Jane Street is a leading global quantitative proprietary trading firm and liquidity provider founded in 2000 by Michael Jenkins, Tim Reynolds, Rob Granieri, and Marc Gerstein. Initially a small New York-based team, it has grown to over 3,000 employees across six major financial hubs worldwide, including New York, London, Hong Kong, Amsterdam, Chicago, and Singapore[1][2][7][8]. The firm trades a broad spectrum of asset classes—equities, bonds, options, futures, commodities, ETFs, currencies, and cryptocurrency—on more than 200 electronic venues spanning 45 countries[1][2][3][8]. Jane Street is renowned for its deep quantitative expertise, combining advanced mathematical models, machine learning, and functional programming to solve complex trading challenges. Their approach emphasizes understanding market edge cases and tail risks, enabling them to provide liquidity even during volatile market conditions, such as the 2020 turmoil when they helped maintain ETF liquidity[1][2][3]. The firm operates with a highly collaborative culture where traders, researchers, and technologists work closely to design and implement sophisticated automated trading strategies and systems[1][3][4]. Technological innovation is central to Jane Street’s success—they build most of their software in-house, focus on low-latency networks, compiler optimization, and distributed systems, and have been pioneers in applying machine learning to quantitative finance since their founding[1][3][4][6]. The firm also offers institutional brokerage and partners closely with asset managers and other institutional clients to execute trades efficiently[1][4][8]. Financially, Jane Street is a powerhouse. In 2024, it reportedly generated $20.5 billion in net trading revenue, surpassing major banks like Bank of America and Citigroup, reflecting its dominant position in market making, especially in ETFs and credit trading[8]. The company is known for attracting top talent from elite universities with highly competitive compensation, fostering a culture of intellectual rigor and continuou