Patsystems plc is a UK-based company that provides electronic trading software and services to the derivatives community. The company was founded in 1994 and has offices in London, Chicago, New York, Singapore, Tokyo, Sydney, and Hong Kong. Patsystems offers a range of trading solutions for futures, options, and equities, including front-end trading platforms, risk management tools, and exchange connectivity. The company's clients include banks, brokers, hedge funds, and proprietary trading firms.