Apreçamento racional de mercadorias utilizando modelo de valor presente para o boi gordo no período de 2001 a 2008

AUTOR(ES)

Felipe Namur

DATA DE PUBLICAÇÃO

2010

RESUMO

Campbell and Schiller (1987) proposed, within the scope of econometric analysis and cointegration, a powerful tool that enabled the present value model tests to also test market rationality and efficiency. The opportunity offered by the present value model of a substantial and settled fundamental value theory together with a powerful tool kit of empiricaleconometric tests was able to effectively contribute for the comprehension of important phenomena in the area of financial economics such as asset pricing, agents rationality and market efficiency as well as impelling new studies and improvements. If this basic rationality can be verified then follows several econometrically testable implications. In other words there will be a spread S reflecting the differences between the theoretical or fundamental value and the actual prices that if stationary will reflect a long term trend of reversion to those fundamental values. Pindick (1991) pioneered in the application of the present value model for commodities. Although other works and tests of the present value model for other assets have been developed it could not be found any other work or research for commodities but Pindick (1991) in the literature. The other papers and researches dealing with commodities before Pindick (1991) regard the convenience yield qualitatively, developing and analyzing it conceptually. It is in Pindyck (1991) that for the first time a quantitative operational variable for the convenience yield is built demonstrating that its values can be extracted from future prices. These so named cash flows can be seen as similar to dividends for stocks and are possible of being tested by the present value model. This works purpose is to apply Pindycks (1991) methodologies in Brazilian reality, using the live cattle commodity over the period from 2.001 to 2.008 based on theoretical reference and literature about the present value model, rationality hypothesis, market efficiency and making use of econometric tool kit regarding stationarity and unit root tests (ADF), Granger casuality testes, F tests with restrictions, OLS, VAR and cointegration tests. The validation of virtually all the implications of the present value model leads to the following conclusion and response to the formulated research problem: Prices for live cattle over the period from 2.001 to 2.008 match with the net convenience yield cash flows discounted to the present. The evidences presented assert the adjustment between prices and cash flows, implying that economic agents while trading with the live cattle commodity do that rationally, and only in a no significant fashion drive away from its fundamental values, regressing to it as a rule.

ASSUNTO(S)

market rationality racionalidade administracao de empresas efficiency-cointegration tests-var modelo de valor presente pricing of commodities eficiência de mercado apreçamento de mercadorias testes de co-integração-var present value model

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