Pricing of basket options using univariate normal inverse Gaussian approximations

In this paper we study the approximation of a sum of assets having marginal log‐returns being multivariate normal inverse Gaussian distributed. We analyse the choice of a univariate exponential NIG distribution, where the approximation is based on matching of moments. Probability densities and European basket call option prices of the two‐asset and univariate approximations are studied and analysed in two cases, each case consisting of nine scenarios of different volatilities and correlations, to assess the accuracy of the approximation. We find that the sum can be well approximated, failing, however, to match the tails for some extreme parameter choices. The approximated option prices are close to the true ones, although becoming significantly underestimated for far out‐of‐the‐money call options. Copyright © 2010 John Wiley & Sons, Ltd.     

加氢站建设的经济性--UNDP-GEF加氢站设备选型

介绍了加氢站系统的组成以及加氢站建设的影响因素;同时概述了UNDP-GEF加气站项目、它的站址选择必须符合的条件和满足此项目正常运行的情况下进行设备经济的选型。     

The impact of parameter uncertainty in insurance pricing and reserve with the temperature‐related mortality model

Changes in mortality rates have an impact on the life insurance industry, the financial sector (as a significant proportion of the financial markets is driven by pension funds), governmental agencies, and decision makers and policymakers. Thus the pricing of financial, pension and insurance products that are contingent upon survival or death and which is related to the accuracy of central mortality rates is of key importance. Recently, a temperature‐related mortality (TRM) model was proposed by Seklecka et al. (Journal of Forecasting, 2017, 36(7), 824–841), and it has shown evidence of outperformance compared with the Lee and Carter (Journal of the American Statistical Association, 1992, 87, 659–671) model and several others of its extensions, when mortality‐experience data from the UK are used. There is a need for awareness, when fitting the TRM model, of model risk when assessing longevity‐related liabilities, especially when pricing long‐term annuities and pensions. In this paper, the impact of uncertainty on the various parameters involved in the model is examined. We demonstrate a number of ways to quantify model risk in the estimation of the temperature‐related parameters, the choice of the forecasting methodology, the structures of actuarial products chosen (e.g., annuity, endowment and life insurance), and the actuarial reserve. Finally, several tables and figures illustrate the main findings of this paper.     

Forecasting Temperature Indices Density with Time‐Varying Long‐Memory Models

The hedging of weather risks has become extremely relevant in recent years, promoting the diffusion of weather‐derivative contracts. The pricing of such contracts requires the development of appropriate models for the prediction of the underlying weather variables. Within this framework, a commonly used specification is the ARFIMA‐GARCH. We provide a generalization of such a model, introducing time‐varying memory coefficients. Our model satisfies the empirical evidence of the changing memory level observed in average temperature series, and provides useful improvements in the forecasting, simulation, and pricing issues related to weather derivatives. We present an application related to the forecast and simulation of a temperature index density, which is then used for the pricing of weather options. Copyright © 2011 John Wiley & Sons, Ltd.     

协议企业代储模式下应急物资储备策略及采购定价研究

应急物资企业代储是政府提高应急物资储备水平,保障物资供应能力的有效途径之一.在这一储备模式下,企业的物资储备方式选择(实物储备和生产能力储备)与对应储备量,以及政府的采购定价是最为核心的三个问题.为此,文章基于数量柔性契约构建了一个应急物资协议企业代储模型,并对该模型下的企业储备决策及政府采购定价问题进行了研究.在给出政企双方各自的最优决策后,文章发现储备周期内灾害事件的发生概率以及现货市场采购价格对双方决策具有重大影响,并进一步分析了这两因素对政府采购成本及企业利润的影响,从而为政企双方开展应急物资的储备合作提供了科学的指导依据.最后,文章通过数值模拟的方式对所得结论进行了验证.     

情绪传染、个股波动与股价同步性——来自基金重仓股的经验证据

基于基金重仓股背后的委托代理投资关系,采用开放式基金流量数据建立情绪传染指标,分别从个股层面和市场层面,考察基金投资过程中的情绪传染对重仓股个股波动和股价同步性产生的影响.研究发现,情绪传染对重仓股个股波动存在显著影响,无论乐观还是悲观情绪传染,均对重仓股波动具有推动促进作用;进一步研究发现,基金投资中的情绪传染同样会...     

基于快速分数阶Fourier变换的期权定价——以上证50ETF期权为例

受美国股市熔断影响,近期中国欧式期权波动剧烈,从而对其定价问题产生一定挑战.基于VG过程刻画上证50ETF期权标的资产对数价格变化情况,对美国股市熔断前后各9支期权数据,采用快速分数阶Fourier变换进行期权定价研究,并与实际价格进行对比.实证分析表明:在美国股市熔断期间标的资产价格波动相对剧烈时VG过程依然拟合较好,用快速分数阶Fourier变换数值方法具有一定优势.     

KMV模型在银行贷款定价中的应用

利率市场化要求银行能按风险来确定贷款利率.运用基于期权定价理论的KMV模型来得到公司的预期违约率和违约损失,从而能合理地确定贷款利率.KMV模型特别适用于银行对上市公司的贷款定价.     

浮标气象站上的光伏供电系统设计

给出了太阳能电池板对蓄电池充电环节的控制方案以及硬件电路的具体实现,其中,充电控制器是选用最基本、高可靠性的元器件自主设计而成,其内部不含有智能芯片和复杂集成电路,具有电路简单、性能稳定可靠、故障率低的特点,设计的稳压器利用开关稳压芯片作为核心元件,具有对蓄电池储能利用的高效性。同时,还对所设计电路进行了实际测试,测试结果表明本设计很好地实现了技术指标预定的功能。     

一个具有保底投资收益的投资连接寿险定价模型

针对某些投资连接寿险产品既存在最低死亡赔付又存在最低投资回报的情形,提出了一个具有保底投资收益的投资连接寿险产品(即具有双重担保收益)的定价模型,并给出了数值算例.研究结果表明,这类产品在定价时可以看作由一个具有保底收益的投资基金与一个基于死亡赔付的欧式熊市价差期权组合(EBSOP)构成,该期权组合的价值通常不容忽视;当最低死亡赔付额小于保底投资收益时,欧式熊市价差期权组合为虚值,保单可视为一个可提前执行的有保底收益的投资基金.