Impacto do ISE no valor de empresa obtido pelo modelo Ohlson

Abstract

Several stock exchanges (BM&FBOVESPA, NYSE, London Stock Exchange, among others) are expanding their offerings of socially responsible investments. One can justify this fact by increasing the demand for that type of investment. The Sustainability indexes as the ISE - Corporate Sustainability Index or DJSI - Dow Jones Sustainability Index propagate the idea that these companies that include in their business strategy, social, environmental and financial actions are better prepared for future challenges. The objective of this dissertation was to investigate whether the presence or the passage of the ISE companies can influence its value in the long run. The sample was formed by 646 firms listed on BM&FBOVESPA, obeying its classifications of economic sectors; the period considered was from 1999 to 2009, in a data panel regression. The Ohlson model (1995) was chosen for valuation of companies, because it´s a model that uses accounting variables such as book value and earnings to account for company value. The Ohlson model (1995) was validated in the statistical test, so it can explain the value of the firm for BM&FBOVESPA companies during the study period. The relationship between participating in the ISE and the company value was not statistically significant in this period. This result is contrary to the message conveyed by BM&FBOVESPA that in the long run, companies that practice Sustainability actions will generate greater value to investors.