Momentum and reversals in Taiwan index futures returns during periods of extreme trading imbalance

The study analyzes the relation between a trading imbalance metric that captures data observable by investors, and future momentum and reversals in Taiwan index futures returns. Standard regression analyses do not show any significant dynamic relations between daily index futures returns and the trading imbalance, regardless of whether the trading imbalance metric is lagged, contemporaneous, or leads the index futures return. However, when the analyses are focused on periods with extreme trading imbalances I find that the daily index futures returns exhibit significant reversals following periods of extreme (low) trading imbalances and low returns. I also find some evidence of residual momentum in consecutive daily index futures returns following periods of extreme (high) trading imbalances and high returns. Trading simulation, directional accuracy, and market timing tests show these effects to be economically significant, even after accounting for transaction costs.     

Investor sentiment,trading behavior and stock returns

This article examines how investor sentiment and trading behaviour affect asset returns. By analysing the unique stock trading dataset of the Korean market, we find that high investor sentiment induces higher stock market returns. We also find that institutional (individual) trades are positively (negatively) associated with stock returns, suggesting the information superiority (inferiority) of institutional (individual) investors. Investor sentiment generally plays a more important role in explaining stock market returns than investor trading behaviour.     

Effects of electronic trading on the Hang Seng Index futures market

This investigation of the switch from open-outcry trading to electronic trading on the Hang Seng Index (HSI) futures contract reveals that the bid–ask spread narrows and the futures price plays more of a role in information transmission. Factors, such as anonymity in trading and fast order execution in electronic trading, attract informed traders to the futures market, enhancing the information flow. Our results provide support for the worldwide trend of transforming open-outcry markets into electronic trading platforms.     

基于行为金融理论的机构投资者羊群行为分析

中国股票市场不完善,经常出现剧烈波动,投资者相互模仿的行为非常普遍,股市上跟风跟庄此起彼伏,齐涨齐跌的现象比比皆是。这种现象在行为金融理论中称为"羊群行为"。运用行为金融理论,对其羊群行为特征进行解释和分析,并提出相应对策建议,以促进中国基金业及股市的稳定健康发展。     

非同步交易下股指期货与股票市场开收盘收益率间引导关系的实证研究

运用Granger因果检验、脉冲响应函数分析和方差分解,基于819组5分钟高频数据,对沪深300股指期货及其股票指数的开盘价格、收盘价格之间的引导关系进行检验。结果表明:期货市场与股票市场的开盘收益率相互引导;期货市场收盘收益率引导现货市场的收盘收益率和第二天开盘收益率;期货市场受自身和现货市场新息的冲击;现货市场受自身新息的冲击较大;期货市场对现货市场新息的变动更敏感;期货与现货的开盘收益率变化的总方差主要来自于现货市场,期货与现货的收盘收益率变化的总方差主要来自于期货市场。     

On the relationship between energy returns and trading volume: a multifractal analysis

Forecasting and modelling commodities price movements and the activity of energy markets are of real interest to investors and policymakers, especially during turbulent times. This study investigates the volume–returns relationship for two major energy markets (oil and gas) during the recent global financial crisis. Unlike previous studies, we examine this relationship by applying an original fractal approach to intraday data, which has the advantage of accounting for further non-normality, nonstationarity, and fat-tailedness properties. Our study provides two interesting findings. First, we find a significant multifractal relationship between returns and volume in both markets and across all timescales, suggesting nonlinearity in the cross-correlation between returns and volume and rejecting the efficiency assumption. Second, the measure of multifractality in this relationship shows that the magnitude of the fluctuations during bearish and bullish trends affects the volume–return relationship differently, and that the oil market exhibits higher volatility than does the gas market.     

融券做空与股指期货定价效率的关系研究

融券和股指期货是两种规避股票市场下跌风险的做空手段,两者之间有一定的联系,也有很大的区别.理论上,如果缺乏融券机制,股指期货的定价效率将会受到很大影响,由此会影响到股票市场的价格确定.但是,在实证研究中,融券操作具有很多限制,对股指期货定价效率的影响不是很大.因此,二者的推出和操作并无必然的联系,我国可以延续现行的市场监管格局.     

Noise trading, transaction costs, and the relationship of stock returns and trading volume

This article constructs an economic model of a rational trader who operates in a market with transaction costs and noise trading. The level of trading affects the rational trader's marginal cost of transacting; as a result, trading volume (through its effect on marginal cost) is a source of risk. This engenders an equilibrium relationship between returns and volume. The model also provides a simple way to scrutinize this relationship empirically. Empirical evidence supports the implications of the model.     

Variability of realized stock returns and trading volume

Using monthly data for 2005–2014 time period, this article documents the relationship between lagged stock returns and trading volume. We show that the dispersion of stock returns in a market portfolio positively affects future trading volume. We also show that extreme negative returns lead to high future trading volume while extreme positive returns have little effect on future trading. Dividing our sample into several sub-samples based on the Standard Industrial Classification (SIC) divisions leads to similar results for most of the SIC divisions.     

我国股指期货市场与股票现货市场的价格关系——来自中国资本市场的经验证据

本文基于沪深300股指期货自2010年4月推出以来的日收盘价数据,运用协整检验、格兰杰因果检验、脉冲响应函数等方法分析股指期货市场与现货市场价格的领先滞后关系,结果发现:沪深300股指期货和沪深300指数现货价格之间存在长期稳定的协整关系,股指期货的价格引导着现货的价格,股指期货与现货指数之间存在着单向的因果关系,脉冲响应的结果也印证了期货价格对现货价格具有更大的冲击效应的结论。这说明股指期货的上市加强了现货市场的信息传导机制,股指期货市场的推进和健康发展有利于优化我国的资本市场结构。     

Insider trading and information revelation with the introduction of futures markets

We establish a theoretical model with informed trading in which both of individual stock futures and its underlying stock are traded in the market. With the introduction of the futures, the paper shows that an informed trader's position of futures usually motivates him or her to trade more aggressively in the stock market at the expiration day. This also worsens the adverse selection problem and makes the stock market become less liquid. Moreover, the increase of the informed trading accelerates the information revelation and improves market efficiency on the expiration date. Finally, our results suggest that price manipulation could be one factor that affects the market liquidity and market efficiency when the futures are introduced into the market.     

我国股指期货市场与股票市场溢出效应研究

运用基于结构向量自回归模型的溢出指数,检验我国沪深300股指期货与沪深300指数收益率间静态和动态的波动溢出效应和信息溢出效应。结果表明,在股指期货市场未限制交易前,我国沪深300股指期货收益率波动对沪深300指数收益率波动具有显著正向净溢出效应,沪深300股指期货成交量对沪深300指数收益率波动也具有显著正向净溢出效应;在股票市场剧烈波动时,波动溢出效应和信息溢出效应均会增加,沪深300股指期货成交量的增加会放大股指期货对现货的波动溢出效应。因此,在我国股票市场持续不稳定波动的背景下,对股指期货成交量和波动进行合理的管制,可降低期货市场对股票市场的波动溢出效应,进而有效防范资本市场风险。     

Index arbitrage and dynamics between REIT index futures and spot prices

This article contributes to the real estate literature by investigating the pricing relationship between REIT index futures and spot. Based on the cost-of-carry model, we first show that there exist three arbitrage regimes in Australia’s REIT spot-futures price dynamics. Further analysis indicates that the two thresholds, which separate the regimes, are largely consistent with the level dictated by transaction costs. We then estimate a threshold vector error correction model (TVECM). The results show that mean reversion of the mispricing error only takes place in the two outer regimes. Furthermore, we find evidence that REIT spot market is more informationally efficient than the futures market. Given its short history, it will take time for REIT index futures market to mature. Finally, we find that we can enhance hedging performance by accommodating the feature of threshold cointegration displayed by the data. As the futures-spot relationship differs across regimes, we can develop a hedging strategy by adjusting the hedge ratio based on arbitrage regimes. It leads to a greater variance reduction for the hedged portfolio than some conventional methods examined in the existing real estate literature.     

我国股票价格与货币政策关系的实证分析

中国的股票市场经过十余年的发展,逐渐壮大成为与整个经济发展紧密相连的、为各种资金所有者和需求者提供投融资渠道的不可缺少的一个重要市场。随着股票市场在国民经济运行中地位的突出,在我国宏观经济政策的制定过程中,也越来越重视股票市场的影响。尤其是自1997年亚洲金融危机以来,我国所实行的以货币供给量为中介目标的货币政策效果差强人意,而学者们大多从现行的银行结售汇制度、商业银行的资产经营行为、货币流通速度等方面寻求解释。     

股指期货的推出对现货市场影响的实证研究——基于新华富时A50的分析

股指期货的推出对现货市场波动性的影响一直备受学术界的关注,本文通过GARCH模型,分析了新加坡证券交易所推出的新华富时A50股指期货对沪深300指数的影响,发现股指期货的推出轻微地增大了现货市场的波动性,同时信息对现货市场的冲击更强;通过TARCH/EGARCH模型发现,股指期货的推出增大了现货市场的非对称效应。     

人民币汇率与股市收益的动态关联性实证研究

利用基于广义误差分布（GED）的多因素TGARCH模型,实证分析了2005年7月21日汇改后人民币汇率与中国股市收益的动态关系。估计结果显示：人民币汇率对股市收益有显著的价格扩散效应,汇率上升会引起上证指数收益率较大幅度的上升;股市收益波动存在显著的ARCH效应和GARCH效应,并且等强度的正向或负向新息的冲击会引起股市波动的非对称反应,正向冲击比同强度的负向冲击能带来股市更大的未来波动。     

An information theoretic analysis of stock returns,volatility and trading volumes

Information theory is used to examine the dynamic relationships between stock returns, volatility and trading volumes for S&P500 stocks. This provides an alternative approach to traditional Granger causality tests when dealing with nonlinear relationships. The article highlights the dominant role played by trading volumes in all of these relationships – even in the return–volatility relation – and finds evidence of a market level feedback effect from index returns to the return–volatility relation at the stock level. The article also produces a number of stylized facts from an information theoretic perspective.     

我国股票市场指数与国际股票市场主要指数的联动性研究——基于协整分析

本文对2002—2009年中国股票市场与国际主要股票市场的每日收盘数据进行统计分析,运用相关性检验、协整检验和格兰杰因果关系检验实证了上证综合指数、深圳成分指数分别与香港恒生指数、道.琼斯指数、日经225指数、法国CAC40指数和伦敦金融时报指数之间存在相关、协整关系。进一步研究我国股票市场与国际股票市场的联动性,结果表明,国际股票市场对我国股票市场的影响越来越明显。这表明中国股票市场日趋成熟,逐渐与相对完善的国际股票市场接轨。     

资产收益率与通货膨胀率关联性的实证分析

通过研究股票实际收益率与通货膨胀波动性之间的关系,可以判断股票市场波动和宏观经济运行之间的联系.我们检验发现,通货膨胀率的波动能够影响股票实际收益率的变化,这说明价格水平变化不仅影响消费品之间的替代,也影响投资品之间的替代.因此,通过积极货币政策缓解通货紧缩压力,可以增强股票市场的规模活性并形成收益率上升的稳定预期.     

关于股票市场与货币需求增量关系的质疑

近年来,我国理论界普遍认为,股票市场的发展与扩张对货币产生了不可忽视的增量需求, 但是,在我国资本市场发展过程中所表现出来的这一现象却与国外在经济金融发展过程中所反映出来的一些普遍规律不尽相同.由于美国股市事实上已成为世界经济发展的晴雨表,故本文将借助对中国和美国股市在货币需求问题上的比较研究,以期更深刻地揭示资本市场发展对货币需求的影响以及其中的内在规律,并提出相应的政策建议.