This article explores if and how Enterprise Risk Management (ERM) influences market values of large US non-financial companies in the period from 2003 to 2012. This is the first empirical study that brings evidence on the effect of ERM on the value of non-financial companies and that explores not only the market reaction to the ERM announcement, but also the investors’ perception of long-term ERM usage. Our research shows evidence that ERM has a positive effect on the market value for a short period of time following the announcement of ERM implementation. After 2.67 years, the market premium for ERM companies fades away, so a company does not have a higher market value just because it has ERM. Our results indicate that ERM does not contribute to a company’s market value in the long term.