problematic, particularly in dynamic markets, because economic theory does not often allow a confident prediction of what would … cases should be required to support their claims with a plausible theory and evidence, and that the burden should be greater …

qualitative information on a firm's competitive environment. I find that funds with above median monopoly bets outperform by up to … 92 basis points annually and trade more successfully in both their monopoly and nonmonopoly sub-portfolios. My … environment using the 9/11 terrorist attacks. I document that managers who place larger monopoly bets are less likely to invest …

basic questions within that model. We review the empirical literature through the lens of the theory, using the theory to …