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首页> 外文期刊>Journal of Economic Dynamics and Control >Extracting market information from equity options with exponential Levy processes
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Extracting market information from equity options with exponential Levy processes

机译:使用指数征费流程从股票期权中提取市场信息

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Levy processes have been successfully applied in the modeling of financial assets. Useful information such as implied volatility, skewness, and risk-preferences can be derived from market option prices. In this paper, we advocate using Esscher conjugate Levy processes to estimate risk-neutral and empirical densities. More specifically, we employ the exponential Meixner and NIG processes to calculate in closed form the pricing kernel in the equity market and then study the evolution of equity market behavior between 2002 and 2010. Our empirical analysis using S&P 500 options shows that the risk preferences of equity investors were signalling an anomaly in the market well before the subprime prime mortgage crisis (August 2007) and the crisis of confidence that followed, anticipating the downfall in equity markets in 2008, but then returning to normal levels in 2009.
机译:征费流程已成功应用于金融资产建模。诸如隐含波动率,偏度和风险偏好之类的有用信息可以从市场期权价格中得出。在本文中,我们提倡使用Esscher共轭征费过程来估计风险中性和经验密度。更具体地说,我们采用指数的Meixner和NIG方法以封闭形式计算股票市场中的定价核心,然后研究2002年至2010年之间股票市场行为的演变。我们使用标准普尔500期权进行的实证分析表明,风险偏好为早在次优抵押贷款危机(2007年8月)和随之而来的信心危机之前,股票投资者就已经预示着市场出现异常现象,他们预计2008年股市将下跌,但在2009年将恢复正常水平。

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