Capital asset pricing model in Portugal: Evidence from fractal regressions View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2018-11

AUTHORS

Ladislav Kristoufek, Paulo Ferreira

ABSTRACT

We examine risk profiles of the Portuguese stock market index component stocks using a novel approach to the classical capital asset pricing model (CAPM). Specifically, we estimate the CAPM via fractal regressions that allow studying the marginal effects at selected scales. In this way, we can reveal whether the risk is perceived differently by market participants with different investment horizons. Apart from the analysis itself, we provide new statistical insights into the issue of separating and comparing the scale-specific effects with statistical validity. We find several stocks deviating from an expected risk perception homogeneity across investment horizons. This is true for both analysed periods, i.e. before and after the global financial crisis. There are also several stocks that changed their relationship to the market portfolio in between, which has strong implications for possible portfolio construction. The proposed methodology is not limited to financial topics but can be used in any discipline where the scale-specific marginal effects might be of interest. More... »

PAGES

173-183

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s10258-018-0145-5

DOI

http://dx.doi.org/10.1007/s10258-018-0145-5

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1103461934


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