人民币汇率的非线性特征研究

本文分别运用不带漂移的RW模型、AR模型、SETAR模型和STAR模型对近20年的人民币实际汇率进行建模和预测,并以RMSE和MAE作为预测评价标准统计量,对样本内拟合和不同长度的样本外预测效果进行比较。研究结果表明:在四个模型中,SETAR模型对人民币实际汇率的拟合和预测效果最好,这表明同发达国家汇率均值回复连续的、对称的非线性动态调整相比,人民币实际汇率均值回复更适合间断的、非对称的非线性动态调整过程。     

基于GARCH模型的沪市波动性的实证研究

资产收益率的波动问题是现代金融投资研究的重要问题之一。自回归条件异方差（ARCH）族模型作为近年来兴起的理论模型,由于其在刻画金融时间序列波动特征方面的良好效果而受到广泛关注。文章采用1999年至今的上证指数收益率作为样本数据进行建模实证分析,分析上证指数收益率的特征,结果表明上证指数收益率具有明显的方差聚集性、波动性和尖峰厚尾特征。     

个股价格波动的一个嵌套模型:ARCH-M-交易量-期权隐含波动率

对个股的收益波动进行拟合,对于预测股价与波动时很有意义的。ARCH—M（GAKCH—M）模型还反应了风险升水状况。因此,文章力图构建一个把交易量、隐含波动率等信息揉进ARCH—M（GAKCH—M）的波动率嵌套模型,以便于波动率反映更多的市场信息。用包钢股票及权证价格数据作为实例．对嵌套模型进行了筛选,该例表明：交易量信息在波动率拟合中,既无开关效应,本身对波动率影响也不显著,隐含波动率对股价波动率有显著影响。     

基于CARR模型对我国股指期货的非对称性研究

本文以沪深300股上证指数日收益率作为研究样本,在EGARCH模型的基础上,运用CARR模型对上证指数日收益率的非对称性进行预测和实证分析.结果表明,在运用CARR模型对波动率数据进行拟合的条件下,收益序列的波动特征呈现出杠杆效应,即收益率波动具有非对称性.     

我国石油价格联动波动率研究

鉴于目前国际国内油价剧烈波动的现状,本文以国际原油价格Wti和中国大庆石油价格作为研究分析的对象,利用算术平均法和ARCH族模型计算出平均历史波动率,通过比较分析发现,两种方法的估计结果基本相符。另外,采用了ARCH族波动率模型进行研究,提出适合我国金融基础资产波动率的预测模型,有益于金融资产的风险管理和定价方面的研究。     

基于ARCH族模型的上证指数研究

本文利用Eviews软件,以2004年1月2日—2013年4月25日沪市股票的收盘价格指数日数据为样本序列,运用ARCH族模型对上证综指的波动性进行实证分析,结果表明上证综指对数序列具有较为显著的ARCH现象和"杠杆效应",通过EGARCH模型拟合预测上证综指并给出若干小结。     

Orthogonal TGARCH模型研究

本文对ARCH及其衍变模型进行了分析和总结,提出了直交门槛一般化自回归条件异方差(OrthogonalTGARCH)模型。通过模型平稳性测试、AR效果检定、ARCH效果检定、模型阶数鉴定、模型参数估计与模型诊断对模型进行评估,作者认为这种模型在估计投资组合资产收益的波动性上优越ARCH及其衍变模型。     

“后金融危机时代”中国股市波动如何?

08年世界金融危机以来,外部的世界也受到各种各样的冲击,在各种各样的冲击下,中国股市的波动如何?波动有什么特点?面对波动决策者又应该做些什么?本文应用ARIMA、ARCH、EGARCH模型对上证指数进行建模分析,对上述问题一一进行解答。     

基于GARCH模型族的深圳股市波动性分析

文章以深证综合指数作为研究对象．采用GARCH模型族对1997-2008年中国深圳股票市场的波动情况进行实证分析。研究结果表明,深圳股市具有明显的ARCH效应、深综指收益率序列具有显著的“尖峰厚尾”特点。存在波动聚集效应,期望收益与期望风险之间存在正相关关系。     

中国中小板市场的“特质波动率之谜”

利用中小板指数和上证指数的日超额收益率数据,采用半参数局部多项式回归法,研究了中国中小板市场的特质波动率与横截面收益率的关系,探讨了中国中小板市场是否存在"特质波动率之谜"现象。结果显示:总的来说,中国中小板市场的特质波动率与横截面收益率之间存在正相关关系,但是这种正相关关系并不稳定;当股票市场行情较好时,中小板市场的特质波动率与横截面收益率正相关;当股票市场行情较差时,两者负相关;当上证指数的日超额收益率为负时,中小板市场出现"特质波动率之谜"现象。     

上市公司财务报告舞弊识别的实证研究

从沪深两市上市公司中选取1999—2010年期间受到中国证监会(或财政部)公开处罚的35家A股上市公司和35家正常公司为样本,用Logistic回归的实证分析方法建立财务舞弊定量识别模型。     

Time varying price discovery of the New Third Board market in China: does the market-making system help?

This paper examines whether the market-making system helps to improve the price discovery ability of New Third Board (NTB) market in China. We first estimate the time-varying coefficients error correction models, then apply common factor weight method to quantify the time-varying price discovery contributions, and finally explore the impacts of trading volume and volatility to price discovery contributions. Empirical results show that both markets have time-varying characteristic in terms of the magnitudes and directions of the equilibrium price adjustment due to error correction term. The Shanghai Composite Index, SZSE Component Index, and SME Index are found to lead in price discovery, while NTB exhibits the leadership on the GEM Index. Volume and volatility have significant influence on the price discovery contribution. The NTB contribution is positively related to its own trading activity, negatively related to the trading activity of Shanghai and Shenzhen stock markets, while negatively correlated with the volatility of both markets. In comparison, trading activity of SZSE Component Index and volatility of GEM Index have the greatest negative impacts on the contribution of NTB market. As an important part of China’s multi-level capital market, the pricing mechanism of the NTB market needs further to be improved.     

ASYMMETRIC INFORMATION IMPACTS: EVIDENCE FROM THE AUSTRALIAN TREASURY-BOND FUTURES MARKET

Abstract.  The effect of information flows on the return volatility of Australian 3-year Treasury bond futures is examined using linear and non-linear GARCH models. Results show significant asymmetric information effects, where bad news has a greater impact on volatility than good news and a non-linear Threshold ARCH(1,1) in mean model provides the most accurate estimation of return volatility. Diagnostic tests confirm this finding and out of sample forecasting error statistics verify that the Threshold ARCH(1,1) in mean model yields the lowest forecasting error. The Threshold ARCH(1,1)-M model is best at capturing the asymmetric information impact on the Australian three-year T-Bond futures return volatility.     

Threshold nonlinearities in unemployment rates: further evidence for the UK and G3 economies

The paper appraises the in-sample and out-of-sample adequacy of linear AR and nonlinear SETAR models of unemployment rates for Germany, Japan, the UK and the US. Tests are reported for the presence and specification of threshold nonlinearities, SETAR model estimates, limiting dynamic properties and residual diagnostics, and out-of-sample forecasting performance. In-sample, threshold non-linearities are confirmed to be strongly present for the UK, US and Germany, and more marginally so for Japan. Out-of-sample, excepting Japan, SETAR models provide superior onestep-ahead forecast on RMSE grounds, most notably for the US. Final tests indicate that these models exhibit predictive accuracy in the sense of parameter and residual variance stability, implying the potential for exploitation of such nonlinearity in official forecasting.     

基于VAR的货币供应量对我国上证指数的影响力分析

货币政策会通过货币供应量的变动发挥其政策效果,并借助一定的传导机制,影响一国经济的各个层面,其供应量的变动对资产价格的变动也会造成一定的影响。应用VAR模型,选择一定的变量以及对数据进行整理,对货币供应量对我国上证指数的影响力进行实证分析,发现货币供应一般通过进入经济实体和股市两种途径影响股票市场,M1的增减方向与股市涨跌方向基本同步,M2对上证指数波动的贡献率最大。     

我国物价波动特征的实证分析

本文旨在分析我国物价水平变动的规律,预测未来价格变化的走势。利用时间序列的移动平均比率法、频谱分析、ARCH类模型等,本文实证分析了我国消费物价指数（CPI）波动的季节性、周期性、集聚性等特征。结论显示：我国物价波动呈季节性特征,具有3年左右的短周期和9年左右的长周期,聚集特征明显,物价上涨具有一定的长期记忆性。有关结论对预测我国未来CPI的走势有一定现实指导意义。     

The linkages,persistence, asymmetry in the volatility,the price discovery and efficiency,and the effect of the US subprime mortgage financial crisis on the spot and the futures market’s returns: the case of India

This article examines the effects of persistence, asymmetry and the US subprime mortgage crisis on the volatility of the returns and also the price discovery, efficiency and the linkages and causality between the spot and futures volatility by using various classes of the ARCH and GARCH models, and through the Granger’s causality. We have used two indices: one for spot and the other for futures, for the daily data from 12 June 2000 to 30 September 2013 from Nifty stock indices. We have then tested for ARCH effects, and subsequently employed various models of the ARCH and GARCH conditional volatility. The GARCH(1,1) model is found to be significant, and it implies that the returns are not autocorrelated and have ‘short memory’. It supports the hypothesis of the efficiency of the markets. The negative ‘news’ has more significant effect on volatility, corroborating the ‘leverage impact’ in finance on market volatility. We have also tested the volatility spillover effects. The two methods we employed support the spillover effects and the causality is bidirectional. We also have used the dummy variable for the US subprime mortgage financial crisis and found that they are statistically significant. Indian stock market is thus integrated to the world stock markets.     

Asymmetric spillover effects between the Shanghai and Hong Kong stock markets: evidence from quantile lagged regression

This article surveys the asymmetric spillover effects between the mainland China-based Shanghai Composite Index (SCI) and the Hong Kong based Hang Seng Index (HSI) using a quantile lagged regression model. Compared to previous studies, this article, based on data before and after the 2008 global financial crisis, presents a more detailed analysis, as we investigate the spillovers in terms of returns, volatilities and exchange rates between the renminbi (RMB) and the Hong Kong dollar (HKD) throughout the entire conditional return distribution, including the central quantiles, which are closely related to the normal circumstances, and the extreme quantiles, which correspond to the bear and bull markets. First, we find that the return spillovers from its lagged returns or from the other index not only vary across time but also depend on stock state. Second, while return volatility may boost the stock market in a bull market, it accelerates the decline in a bear market. Third, the depreciation of the RMB relative to the HKD does not significantly affect current returns for the HSI, while it negatively affects current returns for the SCI in a bad state after the crisis. The findings presented in this article will facilitate investors’ understanding of the two stock markets.     

我国股市指数波浪曲线的时间窗口研究——基于可公度法

以我国上证综合指数波浪曲线的顶位、底部的时间点为研究对象,利用可公度法分析了自1991年以来上证综合指数波浪曲线的特性。研究发现:上证综指波浪曲线的浪顶、浪底的时间窗口序列具有良好的可公度性特征,可公度法在预测股票市场指数波浪曲线的时间窗口方面具有一定精确性。     

我国碳排放权交易市场与股票市场的关联:基于非线性Granger因果检验与非平衡面板模型的实证分析

碳排放权交易市场作为金融市场的一部分,与股票市场有着一定的联动性.我国在2017年底开启全国性碳排放交易市场,其关联必将引起越来越多的关注.本文一方面通过线性Granger因果检验与非线性Granger因果检验综合检验各碳交易试点地区的碳收益率与股票市场整体的相关性,研究结果发现只有广东、天津的碳收益与深证综指和湖北与上证综指之间存在单向的Granger因果关系,而北京、上海、广东与上证综指、深证综指存在双向或单向的非线性Granger因果关系;另一方面,通过对各碳排放权交易试点地区的价格、收益率与试点区域股票市场的相关性进行非平衡面板数据的实证分析,发现碳排放权交易试点地区与其区域股市在长期、短期上都存在显著的关联性.