MCMC ESTIMATION OF LÉVY JUMP MODELS USING STOCK AND OPTION PRICES

We examine the performances of several popular Lévy jump models and some of the most sophisticated affine jump‐diffusion models in capturing the joint dynamics of stock and option prices. We develop efficient Markov chain Monte Carlo methods for estimating parameters and latent volatility/jump variables of the Lévy jump models using stock and option prices. We show that models with infinite‐activity Lévy jumps in returns significantly outperform affine jump‐diffusion models with compound Poisson jumps in returns and volatility in capturing both the physical and risk‐neutral dynamics of the S&P 500 index. We also find that the variance gamma model of Madan, Carr, and Chang with stochastic volatility has the best performance among all the models we consider.     

Illiquidity Premium in the MILA

This article analyzes the illiquidity premium in the MILA. Using seven proxies for illiquidity, we find a positive and significant illiquidity premium for our sample. A microstructure bias-free portfolio weighting based on past returns is critical in our finding of an illiquidity premium, which is robust to several methodological changes in our portfolio simulations. We also document that the premium is present only in small and high book-to-market stocks. Nonetheless, when we control for size and distress effects, the difference and significance in risk-adjusted returns between portfolios of high and low illiquidity stocks remains.     

Waves and Determinants in Mergers and Acquisitions: The Case of Latin America

This article contributes to the current literature on mergers and acquisitions (M&As) by identifying the existence of waves and the determinants of M&A activity in the economies of Argentina, Brazil, Chile, Colombia, Mexico, and Peru. From a sample of 2,391 M&A announcements reported by Thomson One on these countries, applying the methodology proposed by Harford (2005), evidence of M&A waves is found for the periods 1995–2002 and 2003–2010, as reported for other regions in various international studies. After controlling for economic and business environment variables, as well as for profitability and book-to-market variables at the industry level, we find evidence that supports neoclassical theory as a main explanation for M&A activity but not for the misvaluation effect.     

英美文学经典融入大学英语教学的路径

英美文学经典能够激发学生的阅读兴趣,提升学生的思辨能力,提高学生的伦理道德修养以及审美情趣.应修订大学英语教学大纲,增设与英美文学相关的拓展课程,有针对性地选编教材,改进教学模式,将文学经典融入大学英语教学.     

多寡头不确定条件下的矿山企业期权博弈基本价值研究

期权博弈方法把实物期权和博弈论结合起来,在不确定性条件和竞争环境下,为企业提供项目的投资估价和决策,以实现投资项目价值的最大化。竞争环境下的矿山企业博弈参与方不再局限于对称双寡头,而是考虑了序贯均衡阶段的多寡头矿山企业,在进行项目投资决策时,可假设投资初期成本各不相同,建立多寡头矿山企业期权博弈基本价值的价值函数和最佳投资时机进行研究。     

我国股票期权企业所得税税收政策研究

2005年财政部、国家税务总局发布了《关于个人股票期权所得征收个人所得税问题的通知》(财税〔2005〕35号),首次明确了要对员工取得的股票期权收入征收个人所得税。但对于企业所得税方面的规定目前还是空白,需要尽快出台与股票期权激励计划有关的企业所得税方面的政策,以促进其发展。本文首先介绍我国的股票期权税收政策;其次对股票期权涉及的企业所得税方面的问题进行了探讨;最后对我国在制定股票期权企业所得税政策时须注意的问题提出了建议。     

影片《功夫熊猫》中美国文化的模因分析

模因论是解释文化进化规律的一种新理论。运用模因论对美国动画电影《功夫熊猫》进行研究，可探讨其中独特的美国文化模因，即个人主义的复制及传播。     

美国合伙制投资银行向公众公司的转变

美国投资银行起步于合伙制商号，为适应市场环境和监管规则的变化以及由此产生的内部管理需要，20世纪70年代合伙制投资银行开始向公众公司转变。由于股份制投资银行股权过度分散和股权集中度低，导致了股东对公司控制力和决策权下降，形成了“强管理层、弱股东”的委托-代理结构，造成激励约束不对等的内部治理环境，为金融危机的爆发埋下了隐患。