and activities. The implications are remarkable both from a practical and a theoretical perspective. This course, taught by experts, practitioners, and scholars, will address the main aspects of MiFID II and MiFIR. The evolving context sees sustainable finance, crowdfunding and FinTech moving front and centre, as well as Brexit and third-country equivalence challenges.