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考慮信用評等、股權結構內生關係下的IPO期初報酬率

The IPO Initial Returns under the Endogenous Relationship between Credit Ratings and Ownership Structures

摘要


本研究利用兩階段最小平方法(Two-stage Least Squares, 2SLS)來討論民國84年至94年間信用評等、董事會和股權結構與IPO(initial public offerings)期初報酬率之間的關連性。本文發現董事會結構與股權結構確實會影響公司的信用評等,結果指出董事會規模愈大和外資持股愈多的公司,其信用評等愈高;但大股東持股比例和信用評等則呈負相關。再者,我們也發現信用評等愈佳的公司,其IPO期初報酬率相對較高,即信用評等是決定投資IPO股票是否有高報酬率的重要指標。另外,與先前研究一致,本文發現內部人及機構持股比例愈高的公司,其IPO的期初報酬率愈低。最後,在利用事件研究法及買入持有異常報酬率來觀察IPO公司在上市後的績效表現,發現信用評等較佳的公司之績效相對優於信用評等不佳的公司。

並列摘要


This study employs the two-stage least squares (2SLS) approach to examine the IPO initial returns under the endogenous relationship between credit ratings and ownership structures from 1995 to 2005. Our empirical findings indicate that the board size and foreign institutional shareholdings have significantly positive effects on credit ratings, but the blockholder's shareholdings have inverse effects on credit ratings. In addition, we find that credit ratings and IPO initial returns are positively related and statistically significant. This result supports the signaling theory of IPO underpricing. Furthermore, the findings also show that the level of credit ratings is the most important indicator for investors when they consider investing the IPO stocks. Finally, after observing the aftermarket performance for IPO stocks through event study and buy-and-hold abnormal return approach, we find that firms with good credit ratings have relatively better performance than those with bad ratings.

參考文獻


林象山、許清華(1997),「新上市股承銷方式的選擇」,《中國財務學刊》,第5卷第1期,19-41。
馬黛與胡德中(2003),「承銷配售機制之決定及其對IPO折價之影響:競價拍賣、詢價圈購與公開申購」,《財務金融學刊》,第11卷第1期,1-40。
陳安琳(2001),「各種衡量模型下新上市公司股票的長期報酬」,《中國財務學刊》,第9卷第3期,1-20。
陳安琳、李文智與林宗源(1999),「新上市公司股票之發行折價:代理成本與公司控制之研究」,《中國財務學刊》,第6卷第3期,1-23。
Aggarwal, R. and P. Rivoli (1990), "Fads in the Initial Public Offering Market?" Financial Management, Vol. 19, 45-57.

被引用紀錄


林玫君(2017)。中國公司治理、股權結構與股利政策在IPO制度變動下之實證研究〔碩士論文,中原大學〕。華藝線上圖書館。https://doi.org/10.6840/cycu201700415
陳彥良(2016)。IPO之承銷商配售行為與報酬率、後市流動性的關聯性〔碩士論文,國立臺中科技大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0061-0308201616203100

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