TRI vs IBKR Comparison

Thomson Reuters is a leading global provider of business information services, delivering trusted data, technology, and expertise to professionals across legal, tax, accounting, risk, compliance, and the news and media sectors. Headquartered in Toronto, Canada, the company combines deep domain knowledge with data and software solutions to help clients make informed decisions, manage complexity, and drive efficiency. Thomson Reuters serves legal and accounting/tax professionals, corporations, and governments worldwide, but around 75% of revenue is generated in the US. The company is known for flagship products such as Westlaw, UltraTax CS, and Reuters News.

Interactive Brokers is a large, automated, retail and institutional brokerage that boasted nearly $780 billion in customer equity at the end of 2025. The company cut its teeth as a market maker, introducing US financial markets to automated and algorithmic training before expanding into brokerage services in 1993. The firm has a wide-ranging client base, with its best-in-class order execution and extremely low margin lending rates catering to a sophisticated audience of hedge funds, proprietary traders, and introducing brokers that account for about 45% of the firm's commissions. With operations spanning more than 170 electronic exchanges, 40 countries, and 29 currencies, Interactive Brokers caters to a global clientele, with more than 80% of active accounts sitting outside the US.