浅谈上证180指数的可操作性

2002年7月1日起,上海证券交易所正式对外发布上证180指数,以取代原来的上证30指数。该指数以2002年6月28日上证30指数收盘点数3299.06点为基点进行计算。 该指数不同于上证指数,它们所选取的样本股范围不同。上证180指数是一个成份股指数,是从上海证券交易所上市的全部A股股票中选取一部分具有代表性的样本股纳入指数计算范围,而现有的上证综合指数是由上海证券交易所编制的股票指数,     

时间加权回报率与货币加权回报率

全球投资业绩标准GIPS通常要求投资经理人以时间加权回报率作为投资业绩评估标准,时间投资回报率根据投资账户评估期间每次发生现金流量时所对应的期初市值和期终市值所计算出的回报率几何加权.但是时间加权投资回报率需要及时评估资产市值,因此存在着误差.另一个考虑到投资组合现金流的业绩评价方法就是贷币加权回报率,根据投资账户在评价期的期终市值、期初市值与当期发生的现金流推导出的内部曰报率.两种方法对于同一投资业绩有不一样的评估结果,其区别依赖于现金流量的大小和时刻.在此文中,将用数理方法论证二者之间的根本区别,借以论述二者应用的范围.     

股市有免费午餐吗——一个基于随机过程的理论分析

关于股市是否存在免费午餐,理论存在着截然不同的观点。一些经济学家依据有效市场假说,认为天下没有免费的午餐。然而,近年来人们逐渐认识到,在有关金融市场的理论模型中,某些形式巧妙的免费午餐是可以得到的。这一结果与基本的经济学原理相冲突,一些经济学家对解释这一有趣的问题做出了努力。本文从股票回报率随机波动的假设出发,利用伊滕定理,在关于投资组合回报率大于政府债券回报率的概率计算基础上,推导出股市存在免费午餐的条件,并对每一因素进行了分析和概率计算。在此基础上,对投资者提出了理性投资建议。     

基础设施特许经营中的投资回报率分析

在基础设施特许经营中,如何确定合理的投资回报率是政府和投资者特别关心的问题。根据计算回报率时要用的基数不同,分为资产回报率与资本回报率。资产回报率反映项目或企业全部经营资产的赢利能力,资本回报率反映项目或企业出资者的投资收益率。     

从上证180指数股的流通股变化看证券二级市场

上证180指数能够作为投资评价尺度及金融衍生产品基础的基准指数。通过上证180指数股股本结构中流通股变化进行分析,可以看出证券市场,尤其是二级市场的一些特征。     

上证50ETF流动性效应分析

本文首先使用沪市高频分笔数据对上证50指数成份股在上证50ETF上市前后的买卖价差、市场深度等流动性指标进行比较；其次，利用Glosten and Harris（1988）买卖价差分解模型对上证50ETF上市前后上证50指数成份股的成交买卖价差与逆向选择成本进行比较，得出的结论是：1、ETF具有显著提高标的股票与市场的流动性以及降低其逆向选择风险作用；2．股票价格水平与单位逆向选择成反方向变化。     

从上证180指数股的流通股变化看证券二级市场

上证180指数能够作为投资评价尺度及金融衍生产品基础的基准指数.通过上证180指数股股本结构中流通股变化进行分析,可以看出证券市场,尤其是二级市场的一些特征.     

股指期货推出时机和标的指数的选择

本文从分析我国股市的国内外环境入手,联系目前股市的股权分置改革,指出了推出股指期货交易的具体时机。在提出股指期货标的指数的选择原则的基础上,比较了四种成份股指数的特点,指出了标的指数的最佳选择。     

房地产业发展对资本回报率的影响

采用资本租金公式法测算资本回报率,结果显示,房地产业发展拉低了资本回报率,2003年之后愈加明显。通过对房地产业投资和资本回报率关系的检验,发现房地产业投资对实体经济影响有限,短期拉动作用表现为年度贡献,长期内存在较大的波动效应;房地产业发展对资本回报率省际趋同效应的减弱日益显著。     

专家理财战绩如何

十年前开始征战股市的小股民，个个对自己的身手自信满满，但如果计算一下投入资产的年回报率，又有多少人能获得年平均8％以上的收益呢？至少在我的周围，这样的人顶多不超过5个。     

Influence of dividend tax policy tied to investment horizon on stock price stability: Evidence from the 2015 dividend tax reform in China

We examine how the dividend tax cut policy tied to the investment horizon enforced on September 8, 2015, influences stock price stability in China's A-share market. As the new dividend tax policy waives the tax on cash dividends for investors holding a stock for more than a year, it encourages long-term investment behavior. From 2013 to 2017, we find that stock turnover, return volatility, and turnover volatility decrease after the policy enforcement, especially for stocks with high dividend yields. This result shows that dividend tax reforms increase investors' stock investment horizons and help stabilize the market. However, our findings demonstrate that stock crash risk increases after policy enforcement. Further analysis shows that earnings management through real activities manipulation for stocks with a higher dividend yield contributes to an increase in stock crash risk. Therefore, one externality of the dividend tax cut policy tied to the investment horizon is that top managers of firms with a higher dividend yield may take advantage of investors' passive longer-term investment behavior and engage in more earnings management. This result suggests that regulatory agencies should pay attention to top managers' earnings management behavior after enacting policies that encourage long-term investment.     

The Chinese Stock Markets on Trial: The Fat Finger Accident of Everbright Securities

Everbright Securities Ltd. erroneously submitted huge quantities of buy orders on SSE180 constituent stocks from 11:05 through 11:07 on 16 August 2013. This fat finger accident had a pronounced impact on the Chinese stock markets. This paper uses the accident to study market quality and investors’ responses. We show that the Chinese stock markets were robust enough to stand the trial, exhibiting deep depths and strong resiliency. However, the markets performed poorly in terms of aggregating information because there were large price swings after the erroneous orders were executed. Moreover, investors quickly change their beliefs as to the reasons to the dramatic price jumps, consistent with information cascade theory.     

The Economic Psychology of Stock Market Bubbles in China

The Chinese stock markets were extremely volatile during the period 2005–08. The Shanghai Stock Exchange (SSE) Composite Index increased more than sixfold from 1,012 in 2005 to 6,124 by the end of 2007. It then declined continuously to reach a low of 1,929 on 17 September 2008, or a drop of 70 per cent from its peak in less than 10 months. Although the market downturn may have been affected by the financial crisis in the United States and the rest of the world, the extreme fluctuations of stock prices signify a big market bubble, and the burst of that bubble must be explained by intrinsic characteristics or the economic psychology of Chinese investors. Based on a detailed market data analysis, this paper attributes the development of the stock market bubble to three key psychological factors: ‘greed’, ‘envy’ and ‘speculation’, and the burst of the bubble to three contrasting factors: ‘fear’, ‘lack of confidence’ and ‘disappointment’. It concludes that only after Chinese companies become really commercialised and profitable and investors become rational can the stock markets become stable without extreme volatility as seen in the past. Government policies can play a role in soothing market volatility detrimental to shareholders and the wider economy, but investors should not depend on government for making their own investment decisions.     

中国上市公司首次股票股利信号传递有效性的实证研究

20世纪90年代中后期股票股利曾是我国证券市场较为盛行的分配方式,并因能够带来积极的股价超额收益而被视为是一种典型的信号传递过程。然而本文通过对A股一般行业上市公司首次股票股利分配后的公司业绩进行长期跟踪考察,发现首次分配股票股利的公司无论盈利性或增长能力都明显持续下降,并不能充分支持信号传递假说。统计检验和模型分析均表明,在信息不对称条件下,公司盲目追求股权融资和市场过热的投资预期,在一定程度上削弱了我国股票股利政策传递积极信号的功能,这是这种分配方式不断降温的内在原因。     

A term structure model for dividends and interest rates

Over the last decade, dividends have become a standalone asset class instead of a mere side product of an equity investment. We introduce a framework based on polynomial jump‐diffusions to jointly price the term structures of dividends and interest rates. Prices for dividend futures, bonds, and the dividend paying stock are given in closed form. We present an efficient moment based approximation method for option pricing. In a calibration exercise we show that a parsimonious model specification has a good fit with Euribor interest rate swaps and swaptions, Euro Stoxx 50 Index dividend futures and dividend options, and Euro Stoxx 50 Index options.     

技术分析的经济收益与市场有效性

技术分析是现代金融市场中一种重要的投资分析工具。本文基于沪深两地的证券市场,对双重移动均线交错、交易区间突破、亚历山大过滤规则、相对强度指数等常用的技术交易规则进行了全面的实证检验,采用了参数优化和样本外测试的方法来解决数据过度挖掘的问题,考虑了交易成本和风险因素,发现技术分析确实能够产生显著的经济收益,这说明我国证券市场尚未达到弱式有效。     

Half-day trading and spillovers

This paper investigates the linkage of returns and volatilities between the United States and Chinese stock markets from January 2010 to March 2020. We use the dynamic conditional correlation (DCC) and asymmetric Baba–Engle–Kraft–Kroner (BEKK) GARCH models to calculate the time-varying correlations of these two markets and examine the return and volatility spillover effects between these two markets. The empirical results show that there are only unidirectional return spillovers from the U.S. stock market to the Chinese stock market. The U.S. stock market has a consistently positive spillover to China’s next day’s morning trading, but its impact on China’s next day’s afternoon trading appears to be insignificant. This finding implies that information in the U.S. stock market impacts the performance of the Chinese stock market differently in distinct semi-day trading. Moreover, with respect to the volatility, there are significant bidirectional spillover effects between these two markets.     

Investment opportunities and dividend omissions

This study examines the market's reaction to dividend omission announcements and finds that if dividends are skipped to preserve cash for good investments, investors do not necessarily regard the omission as negative information. Markets penalize firms for dividend omissions only in the absence of a good stream of investments. In addition, the positive relation between investment opportunity and abnormal stock returns around the announcements is stronger when the level of information asymmetry between management and the rest of the market participants is low. Additional tests reveal that good omitters overcome underperformance faster in the post period. Overall, the results suggest that financial markets interpret differently the information conveyed in the announcement of dividend omission depending on the firm's future prospects.     

股利政策的股东财富效应:来自中国股市的经验证据

Based on the special separated equity management structure of the listed companies in China and using a sample of the listed companies with distributed dividend in 2003 and 2004, this paper tests the shareholder wealth effects of dividend policy in Chinese separated equity market. Results show that shareholders of non-circulating stock get a high return rate by cash dividends, and circulating shareholders obtain a high short-term return rate by stock dividends. Translated from Nankai Guanli Pinglun 南开管理评论 (Nankai Business Review), 2006, 9(2): 4–10     

Foreign institutional investors and dividend policy: Evidence from China

This study examines whether foreign institutional investment influences firms’ dividend policies. Using data from all domestically listed nonfinancial firms in China during the period of 2003–2013, we find that foreign shareholding influences dividend decisions and vice versa.Furthermore, changes in dividend payments over time positively affect subsequent changes in foreign shareholding, but the opposite is not true. Our study indicates that foreign institutional investors do not change firms’ future dividend payments once they have made their investment choices in China. Moreover, they self-select into Chinese firms that pay high dividends. Our evidence suggests that in an institutional setting where foreign investors have tightly restricted access to local securities markets and a relatively high risk of expropriation by controlling shareholders exists, firms can use dividends to signal good investment opportunities to foreign investors.