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Weijiang Dong is a quantitative researcher and portfolio manager at Two Sigma since April 2016, previously serving as a quant strategist at KCG Holdings, Inc. from August 2015 to April 2016. Prior experience includes a director role at RBC Capital Markets from November 2009 to May 2015, where responsibilities encompassed global arbitrage trading and equity options market making. Weijiang has also held positions as a quantitative specialist at Barclays Capital and Lehman Brothers, focusing on equity derivatives pricing and various financial modeling techniques. Early career experience includes financial software engineering at Bloomberg, specializing in interest rate derivatives pricing. Weijiang holds a Ph.D. in Physics from UCLA and a B.S. in Physics from the University of Science and Technology of China.