本研究主要是探討台灣加權指數與證券商市占率的關聯性，觀察兩者間是否有相關或預測關係，以融資餘額變動率做為控制變數，研究樣本證券商共496間，資料來源係由台灣經濟新報資料庫 (TEJ) 和台灣證券交易所取得，樣本區間自2007年01月至2020年02月，共78,368筆，本文分析加權指數報酬與證券商市占變動率兩者間關聯性之研究，研究發現證券商市占變動率對於台灣加權指數報酬共有109間證券商具有相關性，其中僅有49間證券商同時具有相關性和預測性。;This study is mainly to explore the correlation between the weighted index of Taiwan and the market share of securities firms, to observe whether there is a correlation or forecast relationship between the two, and to use the rate of change in financing balance as a control variable. A total of 496 sample securities firms are studied. Obtained by the Taiwan Economic Newspaper (TEJ) and the Taiwan Stock Exchange, the sample interval is from January 2007 to February 2020, a total of 78,368 pens. This paper analyzes the correlation between the weighted index returns and the rate of change in the securities firm′s market share According to the research, it is found that the rate of change of the securities firm′s market share is correlated with a total of 109 securities firms in Taiwan′s weighted index returns, of which only 49 securities firms are both relevant and predictive.
