<p align="center"><strong>Abstract</strong></p><p><strong><em>The objective of this research is to examine short term performance of stock </em></strong><strong><em>price after Initial Public Offering (IPO) in Indonesia, and also to know </em></strong><strong><em>whether there are differences between weekly stock price performance and </em></strong><strong><em>monthly stock price performance. The stock price performance is measured by </em></strong><strong><em>abnormal return and wealth Relative. This research is an empirical study for </em></strong><strong><em>the companies which performs IPO in the period of2000 to 2006. Re> ult of the </em></strong><strong><em>analysis shows that all period tested, weekly performance and monthly </em></strong><strong><em>performance, are outperformed. The comparation of the performance shows </em></strong><strong><em>that weekly stock price performance is higher than monthly stock price </em></strong><strong><em>performance.</em></strong></p><p><strong><em>Keywords .'Initial Public Offering, weekly stock price performance, monthly stock priceperformance, abnormal return, wealth relative</em></strong></p>