Showing 1 - 10 of 55
Cet article examine de manière conjointe les effets de la taille, des ratios bénéfice/cours et valeur comptable/valeur marchande des actions sur les rendements des actions canadiennes. Il présente une estimation des primes de risque associées à chacune de ces anomalies de marché. Les...
Persistent link: https://www.econbiz.de/10005079378
We consider three sets of phenomena that feature prominently and separately in the financial economics literature: conditional mean dependence (or lack thereof) in asset returns, dependence (and hence forecastability) in asset return signs with implications for market timing, and dependence (and...
Persistent link: https://www.econbiz.de/10005100712
We examine whether risk, timing or mispricing hypotheses can explain the underperformance of private and public equity issuers, in Canada, where both categories share several common characteristics. Adding an investment risk factor to the TFPM reduces, but does not eliminate, the...
Persistent link: https://www.econbiz.de/10005100594
Dans cet article, nous proposons des tests sur la forme de la distribution des erreurs dans un modèle de régression linéaire multivarié (RLM). Les tests que nous développons sont fonction des résidus obtenus par moindres carrés multivariés, lesquels sont standardisés de façon à ce que...
Persistent link: https://www.econbiz.de/10005100629
In this paper, we propose several finite-sample specification tests for multivariate linear regressions (MLR) with applications to asset pricing models. We focus on departures from the assumption of i.i.d. errors assumption, at univariate and multivariate levels, with Gaussian and non-Gaussian...
Persistent link: https://www.econbiz.de/10005100677
In this paper we propose exact likelihood-based mean-variance efficiency tests of the market portfolio in the context of Capital Asset Pricing Model (CAPM), allowing for a wide class of error distributions which include normality as a special case. These tests are developed in the framework of...
Persistent link: https://www.econbiz.de/10005100885
In this paper, we propose exact inference procedures for asset pricing models that can be formulated in the framework of a multivariate linear regression (CAPM), allowing for stable error distributions. The normality assumption on the distribution of stock returns is usually rejected in...
Persistent link: https://www.econbiz.de/10005100963
In this paper, we provide evidence on two alternative mechanisms of interaction between returns and volatilities: the leverage effect and the volatility feedback effect. We stress the importance of distinguishing between realized volatility and implied volatility, and find that implied...
Persistent link: https://www.econbiz.de/10008855592
We evaluate biodiversity in a real options framework, when the resources in use are substitutable. We examine optimal conservation decisions given that a biodiversity loss is irreversible and that future use values are uncertain. While species substitutability is generally believed to reduce the...
Persistent link: https://www.econbiz.de/10005100634
His paper proposes a new wealth-dependent utility function for the inter-temporal consumption and portfolio problem, in which the subsistance (bliss) consumption level is a function of wealth. Ratchet effects obtain when higher wealth increases the subsistance consumption level; blasé behavior...
Persistent link: https://www.econbiz.de/10005100831