The Model for Pricing of Financial Assets CAPM compares or correlates the returns of individual action with the returns of the market by risk index called Beta. The market is a pattern or common denominator to obtain what is known as risk not diverse, also called of systemic risk. So that was a comparative study between two types of pricing of assets, traditional CAPM and conditional CAPM, whereas the latter uses the GARCH-M model, able to incorporate the conditional variance in its estimation. The Brazilian financial market over the past years, was the scene of a major growth and consolidation of Brazil at the national and international community. Thus, the BOVESPA, in an attempt to make the practice of investing in more stock to reach th...