“(…) it is undeniable that the CVM has been building, throughout its fruitful activity, an administrative jurisprudence of the utmost importance. Whether in response to consultations or in decisions on sanctioning processes, the CVM has acted on the 'front line' of the law of publicly traded companies and the capital market. Thus, the study of such branches of law cannot today disregard the analysis of cases decided by the CVM. Indeed, it suffices to read the summary of this work to confirm this fact. There are listed cases dealing with matters of the utmost importance, such as: 'super-preferred' shares; share incorporations with part of the payment in cash; election of a member of the fiscal council by a minority shareholder; duty of diligence of the administrator of a publicly traded company; application of the business judgment rule in Brazilian law; transactions with 'related parties' and impediment to voting; characterization of private benefit; insider trading in financial institutions; price manipulation; churning; spoofing and layering, as new forms of price manipulation; retention of profits with Based on capital budgeting; and many others. The cases are presented in a relatively standardized way, followed by a critical analysis by the author. Setting a page limit guided the authors towards an objective and concise exposition. The cases narrated here and their analysis are extremely useful, as they convey to the reader a 'living' experience of law, confronting legal norms with the reality of the facts. Thus, it is with enthusiasm that I recommend this work.‘ Nelson Eizirik?