market inefficiency
noun[U]
STOCK MARKET,FINANCEukusasituationin which afinancialmarketdoes notoperateas well as it should, forexamplewherecustomersdo not have enoughinformationaboutproducts,pricesare notrelatedtosupplyanddemand, etc.:
Onereasonformarketinefficiencyisshareholderopportunism.
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market efficiency