信息披露质量与市场流动性

本文以深交所A股上市公司为样本．研究上市公司的信息披露整体质量是否影响公司股票在市场上的流动性。基于分笔高频交易数据．检验集中于流动性的两个关键方面：市场宽度和市场深度。采用稳健的非线性两阶段最小二乘法来克服信息披露的自选择特点所引起的内生性问题。实证结果显示，公司高质量的信息披露能有效提高其股票的市场流动性，这种影响主要是通过缩小市场宽度来达到．而对市场深度的影响不显著。利用市场微观结构的价差分解方法的研究发现．高质量的信息披露提高市场流动性的机制在于有效减轻市场上信息不对称程度。     

流动性、生命周期与投资组合相异性——中国投资者行为调查实证分析

本文采用Probit和Tobit模型对中国居民的股票市场参与和投资组合的影响因素进行了分析,主要有以下的实证发现:首先,不流动性资产特别是房地产的投资显著影响了投资者的股票市场参与和投资组合,而且影响以“替代”效应或者说“挤出”效应为主。其次,投资者在进行投资组合时极少利用股票市场对其未来现金流所承担的风险进行对冲,也就是说,中国居民投资的“生命周期效应”不明显;第三,中国居民投资的“财富效应”非常显著。财富的增加既增加了居民参与股票市场的概率,也增加了居民参与股票市场的深度。     

There is no smoke without a fire: The effect of government interventions in less advanced economies

The lack of liquidity in the interbank market during the crisis of 2007–2011 led governments to impose different policies to rescue their countries’ banking sectors. While in advanced countries interventions in the banking sector were mostly related to a lack of liquidity and significant asymmetric information regarding counterparty risk, in many less advanced countries they had a precautionary motive. In our article, we investigate the effectiveness of policy interventions on healthy banking markets, with possible negative spill-over effects from other countries. To this extent, we use an event study methodology to test the effect of liquidity and financial sector policy announcements on interbank spread changes in six Central and Eastern European (CEE) countries over the period between 2007 and 2011. We find that standard liquidity interventions did not provide effective stabilization. In fact, our evidence suggests that the spread widened after their announcement, probably as a result of the negative signal and consequently increased risk aversion of banks. In such situations, regulators should consider policy instruments that aim to decrease uncertainty in the market.     

Optimal savings with taxable and tax-deferred accounts

We solve and estimate a life-cycle model with earnings risk and liquidity constraints in the presence of tax-deferred retirement accounts (TDAs). We explicitly consider two very different types of households (with TDAs): direct and indirect stockholders. The latter hold stocks only through TDAs and, consistent with the data, save considerably less than the former, who hold stocks both inside and outside these accounts. We find that TDAs promote higher wealth accumulation but only marginally higher net savings. Consumption increases mostly during retirement, as desired, but the effect is largest for those households with higher savings rates already.     

Optimal order display in limit order markets with liquidity competition

Order display is associated with benefits and costs. Benefits arise from increased execution-priority, while costs are due to adverse market impact. We analyze a structural model of optimal order placement that captures trade-off between the costs and benefits of order display. For a benchmark model of pure liquidity competition, we give a closed-form solution for optimal display sizes. We show that competition in liquidity supply incentivizes the use of hidden orders to prevent losses due to over-bidding. Thus, because aggressive liquidity competition is more prevalent in liquid stocks, our model predicts that the proportion of hidden liquidity is higher in liquid markets. Our theoretical considerations ares supported by an empirical analysis using high-frequency order-message data from NASDAQ. We find that there are no benefits in hiding orders in il-liquid stocks, whereas the performance gains can be significant in liquid stocks.     

Size,value, and momentum in developed country equity returns: Macroeconomic and liquidity exposures

The paper investigates value and momentum factors in 23 developed international stock markets. We find that typically value and momentum premia are smaller and more negatively correlated for large market capitalization stocks relative to small. Momentum factors are more highly correlated internationally relative to value. We provide international evidence on three sets of risk exposures of value and momentum returns: macroeconomic risk, funding liquidity risk, and stock market liquidity risk. We find that value returns are typically lower prior to a recession while momentum returns often exhibit little sensitivity. Value returns are typically lower in times of poor funding liquidity, whereas, with notable exceptions, momentum returns are typically unaffected. Lastly, for almost all countries, value returns are high in poor stock market liquidity conditions.     

Understanding Benign Liquidity Traps: The Case of Japan

Japan has been in a benign liquidity trap since the 1990s. In a benign liquidity trap, interest rates approach zero and monetary policy is ineffective but output and employment perform decently. Such a pattern contradicts traditional macro theories. This paper introduces a monetary general equilibrium model that is compatible with Japan's performance and resolves puzzles associated with liquidity traps. Possible conclusions for Anglo‐Saxon countries and eurozone members are also discussed.     

企业研发投入、资源特征与创新绩效关系研究

基于资源基础观,探讨了企业“资源池”中财务资源特征与技术资源特征如何与研发投入行为匹配以提升创新绩效,以创业板355家企业为样本开展泊松回归分析,研究发现：R&D投入与创新绩效存在倒U型关系;财务资源特征——资产流动性对R&D投入与创新绩效存在正向调节作用,起着“加速剂”作用;由于组织技术路径依赖,技术资源特征——技术积累程度对R&D投入与创新绩效存在负向调节作用,起着“缓冲剂”作用;资产流动性与技术积累程度提高会促进研发投入与创新绩效关系的阈值提高,促进更多研发投入有效转化。探讨了企业研发投入行为与资源特征的匹配,可为促进创新绩效提升提供理论支撑。     

流动性与资产定价:基于我国股市资产换手率与预期收益的实证研究

流动性与资产定价是目前金融研究的热点之一 (O’Hara,2 0 0 3 )。本文通过检验交易频率零假设和交易成本备择假设 ,深入分析我国股市流动性与资产定价的理论与经验关系 ,发现 :我国股市存在显著的流动性溢价 ,换手率低、交易成本高且流动性小的资产具有较高的预期收益 ;产生流动性溢价的原因是交易成本而不是交易频率 ;与国外股市相似 ,小企业收益率高于大企业 ,价值股收益率高于成长股。因此 ,我国股市并非令人无法捉摸 ,流动性、规模和价值效应都是资产定价的因素