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企業社會責任對庫藏股宣告效果之影響

The Impact of Corporate Social Responsibility on Announcement Effect of Stock Repurchase

摘要


本研究欲探討當企業發生庫藏股宣告時,投入企業社會責任(Corporate Social Responsibility,簡稱CSR)之程度,是否對於企業自身股價之累積異常報酬(Cumulative Abnormal Returns,CAR)有所影響。採事件研究法分析之,事件日為首次出現在新聞媒體上之企業宣告購回庫藏股(Treasury Stocks)日期,研究期間為2006年至2009年。所探討之影響因子分別為企業CSR之短期投入,取事件日前一年CSR之總分;企業CSR之長期投入,為事件日前三年CSR總分之加權平均值;同產業CSR投入程度,則採宣告日前一年之產業平均。另採兩控制變數,包括市價淨值比及總資產,均採宣告日前一年資料;此外,增加一虛擬變數,將資料區分為金融海嘯發生前後,以驗證金融海嘯對CAR之影響。實證結果顯示,不論在短期投入、長期投入或同業間的投入,其投入多寡對庫藏股宣告所產生之累加異常報酬,大多無顯著之影響,即使有影響,也是負面影響且僅達10%顯著水準。此結果呼應學者所提CSR之類保險效果,亦即CSR之投入僅在企業面臨負面事件之衝擊下才能發揮其效果,減緩負面事件之衝擊;太平之時,僅會增加企業的財務支出,對其財務績效可能產生不良之影響。

並列摘要


This research was to discuss whether the investment amount of CSR (Corporate Social Responsibility) has impacts on CAR (Cumulative Abnormal Returns) of stock price during the announcement of stock repurchase. This research adopted event study from 2006 to 2009. The influential factors discussed were short-run input of CSR: the total score of CSR whole year before event day; long-run input of CSR: the weighted average score of CSR three years before event day; the input level of CSR within industry: the industrial average score whole year before event day. Two control variables were also adopted: MBR (Market-to-Book ratio) and total asset, both were whole year data before event day. In addition, one dummy variable were included to classified data into before/after financial crisis, to verify the influence of financial crisis on CAR. According to empirical result, regardless of short-run, long-run or industrial input, the amount of CSR has no significant influence on CAR, if any, negative influence and only achieved 10% significant level. Such result caters to the insurance-like effect of CSR introduced previously by scholars, which stated the input of CSR would only show effects when enterprises facing difficulties due to negative event as a buffer. However, it increases financial expenditure and might have negative influence on financial performance without negative events.

參考文獻


李建瑩(民99)。企業社會責任與財務績效關聯性研究-以本國金融業為例。國立 勤益科技大學企業管理系碩士論文,未出版。
陳怡臻(民100)。企業社會責任之避險效果:以S&P500 指數的公司為例。國立 成功大學工商管理系碩士論文,未出版。
詹婉喻(民97)。上市上櫃公司庫藏股宣告與經營績效之相關性研究。國立臺北 大學會計學系碩士論文,未出版。
嚴思羽(民99)。次級房貸風暴下台灣上市公司庫藏股購回宣告效應之研究。國 立交通大學理學院應用科技學程碩士論文,未出版。
鐘于翔(民100)。企業社會責任對新產品上市宣告股價報酬的影響。國立成功大 學企業管理學系碩博士班論文,未出版。

被引用紀錄


翁若舫(2018)。台灣財務受限公司股票回購後長期績效探討〔碩士論文,淡江大學〕。華藝線上圖書館。https://doi.org/10.6846/TKU.2018.00319
蔡靈涵(2017)。企業社會責任揭露品質與財務績效之關聯性〔碩士論文,中原大學〕。華藝線上圖書館。https://doi.org/10.6840/cycu201700753
陳珈琪(2016)。產業專家獨立董監與企業社會責任之關聯性〔碩士論文,中原大學〕。華藝線上圖書館。https://doi.org/10.6840/cycu201600415
徐維澤(2016)。以企業生命週期分析企業社會責任對財務績效的影響〔碩士論文,中原大學〕。華藝線上圖書館。https://doi.org/10.6840/cycu201600237

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