本研究使採用市場週轉率、融資變動率、放空比率、空頭市場,作為情緒代理變數,探討投資者變數對股票報酬的影響,並且運用GARCH(1,1)分析投資者情緒對蘋果概念股的風險,並且將情緒變數區別為高低情緒,再利用迴歸分析探究其之間的關係,實證結果發現,蘋果概念股報酬率的迴歸中,市場週轉率和放空比率為正向顯著影響,在大盤風險方面,在市場週轉率、放空比率、空頭市場皆為正向顯著影響。投資者高低情緒差異,對於蘋果概念股股票報酬與風險影響有所不同。投資者情緒對蘋果概念股報酬影響,高情緒在融資與融券變動率有顯著影響,低情緒在融券變動率時有顯著影響;投資者情緒對蘋果概股風險的影響,高情緒在融資變動率時情緒和風險皆顯著影響,低情緒的融券變動比率時情緒皆顯著影響。
Sentiment variables which are market turnover, margin trading, short interest ratio, short sale, and bear market are used to investigate their effect on the returns and risk of Apple concept stocks by using GARCH (1,1) models. Classification between high and low sentiment variables is also applied to regression analysis. The empirical results show that Apple stocks rate of return, the market turnover ratio have significantly positive impacts on market risk; and turnover in the market, the ratio of venting, and bear markets all have significantly impacts on market returns. Therefore, the study found that some investor sentiments have effects on Apple stocks returns and risk.