Companies we track
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Real overviews, real hiring data — see who's building, where, and what roles are open right now.
Simplex Trading is a technology-driven proprietary market-making firm specializing in U.S. equity options and futures options, building its own software to provide liquidity to financial markets. It serves financial markets directly rather than external clients. Founded in 2004, Simplex Trading is headquartered in Chicago, Illinois.
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