Determinants of Announcement timing of Income Statement inTehran Stock Exchange

Releasing quarterly  income statement  is mandated by  disclosure requirements in Tehran Stock Exchange .We  focus on  quarterly and annual income statement. We investigate why some companies prefer to announce   income statement  relatively early. Financial statements  are included income statement for each of ۳,۶,۹ and ۱۲-month period .Our samples are  ۳۲۷۳ announcements about ۲۴۶ companies in the period ۱۳۸۰-۱۳۸۷(Iranian calendar).We use multiple regression model to determine the determinants. The  interval (between time of announcement and end of the period ) is dependent variable and various variables, including volume of transactions, free float shares, size, leverage and  market to book value are independent variables. The results indicate that in the period of ۹ and ۱۲ months, trading volume is affecting on the timing of quarterly earnings  announcing. Also we find   evidence consistent with quarterly reports containing bad news release to be delayed.  

Keywords:

disclosure , earnings announcement , income statement. , زمان بندی افشا , زمان اعلامیه های سود