The STOXX Sector indices are available for global markets as well as for Europe, the Eurozone and Eastern Europe. Using the market standard ICB – Industry Classification Benchmark, companies are categorised according to their primary source of revenue. This categorisation guarantees a professional and accurate classification of companies in their respective business environments. There are four levels of classification ranging from broad to very detailed: 10 industries are broken down into 19 supersectors, 41 sectors and 114 subsectors.