The 1990s were the scene of a process of profound transformations where the economic elite played an important role in the promotion, public support and implementation of many of the main measures. This more active involvement of the economic elite in a stage of implementation of reforms makes inescapable the question of the characteristics, actions and transformations of the sectors that controlled the main sources of economic power during that period. Why is it relevant to know the characteristics and behavior of the Argentine economic elite? Because it has a decisive influence on the process of accumulation, on the distribution of wealth, and on the direction of state action, by virtue of the economic power and political power they hold. Given the centrality of these actors and the relative lack of studies on them, this book proposes an exhaustive analysis from a sociological approach, with the certainty that the analysis of this experience gives us clues to understand the present.