The main aim of the article is to introduce a contemporary sociological interpretation of financial markets. Financial markets became the subject of sociological analysis due to their increasing importance for the economy as well as a consequence of significant changes that are linked with their quick growth. One result of these changes is growing influence of the institutions of collective investment leading to the transformation of management's responsibility, processes of financial collectivization and creation of a new, invisible source of power. One of the analytical tools to examine the nature and dynamics of these changes is Michel Foucault's conception of formation of disciplinary society. The article also pays attention to some of the factors that participate in financial markets functioning but are not sufficiently reflected in the sociological research such as the social and political impact of economics and significance of the social networks.