Titolo:  Market Premia for BRIC Countries: A Preliminary Analysis of Performance and Risk
Data di pubblicazione:  2014
Abstract:  A recent branch of the literature on asset pricing focuses on integrated international asset pricing, trying to assess whether standard models can perform better in a country specific or in an aggregate context. To offer new evidences on this research subject we analyse the return dynamic of BRIC countries. Our objective is twofold: first, to test the explanatory power of local model using local explanatory variables; second, to measure the relative premium attainable by an investor selecting a security portfolio based on BRIC countries. As for the first part, an influential work by Karolyi and Stulz analyses the local and global factor affecting equity prices. To this end they revise the standard CAPM model and – by contrasting a “domestic” and a “global” CAPM – try to measure and give explanations to phenomenons such as the “home bias”, that is the underweighting of foreign stocks in portfolios. Despite their relevant seminal intuitions, they conclude their understanding of the return mechanics is “quite incomplete”. In more recent times Fama and French have proposed a revised version of their own well-known three-factor model describing stock returns (in term of size, value and growth). They compare a model built with global factors with a version of the same model based on local factors, with respect to 23 countries and with a focus on small size companies, and particularly microcaps. Refocusing the analysis on small stocks, they find a statistically significant premium offered by value stocks and show that global models fail to explain regional returns. Despite the interest of the academia for this subject, most of the prominent literature does not develop those comparisons taking into proper account the impact of exchange rates. For example, Fama and French assume, among the other things, that there is a “complete purchasing power parity [i.e.] relative prices of goods are the same everywhere and an exchange rate is just the ratio of the nominal prices of any good in two countries”. This is clearly not consistent with the dynamic of modern economies. To overcome this limitations in our analysis, we compute returns using a numeraire currency and we add the relative exchange rate as an explicative factor. A further point where we try differentiating is the risk analysis. To this end we adopt the point of view of a foreigner investor willing to invest in a BRIC country. Thereafter, we test if there is a relative premium for the invested assets: that is if, considering the exchange rate effects, there is an excess return moving from a standard equity investment to a BRIC investment. On a second step, we compare the absolute performance with a measure of risk adjusted performance. To this end we propose a Sortino like measure, where the expected excess return of the BRIC investment (relative to a non-BRIC one) is scaled with a shortfall measure (semivariance). Finally it bears mentioning that, to the best of our knowledge, there are no articles on the subject matter explicitly focusing on the BRIC area. Our preliminary results show that one size does not fit all and local models can perform in many instances better than a single integrates one. The relative movement of currencies involved can affect the result obtained and permit to improve models. One point to be emphasized is that, despite we tend to bring together under a common name the BRICs, the returns’ dynamic of the BRIC countries is not at all the same, but presents quite distinctive features. While there are today no means to accept or refuse the well-known Goldman Sachs speculation , we believe that, beyond theoretical insights, analysing the economies of such a broad area is by all means of paramount importance for both scholars and practitioners.
Handle:  http://hdl.handle.net/11584/121477
ISBN:  9785759812357
Tipologia: 4.1 Contributo in Atti di convegno

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