Created in 1998, STOXX indices are designed to provide a comprehensive representation of European equity markets. They are managed by STOXX Ltd, a company owned by Deutsche Börse Group and created in 2019 by the combination of STOXX, DAX and Axioma. STOXX's flagship index, the STOXX Europe 600 comprises 600 major companies across 17 European countries. It is widely recognised as a barometer of Europe's overall economic health, covering a range of company sizes and sectors. The Euro STOXX 50 covers the 50 largest companies in the Eurozone by market capitalisation. In addition to these major indices, STOXX offers a wide range of indices, including sector indices, sustainability indices, and small and medium-sized enterprise (SME) indices. STOXX also offers indices focused on responsible and sustainable investment, such as the ESG-X indices. In 2000, STOXX was the first index provider to implement free float market capitalisation in all its indices. The STOXX indices are therefore calculated on the basis of free-float-adjusted market capitalisation (to take into account only publicly available shares and provide a more accurate representation of market value). The STOXX indices provide valuable insights into the European economy, including economic growth, sector trends and investor confidence. Their components are therefore regularly revised to reflect changes in the market, ensuring that the indices remain current and relevant.