Wen Jin, PhD, CFA, is a Managing Director and Portfolio Manager for QMA working within the Quantitative Equity team. In this capacity, he is responsible for portfolio management, analysis and research. Prior to joining QMA, Wen was a Portfolio Manager and the Head of Quantitative Strategy and Trading at Aristeia Capital Management, where he oversaw derivatives valuation, quantitative trading strategy development and portfolio management. Previously, Wen was a Senior Quantitative Strategist in the options trading group at Citadel Investment Group, where he was responsible for the development of equity option arbitrage and volatility arbitrage strategies. Wen’s articles have appeared in the Journal of Accounting Research and Wall Street Horizon, among other leading publications. He earned a BS in physics from University of Sciences and Technology of China, and an MA and PhD in physics from Columbia University.