Unité mixte de recherche 7235

Equity Risk Premium and Time Horizon : What do the U.S. Secular Data Say ?

Georges Prat

[en]An ex-ante equity risk premium is the difference between the expected return of a risky asset at time t for a given future time horizon and an equivalent maturity risk-free interest rate. Using annual US secular data from 1871 to 2008, this study aims to model simultaneously the measures and the explanations of ex-ante equity risk premia for two polar horizons: the one period ahead horizon (i.e. the « short term » premium) and the infinite time horizon (i.e. the « long term » premium). Expectations being represented by traditional adaptive processes, large disparities in the dynamics of the two premia are evidenced. According to the conditional CAPM, each premium is at time t explained by the product of the price of risk by the expected variance of returns, these two magnitudes being horizon dependant. The expected variances depend on the past values of the centered squared returns (we found 5 and 8 years for the one year and the infinite horizon, respectively). For each horizon, the price of risk is determined by a spread of interest rates capturing economic factors of uncertainty and by an unobservable variable determined according to the kalman filter methodology (i.e. a state variable). The state variables are supposed to capture the influence of hidden variables and of non directly measurable psychological effects. The model gives a valuable representation of the « short term » and « long term » premia.[/en]

AGENDA

lundi 12 décembre 2022

Law, Institutions and Economics in Nanterre (LIEN)

Clément Brébion (Copenhagen BS)

En salle 614 et en distanciel

Unemployment Insurance Eligibility and Employment Duration

mardi 13 décembre 2022

Développement Durable Environnement et Energie (DDEE)

Nicolas Astier (Paris School of Economics)

16h-17h

Riding together: eliciting travelers’ preferences for long-distance carpooling

mercredi 14 décembre 2022

Économies du monde musulman

Mohamed Touati Tliba (École Supérieure de Commerce, Alger)

The scientific wealth of nations with special reference to MENA region: a cross-country productivity analysis of academic research

jeudi 15 décembre 2022

Doctorants

Pablo Aguilar Perez

Profitability and solvency of French insurance companies in an environment of low interest rates

jeudi 15 décembre 2022

Groupe de travail « Intelligence artificielle »

Matthieu Latapy (LiP6, CNRS / Sorbonne Université)

Salle G614B

Résistance — Perturber les Infrastructures en Réseaux

jeudi 15 décembre 2022

Groupe de travail Economie Comportementale

Magali Dumontet

TBA

jeudi 5 janvier 2023

Lunch

Mehdi Aït-Hamlat, Florian Baudoin, Tanguy Bonnet

Nouveaux doctorants

mardi 10 janvier 2023

Développement Durable Environnement et Energie (DDEE)

Antoine Missemer (CNRS, CIRED Paris)

Pour une histoire alternative des rapports économie-environnement : à propos de ‘A History of Ecological Economic Thought’

Inscription aux Newsletters