The book is structured into seven chapters. We start with the first investment strategies that have characterised the asset management industry, typically based on diversification and on the manager's skills to select the best investment opportunities. Since then, academic research and the asset management industry have actively influenced each other by creating ever more sophisticated products and tools suitable for investors more involved in financial market trends. This path traverses the themes of the importance of the benchmark’s construction methodologies and passive investing that have experienced an extraordinary evolution to move ever closer to the active management schemes. Finally, the emphasis is placed on the issue of sustainable finance and the tools used by managers to offer investment products committed to the fight against climate change.