货币政策不确定性与企业现金持有——现金股利视角的新解释

研究利用中国A股上市公司样本,系统探讨了货币政策不确定性对企业现金持有策略的影响.研究发现:随着货币政策不确定性的提高,企业现金持有水平降低.深入研究发现货币政策不确定性对企业现金持有策略的影响主要通过现金股利渠道发挥作用,即在货币政策不确定性较高时期,企业持有的现金更多用于支持现金股利分配,籍此向市场传递积极信号.进一步研究排除了投资机会与代理成本等潜在干扰因素的影响,并且结合产权性质差异的分析发现货币政策不确定性对于非国有企业现金持有策略的影响更为明显.研究一方面基于不确定性视角为货币政策如何影响企业现金管理策略提出了新解释——现金股利渠道,有助于更好地理解我国上市公司的现金持有策略;另一方面也说明货币政策频繁调整所导致的货币政策不确定性很可能是加剧实体经济经营风险的宏观诱因.     

信贷配给、流动性冲击和民营企业现金持有

融资约束的存在要求企业持有必要的现金以预防可能的流动性冲击。不同于以往研究,本文从融资数量的硬约束——信贷配给视角将企业现金持有水平及其经济后果的考察纳入到一个统一的理论框架,并运用实证的方法研究流动性冲击下我国民营上市公司的现金持有行为。研究表明：民营上市公司持有高额现金的原因出于在信贷配给约束下的预防性动机;在遭受流动性冲击时,增持现金对民营上市公司具有正向的价值效应,且信贷配给水平越高的企业这种正向效应越显著。     

宏观经济不确定性、融资约束与企业现金持有行为——来自中国上市公司的经验证据

本文建立一个简化的存货缓冲模型来形式化管理者的现金持有决策,并基于中国非金融类上市公司2001-2009年间的面板数据,考察不同融资约束条件下宏观经济不确定性对企业现金持有行为的影响。研究发现,宏观经济不确定性对企业的现金持有水平具有显著的正向影响;相比于低融资约束的公司,高融资约束公司的现金持有水平对宏观经济不确定性变化具有更高的敏感性。研究结果有助于增进对中国制度情境下企业流动性需求行为的理解。     

Corporate Cash Holding in Asia

In this paper, we analyze the determinants of corporate saving in the form of changes in cash holdings for 11 Asian economies using firm‐level data from the Oriana Database for the 2002–2011 period. We find some evidence that cash flow has a positive impact on the change in cash holdings (i.e. that the cash flow sensitivity of cash is positive) and that the positive impact of cash flow on the change in cash holdings is larger and more significant in the case of smaller and presumably more constrained firms than in the case of larger and presumably less constrained firms in both developed and developing economies. Both of these findings corroborate the importance of financial constraints in Asian firms. In addition, we find that the cash flow sensitivity of cash declined after the global financial crisis and that Tobin's q has a positive impact on the change in cash holdings, especially in the case of larger and presumably unconstrained firms.     

上市公司现金持有过量对投资行为及效率的影响分析

文章以1998-2006年连续4年以上有数据的沪深股市的上市公司为样本,实证分析现金持有过量对公司投资行为及其效率的影响。实证发现：（1）现金持有过量越多,公司的长期投资能力增强。（2）暂时性和持续性过量的公司相比,过量现金对投资行为的影响表现存在差异。（3）过量现金持有对公司业绩提升无贡献;过量现金的投资使用效率低下,普遍存在过度投资现象。     

The Impact of Firm Size and Liquidity on the Cost of External Finance in Africa

Established illiquidity measures are constructed for emerging markets in Africa and used to determine which best explains trading costs. Costs of equity are derived from an augmented Capital Asset Pricing Model for a sample of emerging financial markets generally ignored in the literature. These include: South Africa and Namibia, three countries in North Africa and four in Sub‐Saharan Africa (SSA), plus London and Paris as examples of integrated markets. Minimum variance portfolios are constructed and asset weights derived, with the sample divided into countries dependent on their legal regime. Portfolio weights are shown to be directly related to well‐regulated markets with high standards of corporate governance and disclosure, and firms seeking cost‐effective finance from SSA stock markets are at a distinct disadvantage compared with those in Northern Africa, South Africa and, in particular, London and Paris.     

Global Financial Crises and Time‐Varying Volatility Comovement in World Equity Markets

This paper studies volatility comovement in world equity markets between 1994 and 2008. Global volatility factors are extracted from a panel of monthly volatility proxies relating to 25 developed and 20 emerging stock markets. A dynamic factor model (FM) is estimated using two‐year rolling‐window regressions. The FM's time‐varying variance shares of global factors map variations in volatility comovement over time and across countries. The results indicate that global volatility linkages are significantly stronger during financial crisis periods in Asia (1997‐1998), Brazil (1999), Russia (1998) and the United States (2000, 2007‐2008). Emerging markets are weakly synchronised with world volatility in comparison with developed markets. In particular, emerging market comovement is significantly lower than developed market comovement during the Asian and US sub‐prime crises. This suggests a degree of decoupling of emerging markets from the global drivers of volatility during these periods.