New York-based quantitative trading firm and market maker — one of the most profitable financial institutions in the world, known for its culture of rigorous probabilistic reasoning and talent for recruiting mathematically exceptional people.
Jane Street's model: market-making across equities, ETFs, bonds, and derivatives using quantitative methods and sophisticated risk management. Its cultural distinctiveness: Jane Street is run more like a research organization than a bank — extensive internal education programs, collaborative problem-solving culture, extreme intellectual selectivity in hiring. Many of the most prominent figures in the rationalist/EA community have Jane Street connections. Sam Bankman-Fried (FTX founder) was a Jane Street trader before FTX — making the firm tangentially connected to one of the largest financial frauds in history.
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