本研究使用臺灣公司治理100指數，探討公司治理與經營績效之關聯性，並檢驗公司治理指數100宣 告時，成分股是否有正的異常報酬。研究樣本包括774家上市公司，研究期間為2012年至2014年。迴歸 分析結果發現，公司治理與經營績效關係並不顯著；然而，顧客知曉對公司治理與經營績效關係具有顯著 的正向干擾效果，隱含高顧客知曉成分股顯著地正向影響經營績效。事件研究結果顯示，當公司治理100 指數宣告時，宣告前有顯著地正的異常報酬，特別是高顧客知曉成分股。 關鍵字：公司治理、顧客知嘵、異常報酬。

This study uses Taiwan Corporate Governance 100 Index to investigate the relationship between corporate governance and operating performance. In addition, this study examines if the announcement of corporate governance 100 (CG100) firms shows positive abnormal returns for the selected CG 100 firms. The sample consists of 774 listed firms, spanning the period from 2012 to 2014. Ordinary least squares regression results show that the link between corporate governance and operating performance is insignificant. However customer awareness has a significant positive moderating effect on the link between corporate governance and operating performance, which implies that CG 100 firms with higher customer awareness have a significant positive effect on operating performance. Event study finds that CG100 firms show significant, positive abnormal returns before the announcement of CG100 index, especially for CG100 firms with higher customer awareness.