Susquehanna International Group (SIG) is a privately held global financial services firm known for its quantitative approach to trading. Founded in 1987 and headquartered near Philadelphia, Pennsylvania ([[United States of America (USA)]]), SIG specializes in trading and investing in various financial products, including equities, options, fixed income, and commodities. They are recognized as a leading market maker in options and have a significant presence in global financial markets. SIG combines sophisticated technology, quantitative research, and experienced traders to execute their strategies. They also engage in venture capital and private equity investments, reflecting their diverse interests in the financial world.