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盈餘管理與我國上市櫃公司股票購回後之營運績效

Earnings Management and Operating Performance of Taiwanese Firms after Open-Market Share Repurchases

摘要


國內外研究一致指出,市場投資人對股票購回宣告存在正向反應。國外文獻且證實企業在宣告股票購回後,營運表現會隨之轉佳。然而國內相關文獻卻發現,我國股票購回公司在購回宣告後,營運績效反而有衰退之情形。為探討我國股票購回公司之宣告後績效並未有所改善的成因為何,本文提出盈餘管理假說作為可能之解釋。實證結果顯示,股票購回公司會在購回宣告前藉提高可裁決性應計項目進行正向盈餘管理,但購回宣告後,因可裁決性應計項目回轉而造成營運績效衰退之現象。因此,本文證實了盈餘管理的確是我國股票購回公司宣告後績效不彰之可能原因。此外,本文尚發現我國分析師可察覺股票購回公司在宣告前的盈餘管理行為,並在購回宣告前後調降盈餘預測。

並列摘要


Prior studies report that investors react positively on the announcements of open-market share repurchases. The U.S. evidence further reveals that share-repurchasing firms enjoy improvement in operating performance after the announcements. The evidence from the Taiwan market, however, reports post-announcement underperformance instead. To investigate the possible explanation for the distinct difference between the two markets, this paper studies share repurchase events in Taiwan and proposes the earnings management hypothesis. The results show that share-repurchasing firms inflate their earnings before the repurchase announcements by adjusting discretionary accruals upwards. After the announcements, the reversion of discretionary accruals results in the underperformance. Therefore, the earnings management hypothesis is strongly supported. In addition, this paper finds that analysts can detect the earnings management of repurchasing firms and lower the earnings forecasts correspondingly.

參考文獻


王祝三(2008)。台灣企業股票購回動機與財務訊號有效性決定因素之研究-庫藏股與子公司買回之比較。財務金融學刊。16(4),1-60。
高寶勝(2002)。股票購回動機與訊號假說之驗證(碩士論文)。中山大學財務管理研究所未出版之碩士論文。
陳嘉惠、劉玉珍、林炯垚(2003)。公開市場股票購回影響因素分析。證券市場發展季刊。15(3),27-61。
趙正宇(2002)。實施庫藏股對企業經營績效之影響-以台灣電子資訊廠商爲例(碩士論文)。交通大學經營管理研究所未版之碩士論文。
Bartov, E.(1991).Open-market stock repurchases as signals for earnings and risk change.Journal of Accounting and Economics.14(3),275-294.

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藍子雯(2010)。盈餘管理對公司宣告購回庫藏股後長期績效之影響〔碩士論文,亞洲大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0118-1511201215464661
林佳蓉(2011)。Ohlson修正式現金會計模型下-綜合現金盈餘對企業價值之資訊內涵研探〔碩士論文,朝陽科技大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0078-1511201110381360
陳韻如(2014)。台灣新上市、櫃公司實行股票購回政策之動機與績效〔碩士論文,國立中正大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0033-2110201613581175

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