During and after the financial crisis 2007-2011, the Viet Nam stock market, generally, has unexpected fluctuations and VNI-Index has decreased. Besides, the Viet Nam computer and electrical industry, specifically, has to re-evaluate the risk level. First, we estimate asset and equity beta of four (4) sub-industrial listed companies in Viet Nam computer and electrical industries by using a proper traditional model. We found out that the mean value of beta of total 64 firms used in this research

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... s around 0,711, which is quite acceptable. Second, through comparison among four (4) different groups, we find out that the values of beta during the period 2007-2011 of listed hardware companies vary less than those of the rest three (3) listed groups: software, electrical and comm./telecommunication firms. Finally, this paper provides both internal and external investors, financial institutions, companies and government more evidence in establishing their policies in investments and in governance.