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The distribution of information and the price efficiency of markets

Brice Corgnet (), Mark DeSantis and David Porter

Journal of Economic Dynamics and Control, 2020, vol. 110, issue C

Abstract: Apparently contradictory evidence has accumulated regarding the extent to which financial markets are informationally efficient. Shedding new light on this old debate, we show that differences in the distribution of private information may explain why informational efficiency can vary greatly across markets. We find that markets are informationally efficient when complete information is concentrated in the hands of competing insiders whereas they are less efficient when private information is dispersed across traders. A learning model helps to illustrate why inferring others’ private information from prices takes more time when information is more dispersed.

Keywords: Information aggregation; Information dispersion; Market efficiency; Experimental asset markets; Learning models; Cognitive finance (search for similar items in EconPapers)
JEL-codes: C92 G02 G14 (search for similar items in EconPapers)
Date: 2020
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Related works:
Working Paper: The Distribution of Information and the Price Efficiency of Markets (2019)
Working Paper: The distribution of information and the price efficiency of markets (2019)
Working Paper: The Distribution of Information and the Price Efficiency of Markets (2018) Downloads
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Persistent link: https://EconPapers.repec.org/RePEc:eee:dyncon:v:110:y:2020:i:c:s0165188919300314

DOI: 10.1016/j.jedc.2019.02.006

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Journal of Economic Dynamics and Control is currently edited by J. Bullard, C. Chiarella, H. Dawid, C. H. Hommes, P. Klein and C. Otrok

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