网络公司价值评估方法的比较研究

网络的出现改变了人们生活和工作的方式,也为这个社会带来了巨大的商机。随着网络公司如雨后春笋般的出现以及网络股在市场中的表现,评估师们面临这样一个问题：如何评估网络公司的价值？网络公司作为一种新的组织形式,在运用传统的价值评估方法对网络公司进行价值评估时遇到了瓶颈。如何正确地看待网络公司的价值这一问题,亟待解决。     

隐含波动率的信息含量及其在我国的应用

国内现有关于波动率的研究多集中于时间序列模型,忽略了另一类预测波动率的方法即隐含波动率法。文章在回顾、评述了国内关于波动率的研究后,对国外关于隐含波动率的研究进行了梳理,为在我国大陆地区发展股指期权市场、通过提高期权市场的效率,以运用隐含波动率法更好地预测波动率提供了理论基础和政策建议。     

基于因子分析的上市公司股票期权业绩评价研究

本文选择17项指标构建上市公司经营业绩评价体系,选取30家实施股票期权计划的上市公司作为研究样本用统计软件SPSS17.0进行因子分析,得出反映上市公司综合业绩的7个因子,并计算因子得分和综合得分.研究结果为上市公司进行综合业绩评价提供了科学的理论和方法.     

专利实物期权定价的蒙特卡罗模拟方法及其改进技术

专利作为现代企业重要的无形资产,对企业募集发展资金、扩大收益回流、形成竞争优势发挥着巨大的作用,因此专利定价问题也成为现代企业管理决策中的重要内容.本文基于专利的实物期权特征,运用蒙特卡罗模拟方法对专利的实物期权定价问题进行研究与探讨.首先,分析探讨专利投资项目的决策过程及其实物期权特征;在此基础上,建立专利定价的实物期权蒙特卡罗模拟模型,并引入对偶变量技术用以提高蒙特卡罗模拟的效率;最后,以生物医药企业专利定价为例进行实证模拟.研究结论认为,引入适当方差减少技术的蒙特卡罗模拟则成为专利实物期权定价的一种有效的分析方法.     

中国金融创新的政策选择、法律制约与制度突破

创新是中国金融业改革发展的客观要求。虽然金融创新的过程中伴随着各种风险的产生,但这并不能成为抑制金融创新的理由。后金融危机时代的中国金融业应该继续加大创新力度,提高金融市场的竞争能力,在金融创新产品的专利权保护、金融监管、金融业的内部风险管理和外部政策完善等方面寻求制度突破。     

BLACK–SCHOLES REPRESENTATION FOR ASIAN OPTIONS

Asian options are securities with a payoff that depends on the average of the underlying stock price over a certain time interval. We identify three natural assets that appear in pricing of the Asian options, namely a stock S, a zero coupon bond B^T with maturity T, and an abstract asset A (an “average asset”) that pays off a weighted average of the stock price number of units of a dollar at time T. It turns out that each of these assets has its own martingale measure, allowing us to obtain Black–Scholes type formulas for the fixed strike and the floating strike Asian options. The model independent formulas are analogous to the Black–Scholes formula for the plain vanilla options; they are expressed in terms of probabilities under the corresponding martingale measures that the Asian option will end up in the money. Computation of these probabilities is relevant for hedging. In contrast to the plain vanilla options, the probabilities for the Asian options do not admit a simple closed form solution. However, we show that it is possible to obtain the numerical values in the geometric Brownian motion model efficiently, either by solving a partial differential equation numerically, or by computing the Laplace transform. Models with stochastic volatility or pure jump models can be also priced within the Black–Scholes framework for the Asian options.     

Test for the real option in consumer behavior

Consumers become indecisive when facing too many choices. Economic analysis suggests that when a decision involves uncertain outcome, can be delayed and is irreversible, there will be a real option in the cost–benefit analysis. For example, the option to keep alive a consumer's purchasing decision has a significant value. It allows the consumer to take advantage of any future advantageous deals while avoiding the bad choices. This renders the consumer more hesitant. When a consumer decides to exercise his buying decision, he demands a compensation for the loss of this option. Hence, the benefits of a purchase must be over and above its costs by a wide margin (the option value). Data from a survey at a Turkish university on hypothetical purchase decisions confirmed the existence of this real option. We conclude with marketing policy recommendations and future research directions. Connection to the Prospect Theory is briefly explored.Note: Although the 3rd person singular pronoun he/his was used throughout to describe the consumer, he was intended to be gender-neutral.     

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。     

Capital budgeting, information timing, and the value of abandonment options

This paper investigates how an abandonment option influences the optimal timing of information in a sequential adverse selection capital budgeting model. While the divisional manager has imperfect private pre-contract information, headquarters can time whether the manager obtains perfect project information before (timely information) or after (delayed information) the contract is signed. In the absence of the abandonment option, headquarters favors timely (delayed) information if the investment costs are high (low). The presence of the abandonment option favors delayed information because under the timely information regime the value of the abandonment option is zero, whereas under the delayed information regime the value of the option is positive.