Thomson Reuters is the result of the $17.6 billion megamerger of Canada's Thomson and the United Kingdom's Reuters Group in 2008. In 2021, Thomson Reuters completed the sale of Refinitiv to LSE Group. Thomson Reuters' three largest segments are its legal professionals, Tax and accounting, and corporates segments. Legal professionals is about 44% of the firm's revenue and 50% of the firm's adjusted EBITDA. Tax and accounting makes up about 13% of the firm's revenue and EBITDA. Corporates, which consists of legal professionals and tax and accounting products sold to corporations, makes up about one quarter of the firm's revenue and EBITDA.