Compared information content and usefulness of interim income statements in periods of 3, 6 and 9 months

The main purpose of the present article is to investigate the information content of interim income statements according to Accounting Standard No.22. For this purpose the interim financial statements of 318 corporations that are listed in Tehran Stock Exchange were studied. The statements are for 3, 6, and 9 month periods between the years 1381 to 1387. In order to discuss the information in the statements we studied the power of interim income statements in prediction of stock return, profitability, generate cash flow, financial position and liquidation. The results show that the three types of interim income statements have enough information and investors can use their data to obtain predictor models. The results indicate that the power of the information content of interim income statements for predicting generating cash flow are maximum, but for stock return are minimum. At last, the research concludes that a great deal of numbers in interim income statements have incremental information's content, because every of them can increase statistical reliability of predication models. In addition numbers in interim income statement with 9 months period have the highest information content.