A senior Two Sigma quant researcher is leaving for Cubist. Kan Huang co-led a key machine-learning unit known as techniques forecasting. Jin Choi, Huang's interim cohead, has been named sole head of the long-running techniques group. AdvertisementA senior leader in one of Two Sigma's key research units is leaving the firm for quant rival Cubist Systematic Strategies, according to people familiar with the matter. Huang is a leader of a Two Sigma unit that develops machine-learning models and other advanced strategies from various data sources and trading signals.

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Persons: Kan Huang, Jin Choi, —, Steve Cohen's, Huang, Ken Baron, Choi, John Overdeck, David Siegel, Scott Hoffman, Carter Lyons, Ali, Milan Nekmouche, Jian Wu Organizations: Sigma, Service, Bloomberg, Sigma Investments, Securities and Exchange Commission, Wall Street