I solve (with an approximation) a Grossman-Stiglitz economy under general preferences, thus allowing for wealth effects. Because information generates increasing returns, decreasing absolute risk aversion, in conjunction with the availability of costly information, is sufficient to explain why...

There is an error in my 2004 paper "Wealth, Information Acquisition and Portfolio Choice". This note shows how to correct it by adjusting the hypotheses of the model. Specifically, it assumes that agents learn about the stock's mean payoff rather than about its realization. All the conclusions...

Traditional portfolio balance theory derives a downward sloping currency demand function from limited international asset substitutability. Historically, this theory enjoyed little empirical support. We provide direct evidence by examining the exchange rate effect of a major redefinition of the...