In a production economy with trade in financial markets motivated by the desire to share labor-income risk and to speculate, we show that speculation increases volatility of asset returns and investment growth, increases the equity risk premium, and reduces welfare. Regulatory measures, such as...

We develop an international financial market model in which domestic and foreign residents differ in their beliefs about the information content in public signals.We determine how informational advantages by domestic investors in the interpretation of home public signals impact equity markets....

Because of non-traded human capital, real-world fi nancial markets are massively incomplete. The modeling of imperfect, dynamic financial markets is a wide-open and difficult field, as yet barely ploughed. Following Cox, Ross and Rubinstein (1979), who calculated the prices of derivative...