through its acquisition of the Frank Russell Company in 2015, London Stock Exchange Group combined FTSE Group with Russell Indexes to form FTSE Russell, now one of the largest index providers in the world. Mergent: on 21 November 2016 LSEG announced plans to acquire Mergent Inc, provider of business and financial information on public and private companies. The Yield Book and Citi Fixed Income Indices: on 30 May 2017 LSEG announced the acquisition of The Yield Book and Citi Fixed Income Indices, leading providers of fixed income analytics systems, for $685 million. AAX: on 22 January 2019, LSEG announced that its Millennium Exchange matching engine technology had been selected by digital asset exchange AAX, marking the first time its solutions are applied in the digital assets economy. See also Market maker Alternative Investment Market List of stock exchanges List of stock exchanges in the United Kingdom, the British Crown Dependencies and United Kingdom Overseas Territories List of stock exchanges in the Commonwealth of Nations References External links Group 1698 establishments in England Economy of London Financial services companies based in the City of London Multinational companies based in the City of London Stock exchanges in the United Kingdom Financial services companies established in the 17th century Organizations established in 1698