房地产市场有效性研究——以北京和上海为例

利用北京和上海住宅市场与写字楼市场的数据,考察了市场中收益和风险的特征,并检验了它们是否满足市场有效性的要求。统计分析结果表明,超额收益时间序列的历史值对未来的收益有一定的解释能力,同时方差比检验也表明这四个房地产市场均不具备弱有效性;租金价值比的信息可用来对未来收益进行预测,因此半强有效性的假设也能够被拒绝;在我国的房地产市场中,价格对于市场信息的反应速度比较慢,消费者往往在信息不对称的情况下进行决策,市场搜寻时间偏长,交易成本偏高。     

我国上交所A股市场随机游走模型的检验

本文在对相关概念进行梳理和明晰的基础上,选取2010年7月22日至2013年6月1日上海证券交易所A股指数的当日收盘值,共689个数据作为研究对象。运用Eviews计量经济法及三种主要检验法对时间序列数据是否符合随机游走模型进行分析与检验。结果表明,该数据的生成遵从随机游走模型,进而可以判断出上交所A股市场为弱式有效市场。     

上海股票市场的周期性和长记忆性的实证研究

本文采用经典的R/S分析法对我国股票市场的长记忆性进行探讨,考察上海股票市场的多重非规则性周期.研究发现上证综指日收益序列,在3≤n<188时,结论支持上证综指日收益序列遵循随机游走;而在1 87≤n1 551时,Hurst指数显著小于随机游走情形下的期望Hurst指数E(H),收益率序列表现出较强的逆状态持续性.     

沪深A股收盘指数的协整性分析

深入了解中国资本市场之间的联动关系对于决策的制定具有重要作用。本文通过对上证A股市场和深证A股市场之间关系的实证来分析,对两市指数时间序列的单位根检验表明两个序列都是一阶单整的,进而应用ECM模型的结果则表明两市指数之间互为因果关系,且存在长期均衡关系,但并不显著。短期变化似乎深证A股指数影响更大,也更为显著。     

中国债券市场弱有效性检验

运用一元时间序列的分析方法对中国债券市场的三个主要指数（中国债券总指数、银行间债券总指数和上海交易所国债指数）进行的检验结果显示,中国债券市场基本上接受随机行走假设,具备弱有效特征。银行间市场表现为部分拒绝随机游走,而交易所市场则表现出较强的正自相关,这种差别说明了不同的市场结构会对价格运动方式产生重要影响。     

春节文化、一月价值溢价效应与投资者非理性投资

本文以1995年1月至2010年12月间的沪深两市所有A股股票作为研究样本,采用基于广义误差分布的广义自回归条件异方差模型(GED-GARCH)对我国股票市场一月效应进行验证,结果显示我国股票市场存在显著的"一月效应"。接着,本文利用Fama-MacBeth时间序列横截面回归法验证了我国存在"一月价值溢价效应"。最后,本文研究发现春节文化可以作为解释"一月价值溢价效应"的依据。个人投资者在春节前获得大笔年终奖金后,偏好于投资高风险的股票,导致了该效应的产生。     

中美股票市场弱式有效性的比较研究

本文使用序列自相关分析、游程检验、滤嘴法则和自回归残差检验四种方法以上证A股综合股价指数、深证A股成份股份指数、道&;#183;琼斯工业平均数和NASDAQ综合股份指数的弱式有效性作了检验。结果表明，美国两个股票市场呈弱式有效性，中国两个股票市场还不能确认呈弱式有效性，本文对中国股市的信息传递机制提出了看法和建议。     

高盛谋杀A股

2010年11月12日，中国股民又迎来“黑色星期五”，当日，两市股指双双创出14个月以来的最大单日跌幅。A股上证指数暴跌5．16％。而国际知名投行高盛则被指在暴跌当日以邮件形式提醒境外投资者，建议客户卖出手上中国股票从而导致当日A股暴跌，有操纵股指牟利之嫌。高盛则否认引发A股大跌。     

我国深沪两市A股市盈率的分析

市盈率是一个集考核收益和风险于一体的综合指标。本文在分析市盈率基本特性的基础上,以2011年8月5日沪深两市全部A股市盈率截面资料为样本,对我国股市市盈率分布结构进行描述、分析、检验,认为沪深两市A股市盈率结构分布有较强的相似性和较高的相关性,市盈水平有明显的一致性,是一个完整的主板市场。     

6月中国股市暴跌 QFII加速跑步进场

今年以来,合格境外机构投资者(QFII)一直保持着较高的开户频率,3月份QFII沪深两市新增A股开户26户,4月份又新增了10个A股账户,5月份新增22户,6月份更是在A股新开29户,跑步入市特征明显。据中登公司六月报数据显示,该月QFII基金在沪深两市分别新开14个和15个A股股票账户,新销户分别为1户、2户,A股账户净增加26户,从而使得     

我国货币政策与沪深股市的协整关系研究

运用协整检验、误差修正模型、格兰杰(GRANGER)因果检验等计量经济学方法,对我国货币政策如何影响沪深股市这一问题做了系统而深入的研究。通过分析,得出了如下结论:STV、M0、M1、M2之间存在着两个协整关系;RSTV、RM0、RM1、RM2之间存在着三个协整关系。在货币供应量与沪深股市市价总值之间,是货币供应量的变化影响沪深股市市价总值,而不是沪深股市市价总值影响货币供应量的变化。这些结论对投资者尤其是机构投资者来讲,具有一定的参考价值。同时,对我国货币政策当局调控股市也有一定的借鉴意义。     

Volatility Spillovers and the Risk-Return Relation Between Stock and Foreign Exchange Markets in Brazil

We examine the evidence of mean and volatility spillovers between stock and foreign exchange markets in Brazil with multivariate GARCH models and nonlinear Granger causality tests. We also use a multivariate GARCH-in-mean model to assess the relationship between risk and return in these markets. The results indicate that the stock market leads the foreign exchange market in price formation and that nonlinear Granger causalities from the exchange market to the stock market do occur. Part of these nonlinear causalities are explained by volatility spillovers. We show that exchange rate volatility affects not only stock market volatility but also stock returns.     

The conditional relationship between beta and returns: recent evidence from international stock markets

The risk–return relationship is one of the fundamental concepts in finance that is most important to investors and portfolio managers. Finance theory argues that the beta or systematic risk is the only relevant risk measure for investors. However, many studies have showed that betas and returns are not related empirically, no matter in domestic markets or in international stock markets. This paper examines the conditional relationship between beta and returns in international stock markets for the period from January 1991 to December 2000. After recognizing the fact that while expected returns are always positive, realized returns could be positive or negative, we find a significant positive relationship between beta and returns in up market periods (positive market excess returns) but a significant negative relationship in down market periods (negative market excess returns). The results are robust for both monthly and weekly returns and for two different proxies of the world market portfolio. Our findings indicate that beta is still a useful risk measure for portfolio managers in making optimal investment decisions.     

Random Walk in the MIST

The term MIST has been coined to describe the next tier of large emerging economies, namely Mexico, Indonesia, South Korea, and Turkey. This article reexamined whether the properties of mean reversion for stock prices held for the MIST emerging stock markets using the sample from April 2004 to April 2012. The authors utilized a panel unit test with Fourier transformation capable of taking multiple structural breaks into account to discover that MIST stock markets indeed follow a random walk process. This is consistent with the efficient market hypothesis, suggesting that historical information is not useful in predicting future prices in MIST stock markets.     

Stock market development and economic growth: Evidence from seven sub-Sahara African countries

The paper examines the long run and causal relationship between stock market development and economic growth for seven countries in sub-Saharan Africa. Using the autoregressive distributed lag (ARDL) bounds test, the study finds that the stock market development is cointegrated with economic growth in Egypt and South Africa. Moreover, this test suggests that stock market development has a significant positive long run impact on economic growth. Granger causality test based on vector error correction model (VECM) further shows that stock market development Granger causes economic growth in Egypt and South Africa. However, Granger causality in the context of VAR shows evidence of bidirectional relationship between stock market development and economic growth for Cote D’Ivoire, Kenya, Morocco and Zimbabwe. In Nigeria, there is a weak evidence of growth-led finance using market size as indicator of stock market development. Based on these results, the paper argues that stock markets could help promote growth in Africa. However, to achieve this goal, African stock markets need to be further developed through appropriate regulatory and macroeconomic policies.     

How Have the Emerging Stock Exchanges in Africa Responded to Market Reforms?

Abstract

In this paper, we focus on how the stock markets in Africa have responded to the reform process. We identify three main types of reforms implemented in these markets since the 1990s, namely revitalization of the regulatory framework, modernization of trading systems, and relaxation of restrictions on foreign investors. We invoke market microstructure theory to hypothesize the expected response of the markets in terms of efficiency and volatility to the three types of reforms. Econometric methods are applied to test the hypotheses on a sample of ten stock exchanges, for the period 1988:01-1999:12. The evidence generally suggests that there are benefits of investments to improve market microstructure. For example, a comparative analysis across the sample demonstrates that markets with advanced trading technology, tight regulatory system and relaxed foreign investors' participation show greater efficiency and lower market volatility. Although direction of causality between efficiency and volatility varies across the markets, in general, we infer that reforms, which reduce volatility, reap higher efficiency. However, in some markets, the effects of the reforms are too recent to show any clear response pattern.     

Does the decision to issue public debt affect firm valuation? Russian evidence

This paper examines the association between firm valuation and the sources of debt financing. In particular, using a sample of 353 firms, we test whether the decision to issue bonds affects the firm's stock market performance in the emerging Russian markets. Our results indicate that public debt financing may have a negative effect on the firm's market valuation. After controlling for the differences in firm-specific characteristics and addressing potential endogeneity issues, we document that the firms which rely on public debt underperform relative to firms with other sources of debt financing in terms of stock market valuation.     

西北地区上市公司财务危机预警模型问题研究

西北地区作为民族聚居区,其战略地位日益显现,但本地区股票市场发展的规模、水平与其地位很不相称。目前制约其发展突出的问题是缺乏定量分析,为此采集和选取了近几年西北地区76家上市公司核心财务指标,以Logistic模型为基础,建立财务预警模型,并对影响公司预亏的核心指标从经济学和财务学的角度给出了降低公司来年预亏可能性的指导性建议。为了克服部分指标间的相关性对分析结果的影响,并使预警模型更趋合理,又进一步以公司预亏前两年各指标的综合值为基础,建立了以显著的主成分指标为回归变量的财务预警的Logistic模型,以期为本区上市公司提供一种及早发现、预防、分散和化解财务风险的参考依据,并为投资者提供较为合理的投资预期分析工具。     

The impact of the US stock market opening on price discovery of government bond futures

We examine price discovery in sequential markets for the 10-year US Treasury note, German bund, and UK gilt futures over the period 2010–2017. We find that price discovery increases after the opening of the US stock market. Order flows in the bond futures markets are more informative for permanent price changes in the 30-min period after the US stock market opens. A placebo test using US statutory holidays confirms our findings. A cross-market analysis suggests that the increased price discovery in the bond futures is related to returns and net order flows of the US stock market.     

The role of financial investors in determining the commodity futures risk premium

I develop and test a model to study the interaction between the commodity and stock markets. This study attempts to clarify the debate about the effect of financialization on commodity markets. Theoretically, the futures risk premium is determined by hedging pressure, stock market returns, and the commodity–equity correlation. Empirically, the effect of the stock market on the energy market became significantly greater for the futures risk premium in the period following the 2008 crisis. Furthermore, hedging pressure is a strong explanatory variable for the futures risk premium in various circumstances.