Abstract the purpose of this study was to examine the effect of agency costs on the asymmetry of information on companies listed on the indonesia stock exchange (idx) observation period 2009-2011. this research is hypothesis testing. the sample in this study is the low rate of growth of the company. proxies used for agency costs is the ratio of cost and asset utilization ratios. the result provides significant relationship between agency costs of information asymmetry. this is because the sample of this study is the low growth rate of the company. lower the growth rate of the company, office conflict also small, which means that the potential conflict of interest between managers and investors are not too high. keywords: information asymmetry, the ratio of operating costs, and asset utilization ratios