VaR

  • 详情 热钱流动对资产价格波动和金融脆弱性的影响
    本文在对热钱流动导致资产价格波动进而影响金融脆弱性的进行系统论述的基础上,基于国内2003年1月至2011年12月月度股票收益率和房屋价格指数,利用SVAR模型研究了热钱对我国股票市场和房地产市场价格的影响。结果表明,热钱对股票市场和房地产市场有着长期均衡关系,热钱流入显著推动了股票价格指数上涨,并得到股票收益率波动的30%是由热钱异动所致,但热钱对房屋价格指数影响相对较小,表现在房价变动中20%与热钱流动有关;另一方面发现股价上涨同时对房地产市场价格有着正向影响,被抬高的房价会进一步吸引热钱的流入。基于热钱对金融稳定与脆弱性的影响,提出了完善人民币汇率和利率机制,合理疏导等治理热钱的政策建议。
  • 详情 International Portfolio Selection with Exchange Rate Risk: A Behavioural Portfolio Theory Perspective
    This paper analyzes international portfolio selection with exchange rate risk based on behavioural portfolio theory (BPT). We characterize the conditions under which the BPT problem with a single foreign market has an optimal solution, and show that the optimal portfolio contains the traditional mean–variance efficient portfolio without consideration of exchange rate risk, and an uncorrelated component constructed to hedge against exchange rate risk. We illustrate that the optimal portfolio must be mean–variance efficient with exchange rate risk, while the same is not true from the perspective of local investors unless certain conditions are satisfied. We further establish that international portfolio selection in the BPT with multiple foreign markets consists of two sequential decisions. Investors first select the optimal BPT portfolio in each market, overlooking covariances among markets, and then allocate funds across markets according to a specific rule to achieve mean–variance efficiency or to minimize the loss in efficiency.
  • 详情 跨境贸易人民币结算现状及影响因素实证研究
    跨境贸易人民币结算推行以来,进口人民币结算额远大于出口人民币结算额。本文就这一问题分 析了人民币结算的福利情况及现有研究进展,并利用 VAR 模型从实证角度分析了跨境贸易人民币结算的影 响因素。脉冲响应分析表明,中美利差扩大和人民币升值预期将导致人民币结算额上升,中美通货膨胀率 差扩大和我国占全球贸易份额上升将导致人民币结算额下降,加工贸易使人民币结算额先上升后下降,金 融市场发展的影响不确定。方差分解表明,中美利差对人民币结算额变动的影响远大于其他几个因素,其 余依次为中美通货膨胀率差、人民币汇率预期、加工贸易、我国占全球贸易份额和金融市场发展,这表明 套汇套利是人民币结算的主要影响因素。
  • 详情 外汇市场干预、汇率变动与股票价格波动——基于时变视角的理论分析与实证研究
    随着金融自由化和全球一体化的加深,资本市场与外汇市场的关系愈加紧密。本文首次从投资者异质性和外汇干预的角度建立理论模型探讨汇率与股价之间的动态关系,模型结果显示汇率与股价之间的关系具有是时变性,且投资者异质性是导致时变性的重要因素。在理论模型的基础上,通过采用SV-TVP-SVAR模型,利用2005年汇改后的数据实证研究了人民币汇率与我国股价之间的时变动态关系,实证结果表明汇率与股价之间的关系呈现出显著地时变性;汇率变动与股价波动之间不一定存在汇率升值——股价上涨的同期关系,但对于我国而言,2009年之前存在人民币升值——股价上涨的联动效应,但2009年之后却出现人民币升值——股价下跌的联动效应。
  • 详情 面向国债动态积极投资策略的多阶段随机规划模型
    本文提出国债组合投资的多阶段随机规划模型,导出基于未来利率市场不确定信息的具备动态调整 特点的国债组合积极投资策略。该模型采用利率水平、斜率和曲率的“三位一体”的离散情景树刻画未来 利率期限结构动态演化过程,其中特别考虑了广义货币供给变动的影响;通过最小化国债组合收益的CVaR 风险,对国债组合进行积极动态配置;同时兼顾国债投资安全性、流动性和收益性等要求,实现了国债组 合投资与管理中利率风险规避和收益能力的有效匹配。实证研究表明,与传统久期配比免疫模型相比,该 模型确定的最优策略不仅能够为国债组合提供更强的抵御利率风险能力,同时能够稳步提升其收益空间, 对于金融机构实现国债投资的积极管理具有重要参考价值。
  • 详情 基于金融创新的我国货币政策中介目标实证研究
    金融创新会对一国货币政策中介目标产生影响。运用向量自回归(VAR)方法分析金融创新对我国货币政策中介目标的具体影响、金融创新影响下货币供应量是否还适合继续作为我国货币政策中介目标问题。实证结果得出金融创新影响了我国货币政策中介目标的可测性、可控性以及货币供应量与最终目标之间的相关性,但是目前我国货币供应量中介目标可以继续使用,货币供应量M2作为我国货币政策中介目标的效果优于货币供应量M1。
  • 详情 短期SHIBOR的波动性及溢出效应研究:2007-2011
    我们以2007年到2011年五个整年的日度数据为样本,通过ARCH族模型和VAR模型分别探讨期限为隔夜、一周、二周、一个月4个品种短期shibor各自的波动性和相互之间的波动溢出效应。各品种短期shibor的波动存在非对称效应,正向冲击引起的波动大于同幅度负向冲击引起的波动的上升。某一品种的短期shibor的波动对其他品种短期shibor的波动会产生同方向的溢出效应,不同品种短期shibor所造成的波动溢出效应也有较明显的差异。
  • 详情 对江苏省企业人民币计价出口决定要因的实证研究
       计价货币(Invoice Currency)是国际货币(International Currency)在私人部门作为价值基础的重要职能,其在国际贸易中的结算比率也是判断某种货币国际化程度的重要指标之一。本文根据既有的计价货币选择理论,在对96家江苏省出口企业进行问卷调查的基础上,通过构建Probit个体二分变量计量模型,在价格政策制定这一微观层面上对企业以人民币计价出口的决定要因进行了详细的实证研究。实证分析表明:企业类型为跨国公司关联企业或出口加工型企业、企业出口产品为半成品的,与企业以人民币计价出口呈显著或较为显著的正相关关系;而企业出口地为美国或欧元区国家以及其他发达国家的,则与之呈较为显著的负相关关系。这一结果表明:从促进人民币国际化的角度来看,有必要进一步开放人民币的资本项目的管制,方便跨国公司一类企业进行一定的人民币理财活动,促使其使用人民币计价结算。此外,在货币之间的国际化及国际货币化是否存在有排他性竞争关系明确之前,有必要对其他国家货币的国际化或国际货币化保持警惕。 Invoice Currency is one of the important functions of international currency as a value basis in the private sector。The ratio of one currency as a settlement currency in international trade is also an important index of its degree of internationalization. According to the existing theories of the invoicing currency choice,and on the basis of a questionnaire survey of 96 export enterprises in Jiangsu Province, this paper builds a bivariate probit model with sample selection. From the perspective of price policy making, this article carries out a detailed empirical study on the determinants of the enterprises in RMB-denominated export. The empirical analysis shows that some enterprises have significant positive correlation with RMB-denominated export while others have negative correlation. The formers are enterprises with types of multinational affiliates or export processing enterprises, and with exporting products of the semi-finished products; while the latters are enterprises exporting to the United States, the euro-zone countries or other developed countries. This result suggests that when considering promoting the internationalization of the RMB, the capital control in China should be further released. Therefore, if multinational enterprises could carry out RMB financing, they would promote the use of RMB in trade invoicing and as a settlement currency. In addition, it's not clear whether an exclusive competition exists between the currencies that are in their paths of internationalization and becoming an international currencies. So, it's necessary to remain vigilant on other countries' currency internationalization or the internationalization of the currency.
  • 详情 The Effects of Market Development on Controlling Shareholders' Participation in Rights Offerings
    We examine whether and how variations in the level of market development across regions in China affect controlling shareholders decisions to participate in Chinese public companies rights offerings. We find significant positive relations between measures of market development and controlling shareholders participation, as well as evidence that controlling shareholders participation benefits minority shareholders. These results are consistent with the hypothesis that better market development in an economy can provide de facto protection for minority shareholders by creat- ing implicit incentives for controlling shareholders to act in the interests of minority shareholders. Because our study holds constant minority shareholders de jure rights, these results suggest a reputation channel exists for macro-level institutions to affect firm-level governance that is distinct from the direct channel of explicitly granting de jure rights to minority shareholders.
  • 详情 政府财政支出结构对居民消费支出挤出效应的实证分析
    消费需求是拉动经济增长的重要因素,有效刺激消费需求十分重要。本文选取改革开放以来1978-2006年的财政支出各项的数据以及城镇居民消费性支出,以财政支出为出发点,运用单位根检验、协整分析、VAR模型探讨财政支出结构对于居民消费性支出的影响。结果表明,政策性补贴支出与文教科学卫生对于消费性支出有挤出效应,而挖潜改造费用对于消费性支出有促进作用。因此,合理改善财政收支结构是扩大消费需求的关键。