It owns the London Stock Exchange (on which it is also listed), Refinitiv, LSEG Technology,[4] FTSE Russell, and majority stakes in LCH and Tradeweb.

[9] On 16 September 2009, the London Stock Exchange Group agreed to acquire Millennium Information Technologies, Ltd., a Sri Lankan-based software company specialising in trading systems, for US$30m (£18m).

[11] The deal, subject to government approval would create the world's largest exchange operator for mining stocks.

This was a cash and stock bid of CA$3.7 billion, launched in the hope of blocking the LSE Group's takeover of TMX.

[18][19][20] On 26 June 2014, the LSE announced it had agreed to buy Frank Russell Co., making it one of the largest providers of index services.

[23] On 25 February 2017, the London Stock Exchange Group PLC stated it would not sell its fixed-income trading platform in Italy to Deutsche Börse AG, to appease anti-trust concerns.

[26] Shortly thereafter, on 11 September 2019, LSEG itself became the target of a £32 billion bid by the Hong Kong Exchanges and Clearing, subject to abandoning its plans to buy Refinitiv.

The current Chief Executive is former Goldman Sachs banker David Schwimmer, who was appointed in 2018, replacing Xavier Rolet, who was ousted in November 2017.

[33] Principal subsidiaries areas follows:[36]: 164 incorporation votes held Following the merger with Borsa Italiana, the group is Europe's leading equities business, with 48% of the FTSEurofirst 100 by market capitalisation and with the most liquid order book by value and volume traded.