Does increased hedging lead to decreased price efficiency? The case of VIX ETPs and VIX futures

We examine the impact of the introduction of VIX exchange‐traded products (ETPs) on the information content and pricing efficiency of VIX futures. We document that trades in VIX futures have become less informative and that pricing errors exhibit more persistence after the introduction of VIX ETPs. In addition, we observe that the price process of the VIX futures has become noisier over time. These findings suggest that the introduction of the VIX ETPs had a prominent effect on the properties and dynamics of the VIX futures.     

Pricing mortgage insurance contracts under housing price cycles with jump risk: evidence from the U.K. housing market

Previous studies have investigated the determinants of housing price cycles in the housing market; however, we observed the phenomenon of housing price jumps in the 2007 subprime crisis. This paper presents a discussion on the housing price cycle and abnormal price jumps to describe the behavior of housing prices in the United Kingdom. The empirical results show that the impact factors of housing cycles are market risk and the switching factor. Furthermore, the impact factors of jump risks include the bursting of the housing bubble and financial crises. Therefore, in this paper, we employ the Markov switching model with jump risks to value the MI contracts and analyze the influences of housing price cycles, jump risks, risks of market interest rate, and the prepayment risks on MI premiums. The results of sensitivity analysis show that more volatile housing price index returns, as well as longer periods of higher volatility in housing prices, raise MI premiums. Moreover, the MI premium is positively related to the absolute value of the average jump amplitude and the shock frequency of abnormal events. There is the tradeoff between the market interest rate and the prepayment risk. The influences of market interest rate are different on MI premium with/without prepayment risks.     

采用PPP模式建设公租房是否可行？——基于效用理论视角的比较研究

从利益相关者的效用和福利的角度,构建PPP模式和公共管理模式建设公租房的比较模型,分别分析在信息对称情形下和信息不对称情形下的比较结果.研究发现:在信息对称情形下,PPP模式建设公租房所产生的福利永远不可能高于公共管理模式;然而更加贴近实际的是信息不对称情形,此情形下,政府的资金约束愈大,项目的风险愈大,采用PPP模式愈优.     

人员流动与城市间商品价格差异:来自高铁开通的证据

本文以中国高铁开通这一自然实验,采用2001-2016年172个地级市的微观商品价格数据,运用倍差法研究人员流动对城市间商品价格差异的影响。研究表明,高铁开通带来的人员流动,能通过促进要素市场一体化和地区间商务往来,显著降低城市间商品价格差异,由此促进地区间产品市场的一体化。通过更换多个代理变量、控制时间趋势、使用基于随机模拟方法的安慰剂检验和事件分析法等多种方法进行稳健性检验,并分别构建了基于最低成本原则和最短距离原则的最小生成树作为两个工具变量来处理内生性问题后,研究结论依然成立。进一步研究表明,高铁开通能推动区域内、区域间以及不同行政级别城市间的经济一体化;高铁站的合理选址与高铁线路的合理设计对充分发挥高铁开通的作用有重要影响。     

中国移动通信业价格竞争本质解析

中国移动通信业的价格竞争,经过了无价格竞争阶段、显性价格竞争阶段、隐性价格竞争阶段、后价格竞争阶段的演化,体现了制度调节与市场选择并行的内在规律性,也增进了市场协调、提高了市场效率。中国移动通信业价格竞争具有非合作博弈的特性,行业管制与市场选择共同推动了竞争的有序化。因此,要实现中国移动通信市场的有效竞争,市场机制的作用是有限的,还离不开适当的政府行政参与下的不对称管制政策,而且不对称管制政策也需要根据市场变化进行调整和改进。     

Pricing dynamics in US fresh produce channels: new empirical evidence

Despite many valuable contributions, prior research has not completely explained retail pricing behavior. This study employs scanner data for 36 fresh produce items analyzing the relationship between costs of goods sold and retail prices to provide further insight into retail pricing behavior. Implications include: (1) where ‘natural’ variation in produce prices do not already exist from the supplier, retailers appear to introduce the variation themselves, independent from shipping point price; and (2) to the extent that supplier-retailer contracts for fresh produce develop, the resulting stabilizing influence on costs may have the preserve effect of increasing retail price variability to consumers.     

影子价格与产品成本

借用线性规划的数学模型,推导影子价格与实际价格及产品成本之间的关系,并运用此关系阐明了在各种情况下,如何利用影响子价格所提供的信息,作出正确调配资源的决策。     

马克思供求理论研究

马克思的供求理论是其劳动价值论体系的重要组成部分 ,供求理论的建立是马克思劳动价值论体系的最终完成。马克思关于供给与需求及其关系、市场供求与市场价值、市场供求与市场价格、市场供求与市场竞争等问题的论述是供求理论的重要内容。学习和运用马克思的供求理论 ,对于完整理解马克思的劳动价值理论 ,对于完善市场机制运行和促进市场经济发展具有重要意义。