Bubbles and Financial Professionals
The Review of Financial Studies, Forthcoming
120 Pages Posted: 16 Mar 2018 Last revised: 21 Oct 2019
Date Written: March 14, 2019
The efficiency of financial markets, but also their potential to produce bubbles are central topics in academic and professional debates. Yet, little is known about the contribution of financial professionals to price efficiency. We run 116 experimental markets with 412 professionals and 502 students. We find that professional markets with bubble-drivers - capital inflows or high initial capital supply - are susceptible to bubbles, although they are more efficient than student markets. In mixed markets with students, bubbles also occur, but professionals act as price stabilizers. We show that heterogeneous price beliefs drive overpricing, especially in bubble-prone market environments.
Keywords: Experimental finance, financial professionals, price efficiency, financial bubbles
JEL Classification: C92, D84, G02, G14
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