| Summary: | 碩士 === 國立雲林科技大學 === 財務金融系碩士班 === 99 === This study is made based on the special column of “ Potential Stocks this week” published weekly on Economic Daily News. The study period was from Jan. 2010 to the end of year. Via the use of Event Study Market method we observed significant abnormal returns on the event day. However, the abnormal returns vanish quickly. Therefore, we conclude Taiwan’s stock market is Semi-Strong Form Efficiency. In addition, firms from various industry segments respond differently to these recommendations and the reactions from finance and insurance industry are more evident. In addition, firm size plays a role in affecting the abnormal returns. For example, small firms enjoy a higher abnormal returns than big firms.
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