Empirical Analysis of Stock Returns and Volatility: Evidence from Seven Asian Stock Markets Based on TAR-GARCH Model

This paper investigates the time-series behavior of stock returns for seven Asian stock markets. In most cases, higher average returns appear to be associated with a higher level of volatility. Testing the relationship between stock returns and unexpected volatility, the evidence shows that four out of seven Asian stock markets have significant results. Further analyzing the relationship between stock returns and time-varying volatility by using Threshold Autoregressive GARCH(1,1)-in-mean specification indicates that the null hypothesis of no asymmetric effect on the conditional volatility is rejected for the daily data. However, the null cannot be rejected for the monthly data.  

基于湘粤两省货币政策效应的差异性研究

以湖南省和广东省为例,分析了两省经济金融发展的差异,并运用VAR模型和脉冲响应检验了统一货币政策在湘粤两省的不同效果。实证结果表明,在央行统一货币政策的前提下,应结合不同地区经济金融发展的差异制定差异化的货币政策,以提高货币政策的地区效应,达到缩小各地区间经济金融发展差距的目的。  

Modeling the Conditional Covariance Between Stock and Bond Returns: A Multivariate GARCH Approach

To analyze the intertemporal interaction between the stock andbond market returns, we assume that the conditional covariancematrix follows a multivariate GARCH process. We allow for asymmetriceffects in conditional variances and covariances. Using dailydata, we find strong evidence of conditional heteroskedasticityin the covariance between stock and bond market returns. Theresults indicate that not only variances, but also covariancesrespond asymmetrically to return shocks. Bad news in the stockand bond market is typically followed by a higher conditionalcovariance than good news. Cross asymmetries, that is, asymmetriesfollowed from shocks of opposite signs, appear to be importantas well. Covariances between stock and bond returns tend tobe relatively low after bad news in the stock market and goodnews in the bond market. A financial application of our modelshows that optimal portfolio shares can be substantially affectedby asymmetries in covariances. Moreover, our results show sizablegains due to asymmetric volatility timing.  

人民币外汇市场间不对称汇率变动的实证研究

现有关于人民币汇率各市场间关系的研究一般是基于多元GARCH模型,探讨各市场间的线性相关关系,未能考虑各市场间汇率变动可能存在的"不对称效应":面临正(反)向的较大冲击时,各市场汇率变动表现出同步性;而面临反(正)向的较大冲击时,各市场汇率变动不同步。本文运用SJC-Copula-MGARCH模型对人民币汇率境内SPOT市场、境内DF市场和境外NDF市场之间的相依关系进行实证分析,发现境内汇率市场(SPOT市场和DF市场)和境外NDF市场间的联系仍较弱;SPOT-DF市场在面临大的正冲击和负冲击时均表现出较强的联动性,而SPOT-NDF市场和DF-NDF市场在面临大的冲击时汇率变动表现出"不对称效应":在面临大的正冲击(人民币相对贬值)时,境内汇率市场和境外NDF市场汇率变动不同步,当面临大的负冲击(人民币相对升值)时,境内汇率市场和境外NDF市场汇率变动表现出较强的同步性。本文进一步分析了上述"不对称效应"的经济机理,探讨了其经济学含义。  

欧元区单一货币政策区域非对称效应的实证研究——基于VAR方法的检验

本文试图在开放宏观框架下检验欧元区单一货币政策冲击给各成员国带来的区域非对称效应。首先,通过考察欧元区货币政策传导渠道检验区域非对称效应的产生机制;其次,运用VAR模型和脉冲响应函数(IRFs)检验货币政策区域效应的程度;最后,运用分时段VAR模型检验货币政策区域效应的内生性。结果表明,欧洲单一货币政策对各成员国产生非对称冲击,且非对称效应未出现收敛性,欧元区宏观政策协调的成本和难度加大。  

我国货币政策多重非对称效应实证检验

实证检验表明：在不同的年份，我国经济或受到正向货币供给冲击，或受到负向货币供给冲击；我国东部地区、东北地区、西部地区和中部地区并不总是同时处于地区经济周期的繁荣或衰退阶段；我国不同调控方向的货币政策对处于地区经济周期不同阶段的四地区经济的影响是不相同的，即存在货币政策多重非对称效应。  

国外货币政策区域非对称效应研究述评

自从Scott最早证明货币政策区域非对称效应存在以来,围绕货币政策区域非对称效应相关问题,国外学者们进行了大量研究。本文对国外最优货币区理论及发展、货币政策区域非对称效应检验以及实证解释的研究文献进行了回顾与述评。从国外对货币政策区域非对称效应的研究现状看,研究是比较全面的,但也存在一些不足。因此,本文最后对未来货币政策区域非对称效应研究的重点进行了展望。  

Asymmetric Impact of Oil Price Shock on Stock Market in China: A Combination Analysis Based on SVAR Model and NARDL Model

This article integrates the SVAR model and nonlinear ARDL (NARDL) model to analyze the long-run and short-run asymmetric effect of structural oil price shocks on the Chinese stock market. We reveal that the demand-side shocks of oil price have a significant impact on the Chinese stock market in both short and long run, but the supply shock is an exception. In terms of asymmetric nature, there is no evidence of asymmetric impact when it refers to the supply shock and the oil-specific demand shock on stock market, and only the aggregate demand shock has asymmetric effect in short run.  

Investor Attention and Stock Returns: International Evidence

This article examines the asymmetric/discriminative effects of investor attention on expected stock returns among 15 markets through economic expansions and recessions. The predictive power of attention tends to be short-lived and weakens the autocorrelation within returns. Accounting for business cycles not only confirms that the predictability of attention endures with volatility but also explicates the asymmetric effects that underlying pessimism functions better. International evidence contributes to the literature on investor attention and reveals the discrepant effects of attention with three levels of market efficiency: semi-strong, stronger than semi-strong, and weak.  

货币扩张、消费习惯偏好与产出非对称效应研究

运用 LSTVAR 方法，考量货币扩张、消费习惯偏好与产出非对称效应，发现货币扩张的产出效应具有非对称性，且货币扩张在“低增长区制”下的产出效应显著大于在“高增长区制”下的产出效应。消费习惯偏好的程度差异是导致不同经济区制下货币政策非对称效应的主要原因，且低消费习惯偏好下货币扩张的产出效果更好。鉴此，政府在主动降低经济增速要求的同时，应积极创新宏观调控方式，改善居民消费环境，优化居民消费结构，以降低居民消费习惯偏好。