本研究藉由探討臺灣股市面對無可避免疫情之交易行為與特性，尋找出臺灣股市特殊時期異常報酬現象之原因，其中加入星期效應探討，臺灣股價的星期效應。運用一般化自我迴歸條件異質變異數模型(GARCH)分析臺灣股市的報酬率，實證結果顯示30個產業在週四的報酬最低，週一的報酬最高，在考慮新冠肺炎變數後，研究表示波動無明顯差異僅有四個產業分別為食品工業、電子、半導體業和通信網路業，其餘皆有明顯差異，經此研究得知，新冠肺炎帶來的異常波動並未造成報酬上的差異。 By exploring the trading behavior and characteristics of the Taiwan stock market in the face of the inevitable epidemic, this study finds the reasons for the abnormal remuneration phenomenon in the special period of the Taiwan stock market, which includes the weekly effect and the weekly effect of Taiwan's stock price. The so-called week effect, in which Saturday has a positive excess reward greater than Tuesday to Friday, but Monday has a negative reward that is smaller than on other days. The Generalized Self-Regressive Conditional Heterogeneous Variation Model (GARCH) was used to analyze the return rate of the Taiwan stock market.
