John W. Welborn

John W. Welborn is a Senior Lecturer in Economics and Mathematics at Dartmouth College, where he also holds appointments in the Political Economy Project. His expertise spans China, finance, regulation, and short selling. He teaches courses including ECON 15 (Political Economy of China) and ECON 26 (Economics of Financial Markets).

Education: Ph.D. in Economics (George Mason University, 2013), M.A. in Economics (London School of Economics, 2005), A.B. in Economics with Mathematics (Dartmouth College, 2002).

Research focuses on securities regulation (particularly Reg SHO), short selling dynamics, and market volatility. His recent work includes analyzing Reg SHO's 20-year impact and exploring fails-to-deliver (FTDs) in financial markets. Collaborations with institutions like the Journal of Empirical Finance and Journal of Financial Markets reflect his empirical finance contributions.

Outside academia, Welborn provides expert consulting on short selling, options trading, and litigation support. He founded Welborn Economics, offering proprietary analysis of stock lending data and custom reports for public companies. His advocacy work includes petitioning the SEC for regulatory reforms.