The firm''s leverage-cash flow relationship

Two separate strands of the literature on capital structure under asymmetric information consider the relationship between a firm's financial leverage and cash flow. Signalling theory suggests a positive relationship, while pecking order behavior implies a negative relationship. These contrasting theoretical implications appear contradictory. However, both are supported in different bodies of empirical literature. Leverage-changing event studies tend to support a positive relationship while cross-sectional studies typically reveal a negative relationship. This paper proposes that the appropriate pecking order relationship is contemporaneous — between current leverage and current cash flow, while the relevant signalling relationship is intertemporal-between current leverage and future cash flow. A dynamic simultaneous equations model is built which allows the firm's leverage, cash flow, and risk to interact jointly in the same period, as well as across time. Empirical results reveal that, in the same time period, leverage and cash flow tend to be negatively related, while across time leverage is positively related to future cash flow. Thus the apparent contradictions in the theoretical and empirical literature may be reconciled by considering both the contemporaneous and dynamic aspects of the firm's leverage/cash flow relationship.     

股票市场对国有股减持的过度反应分析

国有股减持造成股票市场的结构性变动 ,并改变了市场长期以来的定价机制与价值评价标准。沪深股市对此反应程度不一 ,沪市存在过度反应的现象 ,而深市则不存在。造成市场过度反应的原因既包括结构非理性的因素 ,也有投资者非理性心理的作用。减持国有股应综合考虑市场改革的历史背景与规范化趋势、市场公平与资源配置功能的维护等因素 ,逐步推进     

浅析我国资本市场中股市与债市的失衡问题--兼论股票市场与债券市场对金融市场发展的影响

我国的资本市场目前存在着比较严重的结构失衡问题 ,这将制约资本市场发挥其应有的作用。本文主要对我国资本市场中存在的股市与债市的失衡问题进行了分析 ,并从资本市场与金融市场的相关关系角度 ,论述“只有保持资本市场中股市与债市的共存与协调比例发展 ,才会有助于资本市场或金融市场对于一国经济发展产生积极影响”这一观点     

强制性分红:压力下移与盈余管理——基于央企控股上市公司的经验证据

国有资本收益上缴制度是一项强制性分红制度,这种政策带来的强制性分红压力会沿着企业控制层级往下转移.本文实证检验了强制性分红对中央企业盈余管理行为的影响.研究发现,中央企业会通过减少盈余的方式规避该政策带来的压力,尤其是,金子塔层级越低的中央企业这种规避行为越明显.进一步,中央企业面临强制性分红压力与业绩考核压力时,更注重业绩考核的影响.本研究有助于更加全面、准确地评价国有资本收益分配制度的实施效果,为政策优化提供经验证据.     

Stock volatility predictability in bull and bear markets

The recent literature on stock return predictability suggests that it varies substantially across economic states, being strongest during bad economic times. In line with this evidence, we document that stock volatility predictability is also state dependent. In particular, in this paper, we use a large data set of high-frequency data on individual stocks and a few popular time-series volatility models to comprehensively examine how volatility forecastability varies across bull and bear states of the stock market. We find that the volatility forecast horizon is substantially longer when the market is in a bear state than when it is in a bull state. In addition, over all but the shortest horizons, the volatility forecast accuracy is higher when the market is in a bear state. This difference increases as the forecast horizon lengthens. Our study concludes that stock volatility predictability is strongest during bad economic times, proxied by bear market states.     

中国上市公司独立董事制度研究

独立董事制度在中国上市公司中实施只有四年左右的时间.本文通过独立董事制度实施以来存在问题的研究,从公司治理结构与独立董事制度、独立董事制度产生的基础、股权结构与独立董事制度以及独立董事本身等方面进行了深层次探索,认为完善独立董事制度应从体制和政策调整两方面共同进行.体制方面,完善在国内外公司治理结构模式的比较分析基础上,将独立董事制度与公司治理结构结合起来.从政策调整方面,应从独立董事职责、独立董事产生机制、独立董事监管体系的形成、独立董事工作制度等诸方面加以调整和完善,以使独立董事制度发挥其真正的效用.     

股权分置与大股东权力寻租的治理

我国股市的股权分置制度和公司治理制度的不完善,导致了上市公司的非流通股股东利用本身绝对控股的权力,进行权力寻租,侵蚀上市公司利益,损害其他股东权益,导致我国资本市场的低效率.本文提出了建立起针对投融资人的资信评价体系;以新带老,缩小流通股与非流通股价差;加强公司内部治理制度和证券市场监管等措施,规范非流通股股东行为,防止大股东权力寻租的一些方法.     

我国股票市场的财富效应和投资效应的实证研究

本文分析我国股票市场的发展是否有助于刺激居民消费和企业投资。实证研究的结果表明,我国股票市场还不具有财富效应,影响居民消费的主要因素仍然是可支配收入和消费习惯。不过,我国股票市场已经存在一定的投资效应,但这种影响还比较小。本文认为,目前我国股票市场对宏观经济的作用非常有限,所以不能企图通过刺激股市来推动经济增长。     

Dollar exchange rate and stock price: evidence from multivariate cointegration and error correction model

In this paper, we investigate existence of long-run equilibrium relationships among the aggregate stock price, industrial production, real exchange rate, interest rate, and inflation in the United States. Applying Johansen's cointegration analysis to monthly data for the 1974:01-1998:12 period, we find that the S&P 500 stock price is positively related to the industrial production but negatively to the real exchange rate, interest rate, and inflation. Analysis of error correction mechanism reveals that the stock price, industrial production, and inflation adjust to correct disequilibrium among the five variables, while variance decompositions indicate that the stock price is driven to a considerable extent by innovations in the interest rate. Structural stability tests show that the parameters of the cointegrating system and the error correction term are stationary.