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Two Sigma is a New York-based quantitative hedge fund founded in 2001 by John Overdeck and David Siegel, both former D.E. Shaw employees. The firm built its reputation on using data science, machine learning, and distributed computing to find trading signals across huge datasets, treating markets less like a trading floor and more like an engineering problem. It grew into one of the largest quant funds in the world, managing tens of billions in assets at its peak. The firm's culture blends academia and tech: many hires come from math, physics, and computer science PhD programs rather than traditional finance backgrounds. Two Sigma has also faced its share of turbulence in recent years, including internal disputes between its founders and periods of investor withdrawals, but it remains one of the most recognizable names in systematic trading and a common training ground for quants who go on to start their own funds or ventures. ——- #quant #finance #twosigma #hedgefund #wallstreet