<p>This book analyzes the legal system for the protection of retail investors under the European Union law of investment services. &nbsp;It identifies the regulatory leitmotiv driving the EU lawmaker and ascertains whether and to what extent such a system is self-sufficient, using a set of EU-made and EU-enforced rules that is essentially different and autonomous from the domestic legal orders.&nbsp; In this regard, the book takes a double perspective: comparative and intra-firm. Given the federal dimension of the US legal system and, thus, the "role-model" it plays vis-à-vis the EU, the book compares the two systems. To fully highlight the existing gaps and measure how self-sufficient the EU system is against its American counterpart, the<i>&nbsp;</i>Union/Federal&nbsp;level as such is analyzed - <i>i.e.</i>, detached from the national (in EU terms) and State (in US terms) level. <i>Regulating Investor Protection under EU Law</i> also showcases the unique intra-firm perspective from a European investment firm and analyzes how EU-produced public-law rules become a set of compliance requirements for investment services providers. This "<i>within-the-firm</i>" angle gauges the self-sufficiency of the EU system of retail investor protection from the standpoint of an EU-regulated entity. The book is intended for both compliance professionals and academic scholars interested in this topic while also including illustrative sections intended to provide a broader regulatory view for less-experienced readers.</p><p></p><p></p><p></p><p></p>