基于COPULA-EVT的利率衍生品风险管理

监管层提出对＂系统重要性银行＂和＂非系统重要性银行＂进行分类管理的思路,表明在强化宏观审慎监管过程中,微观个体宏观审慎经营行为仍然起着重要的作用。新巴塞尔协议对于银行信用风险的监控和计量有了更加严格的规定,然而对于涉及到衍生品的市场风险只是强调银行要根据自身的交易业务进行合理评估,这样便使得衍生品的市场风险成为了银行整体风险中最不稳定的因素。本文基于极值分布、Copula连接函数和蒙特卡洛模拟理论,获得商业银行包括利率期货、利率期权、利率互换在内的单个利率衍生品的风险度量指标,如VaR,CVaR,EVA,RAROC,EC,并得到衍生品组合的风险度量指标,这些指标可以帮助商业银行更加清晰地了解自身的潜在风险。同时,商业银行在给定风险容忍度VaR下能得到各种衍生产品的最优配置,从而为银行的投资决策提供参考。     

Interest Rate Dynamics and Consistent Forward Rate Curves

We consider as given an arbitrage‐free interest rate model M, and a parametrized family of forward rate curves G. We study the question as to when the given family G is consistent with the dynamics of the interest rate model M, in the sense that M actually will produce forward rate curves belonging to G. We allow the interest rate model to be driven by a multidimensional Wiener process, as well as by a marked point process, and we give necessary and sufficient conditions for consistency. As test cases, we study some popular models, obtaining both positive and negative results about consistency. We also introduce a natural exponential‐polynomial family of forward rate curves, and for this family we give necessary and sufficient conditions for the existence of consistent interest rate models with deterministic volatility functions.     

论中国利率市场化进程与利率期货的推出

中国利率市场化的进程正在有步骤地加速推进,利率的市场化必然带来利率波动幅度的加大,如果没有有效的利率风险管理工具作为配套机制,必然会影响利率市场化的顺利进展,也影响到整个金融市场应有作用的发挥.发达国家的经验表明,利率市场化要求利率期货作为利率风险管理的机制予以配合,因此,在推进中国利率市场化的进程中应研究推出利率期货交易的问题.利率期货的最主要承载体是国债期货.根据中国目前利率市场化进展的实际情况,从各类经济实体已经或可能面临的利率风险看,对国债期货的需求日渐强烈.本文的主旨是,在论述中国利率市场化进程中,分析各类经济实体所面临的各种利率风险,以及国债期货对于这一风险管理所起的应有作用,从而得出应当推出国债期货的结论.     

Mean-Variance Hedging for Stochastic Volatility Models

In this paper we discuss the tractability of stochastic volatility models for pricing and hedging options with the mean-variance hedging approach. We characterize the variance-optimal measure as the solution of an equation between Doléans exponentials; explicit examples include both models where volatility solves a diffusion equation and models where it follows a jump process. We further discuss the closedness of the space of strategies.     

"利率通道"调控模式对我国利率市场化改革的启示

金融自由化理论的发展对各国金融改革提供了理论支持,我国正在进行的利率市场化改革,迫切需要构建适合实际和发展需要的利率调控模式,所以必须了解“利率通道”调控模式的运行机制,运用实证数据对“利率通道”调控模式进行模拟分析,从而建立以“利率通道”调控为主、公开市场操作调控为辅的利率调控模式作为我国利率市场化改革的选择。     

关于我国利率市场化若干问题的研究

实行利率市场化有利于增强我国银行对外资银行的竞争力,是我国金融体制改革的必然选择。研究利率市场化对我国宏观投资效益、存贷款先后次序安排及汇率的效应分析,有利于改进资金使用的宏观效益。我国是发展中国家,金融市场发育尚不完善,应选择渐近式实施利率市场化进程为宜。     

利率杠杆的选择及人民币利率下调的论证

随着财政政策效力的减弱,在继续实施积极的财政政策的同时,应让货币政策发挥积极的作用,以保持适当较快的贷币供应增长,满足宏观经济增长的需要。连续七次降息,政策效果明显。当前有效需求不足、经济增长趋缓、储蓄存款增长、债券利率下降、国际利率降息浪潮及较低的通货膨胀率等现实的存在,都说明人民币利率再次下调有其客观性。     

汇率风险如何影响中国对日本的出口

本文研究汇率风险对中国与日本的双边出口是否存在长期和短期的影响。使用多元JO-HANSEN协整检验法来检验汇率波动率与出口之间是否存在长期均衡关系。使用GRANGER非因果检验和脉冲响应函数检验短期影响是否存在。研究结果表明从长期看,汇率风险对出口没有影响,但是短期看,汇率风险确实会影响出口。     

Mexican Peso Futures and Exchange Rate Volatility

Abstract

The reintroduction of Mexican peso futures contracts in April 1995 resulted from a refocus of governmental policy to the use of market-based mechanisms to stabilize the exchange rate. Interest in the Mexican peso future contracts has been high as investors look to manage their exposure from transactions and investments denominated in pesos. This study utilizes a VAR framework to analyze the relationship between the volatility in the Mexican peso spot market and futures contracts trading activity. Shocks to the exchange rate volatility lead to increased hedg-ing-type activity. Furthermore, an increase in futures contracts trading activity (reflecting additional speculation-type activity) results in a short-run increase in volatility. A Granger Causality test also indicates a statistically significant link between spot price volatility and futures trading activity in the Mexican peso exchange market.

RESUMEN

La reintroducción de los contratos futuros del peso mexicano en abril de 1995, resultó del nuevo enfoque de la política gubernamental de usar los mecanismos de mercado para estabilizar la tasa cambiaria. Ha habido mucho interés en los contratos futuros del peso mexicano, ya que los inversores buscan administrar su exposición a las transacciones e inversiones denominadas en pesos. Este estudio utiliza el marco del VAR para analizar la relación existente entre la volatilidad del peso mexicano en el mercado spot y la actividad de negociación de los contratos futuros. Los choques sufridos por la volatilidad de la tasa cambiaria resultan en un aumento de las actividades del tipo hedging. Además, un aumento en la actividad de negociación de los contratos futuros (que refleja otras actividades de naturaleza especulativa) provoca, a corto plazo, un aumento en la volatilidad. Una prueba Granger Causality también indica un vínculo estadísticamente significativo entre la volatilidad del precio spot y la actividad de negociación del mercado futuro en el mercado cambiario del peso mexicano.

RESUMO

A reintrodução dos contratos futuros em peso mexicano, em abril de 1995, foi o resultado de uma revisão da política governamental, em relação ao uso dos mecanismos baseados no mercado para estabilizar a taxa de câmbio. Os juros dos contratos futuros, em peso mexicano, foram altos, devido ao cuidado dos investidores em administrar o risco das transaç[otilde]es e dos investimentos efetuados em pesos. Este estudo utiliza a estrutura VAR, para analisar o relacionamento entre a volatilidade do mercado local, em peso mexicano, e a atividade comercial de contratos futuros. Choques aplicados à volatilidade da taxa de câmbio contribuíram para o aumento das atividades típicas de hedging. Além disso, um crescimento da atividade comercial de contratos futuros (refletindo uma atividade basicamente especulativa) ocasiona um rápido aumento na volatilidade. O teste Granger Causality indica, também, um vínculo estatístico significativo entre a volatilidade do preço local e a atividade comercial de futuros no mercado cambial do peso mexicano.     

中国汇率制度改革的目标

为符合经济环境和对外贸易需要中国汇率制度已经经过几次变革。但随着中国经济的发展和世界其他国家贸易往来更加密切,减少不必要的贸易摩擦并且逐步实现金融自由化要求下改革中国现行的汇率制度,就显得更加迫切。因此在参考一些国家汇率制度改革和演变的基础上改革中国的现行汇率制度,实行汇率目标区将是我国金融改革过程中的一个现实、较优的选择。     

Complete Models with Stochastic Volatility

The paper proposes an original class of models for the continuous-time price process of a financial security with nonconstant volatility. The idea is to define instantaneous volatility in terms of exponentially weighted moments of historic log-price. The instantaneous volatility is therefore driven by the same stochastic factors as the price process, so that, unlike many other models of nonconstant volatility, it is not necessary to introduce additional sources of randomness. Thus the market is complete and there are unique, preference-independent options prices.
We find a partial differential equation for the price of a European call option. Smiles and skews are found in the resulting plots of implied volatility.     

A Note on the Stability of Lognormal Interest Rate Models and the Pricing of Eurodollar Futures

The lognormal distribution assumption for the term structure of interest is the most natural way to exclude negative spot and forward rates. However, imposing this assumption on the continuously compounded interest rate has a serious drawback: rates explode and expected rollover returns are infinite even if the rollover period is arbitrarily short. As a consequence, such models cannot price one of the most widely used hedging instruments on the Euromoney market, namely the Eurodollar futures contract.
The purpose of this note is to show that the problems with lognormal models result from modeling the wrong rate, namely the continuously compounded rate. If instead one models the effective annual rate these problems disappear.     

论国际金融市场的利率传导机制

当国际金融市场的利率与一国利率存在差距时,国际资本便会流入或流出,随之又会影响其他国家的资本供给和利率。由于利差的经常存在,国际游资数额巨大,利率差的传导渠道不容低估。从利率的流动性效应着手,运用开放经济条件下利率传导的基本原理及利率、汇率和通胀率之间的关联性,分析国际金融市场利率传导机制的表现,得出来自利率汇率平价机制的市场性传导在金融全球化过程中有力地影响着各国的利率水平,并且通过实际利率的变化影响经济运行步伐。     

商业银行利率风险管理模型及实证分析

利率风险是利率的不利变动给银行财务状况带来的风险。利率的变动通过影响银行的净利息收入和其他一些利率敏感性收益和经营费用,最终影响到银行的收益。如果对利率敏感性缺口和持续期缺口模型进行分析,可以探讨出规避利率风险的相关思路。     

利率市场化与金融创新之探讨

改革开放25年以来,我国的商品和服务市场建设已经取得了长足的进展,市场调节价的综合比重超过了95%,但却对资金的价格———利率一直保持着计划管理为主的模式不变。这成为我国利率管理体制僵化、传导机制弱化以及利率结构扭曲的主要原因。十六大报告特别提出了“要稳步推进利率市场化改革,优化金融资源配置”的重要决策,揭开了我国利率市场化改革的帷幕。这必将引起我国金融制度、金融组织和金融工具的一系列创新。     

利率市场化对保险业的影响及对策

改革开放二十年来,我国在商品价格领域的改革取得了巨大的成就,但资金价格—利率仍然受到管制,这一矛盾随着加入WTO而变得更加突出,因此利率市场化改革势在必行。利率市场化改革对保险业来讲:机遇与风险并存。这就要求保险业积极采取措施来应对利率市场化改革的挑战。     

Interest Rate Option Pricing With Poisson-Gaussian Forward Rate Curve Processes

We study a continuous trading bond model where the associated forward rate curve follows a multidimensional Poisson-Gaussian process. the bond market is complete, and the unique arbitrage-free interest rate call option price is explicitly derived.     

温和加息不是股市利空

通常认为,加息会对股票投资产生极为不利的影响。但是,通过对美国和中国的历史数据的实证分析发现,利率高低对股市涨跌没有明显的影响。这样的结果与流行的结论不太一致,为此,通过深入分析后发现,利率变动时公司盈利的起点不同以及利率变动后长短期资产收益变动的不一致性是出现这种现象的重要原因。     

Pricing Options On Risky Assets In A Stochastic Interest Rate Economy1

This paper studies contingent claim valuation of risky assets in a stochastic interest rate economy. the model employed generalizes the approach utilized by Heath, Jarrow, and Morton (1992) by imbedding their stochastic interest rate economy into one containing an arbitrary number of additional risky assets. We derive closed form formulae for certain types of European options in this context, notably call and put options on risky assets, forward contracts, and futures contracts. We also value American contingent claims whose payoffs are permitted to be general functions of both the term structure and asset prices generalizing Bensoussan (1984) and Karatzas (1988) in this regard. Here, we provide an example where an American call's value is well defined, yet there does not exist an optimal trading strategy which attains this value. Furthermore, this example is not pathological as it is a generalization of Roll's (1977) formula for a call option on a stock that pays discrete dividends.     

On the Existence of Finite-Dimensional Realizations for Nonlinear Forward Rate Models

We consider interest rate models of the Heath–Jarrow–Morton type, where the forward rates are driven by a multidimensional Wiener process, and where the volatility is allowed to be an arbitrary smooth functional of the present forward rate curve. Using ideas from differential geometry as well as from systems and control theory, we investigate when the forward rate process can be realized by a finite-dimensional Markovian state space model, and we give general necessary and sufficient conditions, in terms of the volatility structure, for the existence of a finite-dimensional realization. A number of concrete applications are given, and all previously known realization results (as far as existence is concerned) for Wiener driven models are included and extended. As a special case we give a general and easily applicable necessary and sufficient condition for when the induced short rate is a Markov process. In particular we give a short proof of a result by Jeffrey showing that the only forward rate models with short rate dependent volatility structures which generically possess a short rate realization are the affine ones. These models are thus the only generic short rate models from a forward rate point of view.