Publications des institutions partenaires

S'abonner aux flux infonet economy   681 - 700 of 763

Managerial Guidance and Analysts' Underreaction

Empirical investigations of analysts forecast surveys concerning earnings realizations find significant time varying biases usually attributed to the analysts liability to cognitive limitations. For example, a positive autocorrelation of analysts forecast errors is commonly explained by analysts underreaction. In this paper we develop a random dynamical system describing the…

Full Text

English / 01/01/2007

Making prospect theory fit for finance

The prospect theory of Kahneman and Tversky (in Econometrica 47(2), 263–291, 1979) and the cumulative prospect theory of Tversky and Kahneman (in J. Risk uncertainty 5, 297–323, 1992) are descriptive models for decision making that summarize several violations of the expected utility theory. This paper gives a survey of applications of prospect theory to the portfolio choice problem…

Full Text

English / 01/09/2006

Pareto-Improving Social Security Reform When Financial Markets Are Incomplete!?

This paper studies an overlapping generations model with stochastic production and incomplete markets to assess whether the introduction of an unfunded social security system leads to a Pareto improvement. When returns to capital and wages are imperfectly correlated a system that endows retired households with claims to labor income enhances the sharing of aggregate risk between…

Full Text

English / 01/06/2006

American Parisian Options

In this article, we describe the various sorts of American Parisian options and propose valuation formulae. Although there is no closed-form valuation for these products in the non-perpetual case, we have been able to reformulate their price as a function of the exercise frontier. In the perpetual case, closed-form solutions or approximations are obtained by relying on excursion…

Full Text

English / 01/01/2006

Is public health insurance an appropriate instrument for redistribution?

The share of the public sector in health insurance provision
varies enormously from country to country. It is larger in more redistributive countries. We provide a possible theoretical explanation for these facts: a public health insurance system, fi nanced by taxes, can be an effi cient means of redistribution, complementary to income taxation. This relies on the assumption of…

Full Text

English / 01/01/2006

Risk aversion and planning horizons

A number of empirical studies seem to reject the additive separability of preferences that is assumed in most theoretical models of the life cycle. We show that, when additive separability is abandoned and interactions between consumptions at different dates are taken into account, an interesting relation emerges between risk aversion and length of the planning horizon. Specifically…

Full Text

English / 01/01/2006

Prevention Is Better than Cure: The Role of IPO Syndicates in Precluding Information Acquisition

We treat information acquisition by potential investors in initial public offerings as endogenous. With endogenous information, the critical question is why underwriters would allow investors to spend resources acquiring superior information intended solely to effect a wealth transfer. We show that an investment banking syndicate is an institutional arrangement designed to avoid such…

Full Text

English / 01/01/2006

Accurate value-at-risk forecasting based on the Normal-GARCH model

A resampling method based on the bootstrap and a bias-correction step is developed for improving the Value-at-Risk (VaR) forecasting ability of the normal-GARCH model. Compared to the use of more sophisticated GARCH models, the new method is fast, easy to implement, numerically reliable, and, except for having to choose a window length L for the bias-correction step, fully data…

Full Text

English / 01/01/2006

Reply to 'Asset Trading Volume in Innite-Horizon Economies with Dynamically Complete Markets and Heterogeneous Agents: Comment'

In a comment, Peter Bossaerts and William R. Zame [2006. Finance Research Letters. This issue] claim that the main result of our paper [Judd, K.L., Kubler, F., Schmedders, K., 2003. The Journal of Finance 58, 2203–2217], namely the no-trade theorem for the dynamic Lucas infinite horizon economy with heterogeneous agents, is an artifact of the assumption that asset dividends and…

Full Text

English / 01/01/2006

Seiten

Le portail de l'information économique suisse

© 2016 Infonet Economy