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London Stock Exchange Group (LSEG) is a global financial markets infrastructure and data services company headquartered in London, United Kingdom. The company operates through several segments, including Capital Markets, Post Trade, and Data & Analytics. LSEG is known for its stock exchange services and also provides clearing, settlement, and risk management services through its subsidiaries. It was founded in 1801 and has acquired significant businesses, including Refinitiv, to expand its data and analytics capabilities. LSEG's competitive strengths lie in its comprehensive financial data offerings and diversified revenue streams across different market infrastructures.

Visa is the largest payment processor in the world. In fiscal 2025, it processed almost $17 trillion in total volume. Visa operates in over 200 countries and processes transactions in over 160 currencies. Its systems are capable of processing over 65,000 transactions per second.