Les actifs financiers sûrs sont au cœur de la finance de marché aujourd'hui. L'aptitude de tels actifs à protéger la valeur de l'épargne et des avoirs financiers, à servir de garantie à des prêteurs, à permettre aux entités souveraines de se financer ou encore aux banques centrales de...

Minimum variance and equally-weighted portfolios have recently prompted great interest both from academic researchers and market practitioners, as their construction does not rely on expected average returns and is therefore assumed to be robust. In this paper, we consider a related approach,...

In an extended variant of the life-cycle hypothesis, saving behaviour is shown to depend crucially on the interaction between two preference parameters : γ, which represents risk attitudes (aversion, prudence…), and δ, the rate of time depreciation. Hence, the predictions of four specific...

We study a dynamic and in nite{dimensional model with Knightian uncertainty modeled by incomplete multiple prior preferences. In in- terior e cient allocations, agents share a common risk{adjusted prior and use the same subjective interest rate. Interior e cient alloca- tions and equilibria...

Kimball, 1990a and Kimball, 1990b established that income risk increases the marginal propensity to consume if and only if absolute prudence decreases. We characterize decreasing and increasing multivariate prudence and show that a multidimensional risk increases the marginal propensity to...

With population ageing in a changing PAYG system context, our aim is to identify whether households take into account a retirement risk in their global accumulation behaviour. We define the retirement risk as a long term revenue risk linked with changes in the generosity of the PAYG system. We...

We consider a formal approach to comparative risk aversion and apply it to intertemporal choice models. This makes it possible to investigate whether standard classes of utility functions, such as those inspired from Kihlstrom and Mirman (1974), Selden (1978), Epstein and Zin (1989) or Quiggin...