equilibrium model with a fund offering the risk-adjusted market portfolio (RAMP), ambiguity averse investors hold the fund and an … optimal portfolio based on only one information source (price versus private signal). Asset risk premia satisfy the CAPM with …

.S. household survey, we measure ambiguity aversion using custom- designed questions based on Ellsberg urns. As theory predicts …

We introduce the notion of a convex measure of risk, an extension of the concept of a coherent risk measure defined in … the underlying space of scenarios. As a case study, we consider convex measures of risk defined in terms of a robust not … ion of bounded shortfall risk. In the context of a financial market model, it turns out that the representation theorem is …

This paper presents a general theory that works out the relation between coherent risk measures, valuation bounds, and … theory presented seems to fill a gap between arbitrage valuation on the one hand and single agent utility maximization or … full-fledged equilibrium theory on the other hand. "Coherent" valuation bounds strike a balance in that the bounds can be …

Typical value-at-risk (VAR) calculations involve the probabilities of extreme dollar losses, based on the statistical … VAR values that are adjusted for risk aversion, time preferences, and other variations in economic valuation. In the … context of a representative agent equilibrium model, we construct an estimator of the risk-aversion coefficient that is …

This paper considers a world in which pension funds may default, the cost of the associated risk of default is not …

adjusted to take account of future asset price risk. Some empirical calculations suggest that these adjustments are large, and …