FTSE operates the well known FTSE 100 Index and FTSE 250 Index as well as over 100,000 other indices, including 600 real-time indices. There are currently seven main groups of indices: Global Equity, Regional and Partner, Fixed Income, Real Estate, Alternative Investment, Responsible Investment, and Investment Strategy. Fees from the use of index information and associated services generate revenues necessary to continue operations. FTSE has offices in London, New York, Paris, Frankfurt, Madrid, San Francisco, Beijing, Sydney, Tokyo, and Hong Kong. ( WikiPedia)
