含股权回售与赎回条款的或有可转债定价研究
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秦学志(1965—) ,男,辽宁大连人,博士,教授,博士生导师. Email:qinxz@ dlut. edu. cn

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国家自然科学基金资助项目(71471026;71171032; 71101015)


Pricing of share-putable & callable Co Cos
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    摘要:

    为兼顾发行方与投资者的利益,确保融资效率,本文设计了含股权回售与赎回条款的或有可转债(share-putable & callable CoCos,SPCCs) 。首先将其分解为普通或有可转债多头、下降 -敲入看跌障碍期权多头以及上升-敲入看涨障碍期权空头的组合; 然后针对债券价值的“路径依赖”特征,引入Jarrow-Turnbull 模型确定生存概率,继而推导出以股价为触发器的SPCCs定价公式; 最后针对瑞信集团(credit suisse) 2011年2月发行的或有可转债进行实证分析。结果表明: SPCCs价格与债转股触发强度增速显著负相关; 同时发行方股价波动率会对SPCCs 价格产生间接影响,且影响方向取决于“CoCos价值随股价波动率的增加幅度”与“股权回售与赎回条款价值随股价波动率的减少幅度”孰大孰小

    Abstract:

    In order to consider simultaneously the interests of issuers and investors, and ensure the financing efficiency, this paper designs a share-putable & callable CoCos ( “SPCCs”for short) . Firstly, the SPCCs is transformed into the composition of a long common contingent convertible bond, a long down-and-in put barrier option, and a short up-and-in call barrier option. Secondly, considering the bond’s path-dependent characteristic, this paper introduces the Jarrow-Turnbull model to determine the survival probability, and deduces a pricing model of SPCCs whose triggers are assigned with stock prices. Finally, the Co Cos issued by Credit Suisse in February 2011 are used for an empirical analysis, and the results show that: the SPCCs price is significantly negatively related with the trigger intensity growth of debt-to-equity swap; meanwhile, the volatility of the issuer’ s stock prices indirectly produces an influence on the SPCCs price, and the influence direction depends on the difference between increases in the CoCos and the decreases in the provision of the share-puttable & callable with the volatility of issuer’s stock prices.

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秦学志,胡友群,石玉山.含股权回售与赎回条款的或有可转债定价研究[J].管理科学学报,2016,19(7):102~114

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  • 在线发布日期: 2018-04-12
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