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博碩士論文 etd-0612119-175907 詳細資訊
Title page for etd-0612119-175907
論文名稱
Title
可轉換公司債發行之股價效應與放空
The Abnormal Stock Returns and Short Selling Activities of Convertible Bonds Issuance
系所名稱
Department
畢業學年期
Year, semester
語文別
Language
學位類別
Degree
頁數
Number of pages
58
研究生
Author
指導教授
Advisor
召集委員
Convenor
口試委員
Advisory Committee
口試日期
Date of Exam
2019-05-10
繳交日期
Date of Submission
2019-07-12
關鍵字
Keywords
可轉債套利、可轉債認購動機、異常放空、異常股價報酬、可轉換公司債
Arbitrage, Convertible bond issuance, Convertible bond, Short-selling, Abnormal stock returns
統計
Statistics
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中文摘要
本文以台灣上市櫃公司發行之國內與海外可轉換公司債為研究樣本,利用事件研究法及迴歸分析探討可轉債發行時的股價效應與放空交易。實證結果主要有兩點,其一,可轉債發行時確實存在負向異常股價報酬與異常放空交易,且國內可轉債負股價跌幅的深度與市場放空交易的程度,皆較所有(國內與海外)可轉債高;其二,可轉債的放空交易顯著影響以可轉債發行日為事件日之事件期內的累積異常股價報酬,表示發行方在發行日前後的負股價反應可能來自市場上放空的力量。該實證發現期望提供公司在以可轉債做為融資管道或管理公司財務結構方式時,能夠避免因市場雙方資訊不對稱而導致股價錯估情形,並有機會採取措施以防止發行效應導致股價下跌的幅度太深的狀況。
Abstract
Convertible bonds is a financial derivative commodity featuring both creditor and shareholder’s right. For conservative investors, holding convertible bonds can not only obtain bond yields but also capital gains. As for active investors, convertible arbitrage enables them to profit from purchasing convertible bonds and short selling the stocks, then convert the convertible bond into stocks. As the result, the incentive of holding convertible bonds become vague. Is it the bond yield or the potential arbitrage opportunity that makes it attractive?

The empirical results show that significantly negative abnormal stock returns and abnormal short-selling activities exist during the periods of convertible bonds issuance. In addition, it has the largest cumulative abnormal return and short-selling activities at the third day after convertible bonds issuance and the data only includes domestic convertible bonds. Next, short-selling significantly affects the cumulative abnormal stock returns during the convertible bonds issuance. The empirical results are expected to make enterprise to take action in order to prevent stock price from being mispriced due to information asymmetry, and the deeply negative cumulative abnormal return when they issue the convertible bonds.
目次 Table of Contents
論文審定書 i
摘要 ii
英文摘要 iii
第一章 緒論 1
第二章 文獻探討與假說發展 4
第一節 可轉換公司債 4
第二節 可轉換公司債發行動機 5
第三節 可轉換公司債發行與股價效應 6
第四節 可轉換公司債套利機會與盈餘管理 7
第三章 研究資料與方法 10
第一節 研究架構 10
第二節 資料來源與樣本選取 11
第三節 變數定義 13
第四節 研究方法 17
第四章 實證結果 24
第一節 敘述性統計分析 24
第二節 可轉換公司債發行對股價報酬之影響 32
第三節 可轉換公司債發行對放空交易之影響 37
第四節 融資放空交易與累積平均異常報酬 40
第五章 結論 44
第一節 可轉換公司債發行之股價效應與放空 44
第二節 研究限制與未來建議 45
參考文獻 47
參考文獻 References
中文文獻
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李亭儒,2010,《可轉換公司債股價與經營績效之研究》,碩士論文,中興大學財務金融研究所。
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張千雲、張眾卓與周建新,2013,《以套利與避險觀點探討可轉換公司債發行之資訊內涵》,Review of Securities and Futures Markets,25:3 41-94
曾之瑤,2009,《轉換公司債折價發行與股價反應之互動關係》,碩士論文,台灣大學財務金融研究所。
游德通,2004,《發行海外可轉換公司債對股價波動、融券餘額影響之實證研究》,碩士論文,佛光人文社會學院管理學研究所。
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英文文獻
Amihud, Y., 2002. Illiquidity and stock returns: Cross-section and time-series effects. Journal of Financial Markets, 5 (1), 31-56.
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Hillion Pierre, and Theo Vermaelen, 2004. Death spiral convertibles. Journal of Financial Economics, 71, 381–415.
Hodgson, A., Lim, W. D., Mi, L., 2018. Insider sales vs. short selling: Negative information trading in Australia. Pacific-Basin Finance Journal, 48, 72-83.
Kang, Jun-Koo, Kim, Y., Park, K. and Stulz, Rene M., 1995. Analysis of Wealth Effects of Japanese Offshore Dollar-Denominated Convertible and Warrant Bond Issues. Journal of Financial and Quantitative Analysis, 30, 257-270.
Jegadeesh, N., 1990. Seasonality in Stock Price Mean Reversion: Evidence from the U. S. and the U. K. Journal of Finance, 46, 1427-1444.
Jegadeesh. N.,S. Titman, 1993. Return to buying winners and selling losers: Implications for stock market efficiency. Journal of Finance, 48, 65-91.
Lehmann, B. N., 1990. Fads, martingales, and market efficiency. Quarterly Journal of Economics, 105(1), 1-28.
Myers, S. C., and Majluf, N. S., 1984. Corporate Financing and Investment Decisions: When Firms Have Information that Investors Do Not Have. Journal of Economics, 13 : 187-221.
Roon, Frans de and Chris, V., 1998. Announcement Effects of Convertible Bond Loans and Warrant-Bond Loan: An Empirical Analysis for the Dutch Market. Journal of Banking and Finance, 22, 1481-1502.
Stein, J., 1992. Convertible Bonds as Backdoor Equity Financing. Journal of Financial Economics, 32, 3-21.
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