Time-varying asset returns lead highly risk-averse investors to choose market-timing exposures that increase in their horizon, in agreement with the common advice to reduce risk with age, but in contrast to theoretical work that prescribes constant portfolio weights. In a market where an...

For an investor with constant absolute risk aversion and a long horizon, who trades in a market with constant investment opportunities and small proportional transaction costs, we obtain explicitly the optimal investment policy, its implied welfare, liquidity premium, and trading volume. We...

We document aggregate income growth uncertainty at the state level, and the extent to which this uncertainty is reduced by risksharing through financial markets and federal fiscal policy. A methodology is adopted that is closely connected to the empirical growth literature. It does not rely on...

This paper uses Hansen and Jagannathan's (1991) volatility bounds to evaluate models with idiosyncratic consumption risk. I show that idiosyncratic risk does not change the volatility bounds at all when consumers have CRRA preferences and the distribution of the idiosyncratic shock is...

Beginning in 1998, U.S. commercial banks may determine their regulatory capital requirements for financial market risk exposure using value-at-risk (VaR) models i.e., models of the time-varying distributions of portfolio returns. Currently, regulators have available three hypothesis-testing...

There is extensive evidence that the degree of risksharing accomplished by international financial markets is low. Some have argued that this is the result of small potential benefits from risksharing. The gains from riskpooling that have been reported in the literature range from negligible to...