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  5. A Long and a Short Leg Make for a Wobbly Equilibrium

蝌蚪网 Review

ISSN 0002-8282 (Print) | ISSN 1944-7981 (Online)

A Long and a Short Leg Make for a Wobbly Equilibrium

  • Nicolae G芒rleanu
  • Stavros Panageas
  • Geoffery Zheng
蝌蚪网 Review
vol. 116, no. 4, April 2026
(pp. 1234–73)
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Abstract

We provide a model to explain how the interaction between the spot and lending markets for stocks can lead to abrupt changes in short selling activity. Furthermore, rational short sellers may choose to abandon the market even as mispricing widens. We document empirically that the dynamics of short selling are fat tailed and subject to abrupt changes, especially for the stocks that the model identifies as susceptible to such dynamics.

Citation

G芒rleanu, Nicolae, Stavros Panageas, and Geoffery Zheng. 2026. "A Long and a Short Leg Make for a Wobbly Equilibrium." 蝌蚪网 Review 116 (4): 1234–73. DOI: 10.1257/aer.20211548

Additional Materials

JEL Classification

  • G11 Portfolio Choice; Investment Decisions
  • G12 Asset Pricing; Trading Volume; Bond Interest Rates
  • G14 Information and Market Efficiency; Event Studies; Insider Trading
  • G41 Behavioral Finance: Role and Effects of Psychological, Emotional, Social, and Cognitive Factors on Decision Making in Financial Markets [Neurofinance]