PublicationOverconfidence Bias in International Stock PricesOverconfidenceBiasinInternationalStockPricesBy Margaret S. Stumpp & Peter Xu — Nov 10, 200315 mins readShareMailLinkedInTwitterCopy URLShareInvestigates whether investor overconfidence systematically biases stock prices, creating investment opportunities, uses valuation theory to suggest where these biases most likely occur. Read MoreBy Margaret S. StumppSenior Advisor, QMABy Peter XuCo-Head of Quantitative Equity, QMA