John W. Welborn
Senior Lecturer
Appointments
Senior Lecturer in Economics
Senior Lecturer in the Political Economy Project
Senior Lecturer in Mathematics
Area of Expertise
China, Finance, Regulation, Short Selling
Education
Ph.D., Economics, George Mason University, 2013
M.A., Economics, London School of Economics, 2005
A.B., Economics modified with Math, Dartmouth College, 2002
International Baccalaureate Diploma, Smoky Hill High School, 1998
Taught Courses
Publications
Welborn, John W., "Reg SHO at Twenty" (February 17, 2025). Available at SSRN: https://papers.ssrn.com/sol3/papers.cfm?abstract_id=5141255.
Stratmann, Thomas and Welborn, John W. "Informed short selling, fails-to-deliver, and abnormal returns." Journal of Empirical Finance 38.A (2016): 81-102, ISSN 0927-5398, https://doi.org/10.1016/j.jempfin.2016.05.006.
Stratmann, Thomas, and Welborn, John W. "The Options Market Maker Exception to SEC Regulation SHO." Journal of Financial Markets 16.2 (2013): 195–226. https://doi.org/10.1016/j.finmar.2012.04.002.
Stratmann, Thomas and Welborn, John W. "Exchange-Traded Funds, Fails-to-Deliver, and Market Volatility" (November 30, 2012). GMU Working Paper in Economics No. 12-59. Available at SSRN: https://ssrn.com/abstract=2183251 or http://dx.doi.org/10.2139/ssrn.2183251.
Welborn, John W. "The Phantom Shares' Menace." Regulation 31:1 (2008), https://www.cato.org/sites/cato.org/files/serials/files/regulation/2008/2/v31n1-7.pdf.
Selected Works & Activities
"Let's Talk Markets Live–Reg SHO Turns 20," Let's Talk Markets Live with Dave Lauer, February 2025
"Naked Shorts, FTDs, and the Overstock Case - AMA part 2 with John Welborn," Let's Talk Markets Live with Dave Lauer, April 2024
"Naked Shorts, FTDs, & RegSHO - Urvin's AMA with John Welborn," Let's Talk Markets Live with Dave Lauer, February 2024
Dartmouth's Best Professors, Dartmouth Review, 2023
NOTES TO STUDENTS
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