Capital market theory is concerned with the equilibrium relationship between risk and expectedreturn on risky assets (Drew, et al (2003). This study aims to investigate the effects of bookto-market value, exchange rate and firm's size changes on the stock returns. The use of Engle-Granger's Error Correction Model completed with Cointegration Test, allow this study to testthe short term as well as the long term relationship between variables. The evidence show thatbook-to-market value and exchange rate changes do predict the stock return changes, but not forthe firm's size. The interpretations and the implications are discussed.