Sentiment and Speculation in a Market with Heterogeneous Beliefs
Ian Martin and
Dimitris Papadimitriou
American Economic Review, 2022, vol. 112, issue 8, 2465-2517
Abstract:
We present a model featuring risk-averse investors with heterogeneous beliefs. Individuals who are correct in hindsight—whether through luck or judgment—get rich, so sentiment is bullish following good news and bearish following bad news. Sentiment makes extreme outcomes far more important for pricing and has asymmetric effects on left- and right-skewed assets. Investors take speculative positions that can conflict with their fundamental views. Moderate investors are contrarian: they trade against excess volatility created by extremists. All investors view speculation as socially costly; but they also think it is in their self-interest, and the market can collapse entirely if speculation is banned.
JEL-codes: D81 D83 G11 G12 G41 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (10)
Downloads: (external link)
https://www.aeaweb.org/doi/10.1257/aer.20200505 (application/pdf)
https://www.aeaweb.org/doi/10.1257/aer.20200505.appx (application/pdf)
https://www.aeaweb.org/doi/10.1257/aer.20200505.ds (application/zip)
Access to full text is restricted to AEA members and institutional subscribers.
Related works:
Working Paper: Sentiment and speculation in a market with heterogeneous beliefs (2022) 
Working Paper: Sentiment and Speculation in a Market with Heterogeneous Beliefs (2019) 
Working Paper: Sentiment and speculation in a market with heterogeneous beliefs (2019) 
This item may be available elsewhere in EconPapers: Search for items with the same title.
Export reference: BibTeX
RIS (EndNote, ProCite, RefMan)
HTML/Text
Persistent link: https://EconPapers.repec.org/RePEc:aea:aecrev:v:112:y:2022:i:8:p:2465-2517
Ordering information: This journal article can be ordered from
https://www.aeaweb.org/journals/subscriptions
DOI: 10.1257/aer.20200505
Access Statistics for this article
American Economic Review is currently edited by Esther Duflo
More articles in American Economic Review from American Economic Association Contact information at EDIRC.
Bibliographic data for series maintained by Michael P. Albert ().