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Hassan, Tarek A., and
Thomas M. Mertens. 2011. "Market Sentiment: A Tragedy of the Commons."
,
101(3): 402-05.
Show Article Details
DOI: 10.1257/aer.101.3.402
Abstract:We present a model in which investors decide whether or to what degree they want to allow their behavior to be influenced by "market sentiment." Investors who choose to insulate their decisions from market sentiment earn higher expected returns, but incur a small mental cost. We show that if information is moderately dispersed across investors, even a very small mental cost may result in a significant amount of sentiment in equilibrium: Individuals who choose to be swayed by sentiment increase uncertainty about the future and make it less costly for others to be swayed by sentiment as well.
Authors:
Hassan, Tarek A. (U Chicago)
Mertens, Thomas M. (NYU)
JEL Classifications:
D03: Behavioral Economics: Underlying Principles
D14: Personal Finance
D83: Search; Learning; Information and Knowledge; Communication; Belief
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