Jane Street

Jane Street is a global quantitative trading firm founded in 2000 in New York, and it also invests directly in technology companies. Its core business is systematic trading and liquidity provision across global markets, combining mathematical modelling with proprietary technology to manage risk and provide liquidity. The firm trades on more than 200 venues across 45 countries.

The company employs over 3,000 people across five offices worldwide. Its technical work spans quantitative finance, functional programming, machine learning, programmable hardware, mathematical modelling, risk management, and high-frequency and algorithmic trading technology.

Jane Street was established by four founders - traders from Susquehanna and an IBM developer - working from a small New York office. The firm describes its culture as collaborative, with tight feedback loops between traders, researchers, and engineers, and places weight on quantitative thinking and intellectual rigour.