沪深股市收益和风险分析

通过采用ECM模型及GARCH模型对沪深股市进行了研究,结果发现两市波动性存在非对称性和杠杆效应,沪深两市对的利空消息反应均大于利好消息的反应,但是深市风险大于沪市风险,当然其收益率也比较高。     

中国沪深股市收益率和波动性的实证分析

沪市和深市股票收益率和波动性之闻具有相互作用和相互影响,存在股价变化和走势之间的互动作用和示范效应,我们发现两市收益率序列之间具有长期协整关系,这说明它们存在类似的长期趋势成分;它们的短期误差修正系数存在一定的差异,这说明它们具有相异的短期波动模式;我们利用 GARCH 模型等非对称性方法发现两市之间存在显著的波动"溢出效应"和"杠杆效应",这说明两市资金的流动性约束较低,投资主体的相关性较强,两市收益率和波动性之间具有一定程度的整合性。     

中国沪深股市收益率和波动性的实证分析

沪市和深市股票收益率和波动性之间具有相互作用和相互影响，存在股价变化和走势之间的互动作用和示范效应，我们发现两市收益率序列之间具有长期协整关系，这说明它们存在类似的长期趋势成分；它们的短期误差修正系数存在一定的差异，这说明它们具有相异的短期波动模式；我们利用GARCH模型等非对称性方法发现两市之间存在显的波动“溢出效应”和“杠杆效应”，这说明两市资金的流动性约束较低，投资主体的相关性较强，两市收益率和波动性之间具有一定程度的整合性。     

上海与伦敦金属期货市场的波动溢出效应研究——MGARCH-BEKK模型的应用

文章建立MGARCH-BEKK模型对上海与伦敦金属期货市场的铜、铝非预期收益率的二阶矩之间的关系做了一个全面的研究。结果表明在加入WTO以前,对于铝3月收益率来说,波动的溢出效应是双向的。但是对于铜3月收益率来说,只存在上海向伦敦的波动溢出,不存在伦敦向上海的溢出。在加入WTO以后,两个市场的波动溢出效应显著增强,上海和伦敦两个市场的波动溢出效应是双向的,而且上海对伦敦的波动溢出效应要大于伦敦对上海的溢出效应。     

碳排放权交易市场的信息流动关系——基于EUA市场和CER市场的实证研究

基于Granger因果关系检验方法和MGARCH-BEKK模型,从报酬溢出和波动溢出的角度,研究国际碳排放权交易市场中的主要商品———EUAs和sCERs各自的期货价格与现货价格之间以及两者的期货价格之间的信息流动关系。结果表明:两个市场的现货市场始终都处于价格信息中心,期货市场的价格发现功能较弱甚至未体现;信息波动溢出方面,EUA市场中期货市场处于波动信息中心,而CER市场中现货市场处于波动信息中心;EUA的期货市场与CER的期货市场之间存在相互的价格溢出效应与波动溢出效应,但EUA市场的期货价格对CER市场具有更大的波动溢出效应。     

国内、国际期货市场期货价格之间的关联研究

本文利用协整检验和Granger因果检验等技术，首次对国内和国际期货市场的铜、铝、大豆和小麦的期货价格之间的动态关系进行了实证研究。结果显示：上海期货交易听与伦敦金属交易所铜、铝为期货价格之间存在长期均衡关系，大连商品交易所与芝加哥期货交易所大豆的期货价格之间存在协整关系；相对而言，国外市场的影响力较大；郑州商品交易所与芝加哥期货交易所小麦期货价格之间不存在协整关系。     

国内、国际期货市场期货价格之间的关联研究

该文利用协整检验和Granger因果检验等技术,首次对国内和国际期货市场的铜、铝、大豆和小麦的期货价格之间的动态关系进行了实证研究.结果显示:上海期货交易所与伦敦金属交易所铜、铝的期货价格之间存在长期均衡关系,大连商品交易所与芝加哥期货交易所大豆的期货价格之间存在协整关系;相对而言,国外市场的影响力较大;郑州商品交易所与芝加哥期货交易所小麦期货价格之间不存在协整关系.     

我国有色金属期货价格与现货价格传导关系的实证研究

本文利用了Johansen协整检验、ECM模型、建立在VAR和VEC模型基础上的Granger因果检验、脉冲响应函数及方差分解技术等方法,研究我国铜、铝、锌3种主要有色金属的期货价格与现货价格的关系.     

中国期货市场价格发现功能实证研究

选取中国期铝数据,借助ADF检验、协整检验、Granger因果检验等方法,研究期货市场铝的价格发现功能。研究发现,上海铝期货价格和现货价格之间存在着长期动态均衡关系。铝期货价格与现货价格之间,只存在显著的单向引导关系,上海铝现货价格显著引导铝期货价格。中国铝期货价格的价格发现机制很不显著。     

中美白糖期货市场价格发现功能的比较研究——基于2006—2008年的时间序列数据

本文运用协整分析、Granger因果检验、误差修正模型、信息共享模型、方差分解模型和脉冲响应函数,对2006—2008年中美两国白糖期现货市场价格之间的长短期变动关系进行了计量分析与横向对比。研究发现,我国白糖期货市场价格发现功能已初步显现,但我国白糖期货市场中期货价格对现货价格的引导作用与美国的成熟市场还存在较大差距,我国白糖期货市场价格发现功能的发挥水平还有待提高。     

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.     

Information Linkages between Chinese and World Copper Futures Markets

In this paper, we examine the price discovery process and volatility spillover effects in informationally linked futures markets. Using synchronous trading information from the Shanghai Futures Exchange (SHFE), the New York Mercantile Exchange (NYMEX), and the London Metal Exchange (LME) for copper futures from 2000 to 2012, we show that the cointegration relationships of these futures markets changed during 2006–2008. The results indicate that there is a bidirectional relationship in terms of price and volatility spillovers between the LME and NYMEX and the SHFE, with a stronger effect from the LME and NYMEX to the SHFE (versus the effect from the SHFE to the LME and NYMEX) prior to 2006. Our results also highlight the increasingly prominent role of the SHFE in the price formation process and cross-volatility spillover effects since 2008. Finally, we show that volatility spillover has important implications for constructing optimized portfolios for copper investors.     

国内外铜期货市场的价格联系

The purpose of this paper is to investigate the time varying relationships between the Chinese copper futures market and its London counterparts. Rolling correlation and rolling Granger causality test show that with the development of the Shanghai copper futures markets, it has stronger connections with its London counterpart and it plays more and more important role in the price discovery process. There is a long run relationship between the Shanghai futures exchanges (SHFE) and London Metals exchanges (LME) copper futures prices. The influence of LME on SHFE is greater than that of SHFE on LME. The research will shed light on the openness of the Chinese copper commodity markets and on the nature of cross-market information transmission.      

Price discovery and volatility spillover in spot and futures markets: evidences from steel-related commodities in China

The price discovery and spillover effect are significant indicators in futures markets. This study examines the price discovery and spillover effects using vector error correction model and generalized autoregressive conditional heteroskedastic for seven types of steel products in Chinese spot and futures markets. The results show that the price discovery exists in all of steel futures market. It is also confirmed that futures prices in all items are mainly leading spot prices via permanent-transitory and information share. In the results of spillover effects, it is found that wire rod, coking coal, coke and silico-manganese have the effects between spot and futures market. In rebar market, there is the spillover effect from spot to futures. This information about futures prices can help the market participants to make decisions when they predict the spot prices.     

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.     

The empirical study on price discovery of cornstarch futures market in China

This article aims at exploring the performance of the price discovery function of cornstarch futures market in China. In order to test the stationarity of the cash and futures prices of cornstarch, the augmented Dickey–Fuller test is applied. Both prices are integrated of order one. Then, the Johansen cointegration test is conducted to test the cointegrating relationship between those two prices. Finally, the Granger causality test is performed to observe the direction of causality. The evidence shows that there is a long-run relationship between cash and futures prices and the futures price Granger causes cash price. As a whole, price discovery of cornstarch market in China is present although it is a newly emerged market.     

中国银行间同业拆借市场信息国际化的检验

本文运用EGARCH模型，检验伦敦银行间同业拆借市场和中国银行间同业拆借市场之间拆借利率波动溢出的流星雨假定。结果表明，来自伦敦银行间同业拆借市场的流星雨对中国银行间同业拆借市场利率波动具有显著性影响。     

中国股票市场发展与经济增长的实证研究

本文运用Johansen协整检验、格兰杰因果检验等计量经济学方法,通过分析我国近年来宏观数据及股市规模、流动性和波动性的季度数据,对中国股票市场发展与经济增长的关系进行了计量学检验。得出的结论是：总体上,中国股票市场和经济增长之间存在长期的均衡关系,经济增长对股市的发展具有一定促进作用,但股票市场对经济增长的作用十分有限。