Susquehanna International Group (SIG)

Susquehanna was founded in 1987 by a group of traders who had begun on the floor of the Philadelphia Stock Exchange. It remains privately held and is headquartered in Bala Cynwyd, Pennsylvania, with a global operating footprint.

SIG combines market making, proprietary and systematic trading, quantitative research, machine learning, and trading technology. Its trading activities span almost every major financial product, while its careers materials emphasize the integration of traders, researchers, and engineers.

The firm is especially associated with options and derivatives expertise, probability-based decision-making, game theory, and structured training for trading and quantitative roles. Its broader investment activities include Susquehanna Growth Equity, which was founded in 2006 and invests capital supplied by SIG.