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    Please use this identifier to cite or link to this item: https://nccur.lib.nccu.edu.tw/handle/140.119/152078


    Title: 投資人關注度對台灣股市之影響
    The Effect of Investor Attention on the Taiwan Stock Market
    Authors: 鄭淇云
    Cheng, Chi-Yun
    Contributors: 鍾令德
    鄭淇云
    Cheng, Chi-Yun
    Keywords: Google Trends
    搜尋量指標
    投資人關注度
    台灣50指數
    投資組合
    多因子迴歸模型
    Google Trends
    Search Volume Index
    Investor Attention
    Taiwan 50 Index
    Investment Portfolio
    Multi-Factor Model
    Date: 2024
    Issue Date: 2024-07-01 12:42:25 (UTC+8)
    Abstract: 本研究採用2004年至2023年台灣50指數成分股為樣本,以股票名稱作為搜尋關鍵字,透過Google Trends平台獲取關鍵字之搜尋量指標Search Volume Index(簡稱SVI),作為投資人關注度的代理變數,並提出以不同股票SVI的相對比例為基礎計算得出的全新變數——Pair SVI,探討不同代理變數在台灣股票市場的應用效果,以及投資人關注度與台灣股票市場之間的關係。實證結果顯示,較高Pair SVI的股票在未來數期有較高的報酬。並且,以Pair SVI進行選股的投資組合績效明顯優於其他SVI變數,能夠在樣本期間內創造高於台灣加權指數的累積報酬,也能在控制其他市場因子後,持續獲得顯著的正alpha且一年內不會發生反轉。這些結果展現了Pair SVI變數於台灣股票市場選股策略中的價值,與文獻中提到的投資人關注度僅能帶來短期報酬的結論有所不同,也顯示出台灣股票市場與美國股票市場特性之差異。
    In a sample of Taiwan 50 Index stocks from 2004 to 2023, this study uses these stocks' names as keywords to obtain the Search Volume Index (SVI) through the Google Trends platform, serving as a proxy variable for investor attention. Additionally, this study proposes a new variable calculated based on relative SVI among stocks—Pair SVI. The purpose is to explore the effectiveness of different SVI proxy variables in predicting cross-sectional stock returns in Taiwan. Empirical results show that higher Pair SVI are associated with higher returns in the subsequent periods. Furthermore, the performance of stock portfolios selected based on Pair SVI significantly outperforms those based on other SVI measures. These portfolios achieve cumulative returns higher than the Taiwan Stock Exchange Capitalization Weighted Stock Index (TWII). They also generate significant positive alpha under muti-factor models without reversal within a year. These results demonstrate the persistence of the Pair SVI variable in stock selection strategies in the Taiwan stock market, at odds with the short-term relationship between investor attention and stock returns in the U.S. market.
    Reference: Bank, Matthias, Martin Larch, and Georg Peter, 2011, Google search volume and its influence on liquidity and returns of German stocks, Financial Markets and Portfolio Management 25, 239–264.

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    陳雯琪, 2019, Google搜尋趨勢與媒體曝光度對台灣50指數成分股公司績效的影響, 國立屏東大學財務金融學系學位論文.

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    Description: 碩士
    國立政治大學
    國際經營與貿易學系
    111351010
    Source URI: http://thesis.lib.nccu.edu.tw/record/#G0111351010
    Data Type: thesis
    Appears in Collections:[國際經營與貿易學系 ] 學位論文

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