\ud ABNORMAL RETURN ANALYSIS BEFORE AND AFTER BONUS SHARE ISSUE IN INDONESIA STOCK EXCHANGE \ud YEAR 2007-2008 \ud

Capital market development is an alternative financing diggers capital, where capital market instruments traded. Stock trading activity in the stock market can be influenced by the presence of corporate action taken by the issuer in order to meet certain goals One form of corporate action taken is the issuance of bonus shares. The bonus shares are new shares issued by companies as rewards to the holders of old shares from the capitalization of share premium. Problems in this study is whether in the form of efficient markets is weak, whether there is abnormal return before and after the issuance of bonus shares and whether there is a significant difference in abnormal return before and after the issuance of bonus shares in companies that distribute bonus shares in BEI years 2007 to 2008. The purpose of this study is to determine the efficiency of the market which is marked by the stock price randomly (random) and know the level of significance of differences in abnormal returns before and after the issuance of bonus shares. The hypothesis presented in the form of efficient market is weak and there were no significant differences before and after the issuance of bonus shares in the sample period. The object of research is that issuers listed on the Stock Exchange and the issuance of bonus shares in 2007-2008 as many as eight issuers