Models can be wrong and recognising their limitations is important in financial and economic decision making under uncertainty. Robust strategies, which are least sensitive to perturbations of the underlying model, take uncertainty into account. Finding the explicit set of alternative models...

We search for a trading strategy and the associated robust price of unhedgeable assets in incomplete markets under the acknowledgement of model uncertainty. Our set-up is that we postulate an agent who wants to maximise the expected surplus by choosing an optimal investment strategy....

This paper assesses the sophistication of pension funds’ investment policies using data on 748 Dutch pension funds during the 1999–2006 period. We develop three indicators of sophistication: gross rounding of investment choices, investments in alternative sophisticated asset classes and...

The paper investigates risk attitudes among different types of individuals. We use several di erent measures of risk attitudes, including questions on choices between uncertain income streams suggested by Barsky et al. (1997) and a number of ad hoc measures. As in Barsky et al. (1997) and...

We estimate a nominal life-cycle portfolio choice model using shopping coststo generate money demand. The model delivers realistic implications forstock market participation and portfolio composition because money crowdsout other assets at lower levels of wealth. We quantify how...

We explicitly derive and explore the optimal consumption and portfolio policies of a loss- averse individual who endogenously updates his reference level over time. We find that he protects his current consumption by delaying painful reductions in consumption after a drop in wealth, and...

Drawing on a novel database of the 401(k) plans of 296 firms, we examine the international equity allocations of 3.8 million individuals over the period 2005-2011. We find enormous cross-individual variation, ranging from zero to more than 75%, and strong cohort effects, with younger cohorts...

We test the relation between ambiguity aversion and five household portfolio choice puzzles: non-participation in equities, low allocations to equity, home-bias, own-company stock ownership, and portfolio under-diversification. In a representative U.S. household survey, we measure ambiguity...

We examine the daily activity and performance of a large panel of individual investors in Sweden's Premium Pension System in the period 2000 to 2010. We find that active investors outperform passive investors, and that there is a causal effect of fund changes on performance. Chosen funds...

Savings accounts are owned by most households, but little is known about the performance of households' investments. We create a unique dataset by matching information on individual savings accounts from the DNB Household Survey with market data on account-specific interest rates and...