The purpose of this study is to empirically examine the perception of professional investors in Pakistan regarding the usefulness of quarterly reports of companies. The perceptions of professional investors were solicited by using a questionnaire survey method.150 questionnaires were distributed in order to collect data. Out of which, 129 questionnaires were received and in a position for further analysis. Hence, the response rate was 86%. Descriptive statistics and Kruskal-Wallis test were used to evaluate the results. Findings show that the quarterly reports are useful for professional investors in Pakistan for their investment decision making process. This study provides evidence that the main purpose of quarterly reports according to professional investors, is to estimate the forthcoming annual results. The quarterly reports are also utilized for other purposes such as to evaluate the management performance and to ascertain turning points in earnings trend or liquidity. Professional investors considered the quarterly reports as third important source and considered the annual reports as the most important source of information in Pakistan. Furthermore, the study also provide evidence that the relative usefulness of quarterly reports depends on the professional investor’s interests and their intensity of analysis. It indicates that there is a significant difference in the perception of professional investors regarding different purposes of quarterly reports. On the other hand, there is no significant difference in the perception of professional investors regarding different sources of information.