可轉債選擇權評價與模擬;+C3897Call Option on CB - Structure and Pricing Call Option on CB -Structure and Pricing

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題名:	可轉債選擇權評價與模擬;+C3897Call Option on CB - Structure and Pricing Call Option on CB -Structure and Pricing
作者:	賴曉薇;Hsiao-Wei Lai
貢獻者:	財務金融研究所
關鍵詞:	資產交換;選擇權評價;可轉換公司債;可轉債選擇權;信用風險;Asset Swap;Call option;Convertible Bond;Credit Risk;CB option;Option Valuation
日期:	2002-04-30
上傳時間:	2009-09-22 14:33:41 (UTC+8)
出版者:	國立中央大學圖書館
摘要:	可轉換公司債兼具權益與負債等混合性證券特質，本文將研究其結構拆解後之可轉債選擇權評價與模擬。在文中將介紹可轉債資產交換交易之交易結構與相關交易合約，並引進Least-Square蒙地卡羅法，針對可轉換公司債選擇權，建構股價、利率及信用風險等三因子模型，模擬其演變路徑而進行選擇權評價。自敏感度分析，研究歸納三個主要影響可轉債選擇權價值之因素: (1)可轉換公司債信用評等(2)可轉換公司債賣回溢價(Yield to Put) (3)利率水準。評價過程中，本研究同時模擬可轉換公司債與可轉債選擇權之價值，並將模擬所得之可轉換公司債價值減去轉換價格，作為可轉債選擇權價值之比較基礎。研究發現信用評等不佳之公司債，因破產風險升高將導致債券價值驟減，反之，其選擇權因握有免於承受破產風險而仍享有可轉債收益之機會，投資人將相對偏好持有可轉債選擇權；可轉債賣回溢價減少，將降低可轉換公司債到期之期望收益，可轉債選擇權價值則相對較高；當初始利率增高，債券價值將降低，可轉債選擇權則相對具有價值。此研究結果，將提供券商及投資人對於可轉債交換交易與可轉債選擇權之發行標的、發行時機與選擇權評價，作為相關之參考文獻。 This paper investigates call option pricing of the stripping of convertible bonds into equity component and debt component. We introduce the asset swap business structure and corresponding transaction contracts. In addition, we use a Least-Square Monte Carlo simulation approach to price call option on CB with three state variables, stock price, risk-free interest rate, and credit risk. From the sensitivity analysis, we found three interesting issues. One is a call on CB with low initial credit rating is relatively valuable comparing to CB value in excess of strike price 100, which represents Intrinsic Value of call on CB. It indicates that holding a call on CB has opportunity to take advantage of equity but not take loss of bankruptcy. Another is that the setting of yield to put of CB will significantly influence the inclination toward holding CB or buying a call on CB for investors. A call on CB is relatively valuable when put price of CB is low. The other is that the equity features of call option will be more notable as the interest rate is higher. The value of a call on CB apparently increases as the risk-free interest rate increases while its Intrinsic Value decreases. Our simulation concludes that the CB call option will be mostly affected by (1) issuer credit (2) put price (3) interest rate level.
顯示於類別:	[財務金融研究所] 博碩士論文

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