In an ever-changing world, the profitability of companies is no longer the sole concern of management. Under pressure from the media, a growing number of companies are incorporating a social responsibility component. Indeed, a company's image and its impact on the world are now inseparable from its growth and profitability. Many articles mention the link between CSR and corporate performance, without establishing a direct connection between the two. The aim of this book is to examine how CSR can influence the various financial indicators of SBF120 companies. In the first part, we examine the theory behind these two concepts. In the second part, we use SPSS software to analyze financial data and ESG disclosure scores gathered from Bloomberg, a source of information for financial market professionals. The third section illustrates the difficulty of establishing a direct correlation between all financial indicators and the CSR projects symbolized by the evolution of ESG variables.