一种有约束最优投资随机微分方程的构建

以确定最优的消费和投资策略为手段,在满足金融投资者一段时间内所拥有资产效用最大时,构建一种考虑存在交易费用和投资组合约束、更接近实际的、具有明显经济理论意义的随机微分方程,得出其最优解等结论,并对之进行了论证研究。     

Stock options as barrier contingent claims

A comprehensive model is suggested that values securities as options and consequently ordinary stock options as compound options. Extending the basic Black–Scholes model, it can incorporate common contractual features and stylized facts. More specifically, a closed form solution is derived for the price of a call option on a down‐and‐out call. It is then shown how the result obtained can be generalized in order to price options on complex corporate securities, allowing among other things for corporate taxation, costly financial distress and deviations from the absolute priority rule. The characteristics of the model are illustrated with numerical examples.     

浅探票据行为的解释原则

票据实践中，某一行为是否有效，除判断是否符合法律的规定之外，往往涉及票据行为的解释，票据行为的解释，遵循法律行为的解释的一般原则，但是票据流通的安全性对票据行为的解释提出了特别的解释要求，只有将证券解释和法律解释相结合，才能有效地解决票据行为是否有效、票据关系是否发生的法律问题。     

我国创业板退市制度的问题与对策

从我国创业板退市制度的功能定位出发,比较了我国创业板与主板市场及海外创业板在退市标准、退市管理和转板制度上的区别,分析了我国创业板退市制度在有效保护投资者利益、信息披露质量等方面的不足,并从找准创业板市场定位、细化退市操作规则、引入做市商制度、制定适当的转板制度、充分发挥媒体监督作用、完善退市责任追究机制和民事诉讼赔偿制度等方面提出完善创业板市场退市制度的对策。     

我国投资性艺术品金融化发展及路径选择

随着我国艺术品市场从商品市场向资本市场的过渡,蕴含在艺术品之中的金融属性开始显现。在市场供需合力推动下,我国投资性艺术品的金融化成为艺术品市场发展的方向之一。我国投资性艺术品在金融化过程中存在艺术品评估体系不健全、交易登记制度落实不到位及专门性监管机构缺位等问题。鉴于此,应在逐步完善艺术品金融化发展环境的基础上构建艺术品发行市场、艺术品流通市场并行的双向发展路径,最终实现金融市场与艺术品市场的有效对接。     

融资融券业务中可充抵保证金担保证券折算方法研究

在证券市场融资融券业务中确定可充抵保证金担保证券折算率,是融资融券业务风险管理中的一个重要环节.针对股票类可充抵保证金担保证券,本文从系统性风险、行业风险、公司风险以及流动性风险、变现能力等方面进行分析,构建了可充抵保证金担保证券折算率计算模型,提供模型估值结果、市场风险评价结果等各类指标值,并以某证券公司为例,对房地产行业股票保利地产作为可充抵保证金进行实证分析.     

Optimal financing and dividend control of the insurance company with excess-of-loss reinsurance policy

In this paper, we consider an optimal financing and dividend control problem of an insurance company. The management of the insurance company controls the dividends payout, equity issuance and the excess-of-loss reinsurance policy. In our model, the dividends are assumed to be paid out continuously, which is of interest from the perspective of financial modeling. The objective is to find the strategy which maximizes the expected present values of the dividends payout minus the equity issuance up to the time of ruin. We solve the optimal control problem and identify the optimal strategy by constructing two categories of suboptimal control problems.     

A model evaluating effect of disaster warning issuance conditions on “cry wolf syndrome” in the case of a landslide

This study proposes a model that clarifies how disaster warning issuance conditions affect “cry wolf” syndrome. The disaster assumed in this study is landslide caused by heavy rainfall. Local authorities that issue disaster warnings are thought to tend to avoid the situation where casualty occurs without the issuance to residents of a disaster warning. As a result, the issuance conditions may be relaxed. Under this circumstance, however, the residents are thought to tend to ignore disaster warnings, since such warnings are inaccurate. Thus may emerge the “cry wolf” syndrome. In this study, a simulation model that expresses the behaviors of the local authority and the residents has been developed. For the purpose of demonstrating the model, numerical experiments were then carried out. In the numerical experiments, the effects of optimal issuance conditions for disaster warnings on the cost incurred by the resident were evaluated by using assumed parameters for the model.     

On Valuation of Derivative Securities: A Lie Group Analytical Approach

This paper proposes a Lie group analytical approach to tackle the problem of pricing derivative securities. By exploiting the infinitesimal symmetries of the Boundary Value Problem (BVP) satisfied by the price of a derivative security, our method provides an effective algorithm for obtaining its explicit solution. This work was supported by Research Grants Council of HKSAR (Project No. HKU 7239/04H) and the Small Project Funding Programme of HKU.     

现阶段我国证券市场存在的主要问题及对策

随着我国社会主义市场经济体制的确立 ,我国证券市场的发展取得了长足的进步 ,但由于我国证券市场仍然处于初级阶段 ,尚待不断完善和健全。因此 ,本文就现阶段我国证券市场存在的主要问题进行了阐述 ,并提出几点对策。