本文以2005年以后我国证券市场的公开市场流通股股份回购为研究对象，着重于动机研究。我们发现存在两种类别公司。一类公司的宣告动因即真实动因，回购公告中的信息含量符合价值低估假说、财务灵活性假说和自由现金流假说等。另一类公司的回购宣告动因不全面，存在隐藏动因，甚至宣告动因本身并不真实。针对我国上市公司股份回购动因的差异化，我们进而提出了政策建议。

根据中国特殊的二元股权结构，在公司特征变量（公司规模、投资机会、盈利能力）的基础 之上，加入描述资本结构和股本结构两个变量，同时在控制变量中加入描述特质风险的变量，通过 Logistic 回归发现，六个变量均对中国现金股利政策有显著影响，且规模越大、盈利能力越好的上市 公司越倾向于支付现金股利，而投资机会越多、资产负债率越高、流通股比率越大、特质风险越大 的上市公司越不倾向于支付现金股利。将考虑特质风险的股利支付倾向变动和投资者偏好进行线性 回归，结果表明，当特质风险被控制后，中国上市公司的现金股利政策迎合投资者偏好。

本文以中国国有控股上市公司民营化并形成民营股东控股、但股权制衡结构不同 的公司为样本，研究不同性质的制衡股东是否具有不同的制衡效果，以及民营控股股东政治关系 对制衡效果的影响。本文发现，与一股独大公司相比，国有股东制衡公司更可能被控股股东掏空， 民营股东制衡公司更不可能被控股股东掏空。说明不同性质的制衡股东具有不同的制衡效果。本 文还发现，有政治关系的民营控股股东更可能掏空。

We examine the dynamic adjustment of cash holdings of publicly traded Chinese firms over the period 1998-2006. The empirical evidences are supportive of the dynamic trade-off theory of cash holdings. Importantly, there is strong evidence to support asymmetric adjustments. That is, the adjustments from above the target are significantly faster than adjustments from below. In addition, adjustment speeds are heterogeneous for firms facing differential adjustment costs. In particular, adjustment speed is negatively related to firm size, but positively related to the deviation from the target. Furthermore, in terms of adjustment method, Chinese listed firms make adjustments to their targets primarily through internal financing, while debt financing and dividend payment play a minimal role. Finally, we find that the precautionary motive arising from financial constraints explains the cash holdings adjustment behaviors of Chinese Listed firms well.

The paper studies the effect of social capital on the firms’ debt capacity and capital structure in China. We measure the social capital of China’s 31 provinces through four indexes: the number of NGOs per capita, the index of trust among peoples, the volunteer blood donation ratio of civics, and the money and material donation of civics. The results show that in those areas with more social capital, the firms are more likely to have higher debt ratio and longer debt maturity, and the firms can get debt financing with less tangible assets. And in those districts, the firms are easier to obtain bank credits and trade credits. The paper has two contributions to the economics literature: first, it confirms the economic value of social capital from a micro view; second, it provides a new perspective to understand the firms’ capital structure choice.

Multiunit structure can internalize the managerial market to promote competition among subsidiary managers, and create an internal capital market within firms to alleviate external financing constrains, and it also may lead to diversification to lower the operation risk and regulation. While it brings in more agency problem created by subsidiary managers, causing the efficiency of internal capital market and diversification confusing. Using the data of listed firms in China, an emerging market, this paper examines the efficiency of multiunit structure within the firm, investigating the influence on capital allocation and firm performance. We find that multiunit structure is better in emerging market since it is efficient in capital allocation, reducing the inefficient investment by reducing the overinvestment and alleviating the underinvestment, and the bright side of multiunit structure dominates the agency problem associated, thus beneficial for firm performance, both short-term and long-term accounting returns. In less developed capital market under current situation, multiunit structure is better.

The long-run underperformance of the initial public offerings is one of the three hot issues in IPO research area,until 2000,the scholars in China began to research it,hence,the related theory is far from absent,therefore,many theories need to be completed. The article studied the long-run performance of 174 shares issued in Small and Medium-sized Board from the day after the first trading day to three years.It found that the shares show underperformance since the first month after its going to public,which will continue to the second year.But the shares showed strong performance compared with the Shenzhen A-share Composite Index.

China began allowing short selling and margin trading in 90 stocks in March 2010. This event provides an opportunity to test the relative effect of margin trading and short selling. We find the prices of these 90 stocks decrease, on average, relative to peer stocks in China and cross-listed H-shares, suggesting that short selling dominates margin trading effects. Contrary to the regulators? intention, and recent empirical evidence, liquidity declines in the shortable stocks. This may imply avoidance of these stocks by uninformed investors. There is also evidence of higher bid-ask spreads following the regulation change.

This paper empirically models China’s stock prices using conventional fundamentals: corporate earnings, risk-free interest rate, and a proxy for equity risk premium. It uses the estimated long-run stock price misalignments to date booms and busts, and analyses equity market reforms and excess liquidity as potential drivers of these stock price misalignments. Our results show that China’s equity prices can be reasonable well modelled using fundamentals, but that various booms and busts can be identified. Policy actions, either taking the form of deposit rate changes, equity market reforms or excess liquidity, seem to have significantly contributed to these misalignments.

This paper examines the impact of renminbi revaluation on foreign firm valuation and, by implication, firm prospects. To deal with the potential endogeneity of exchange rate movements, we consider not just official announcements of exchange rate policy but also 27 instances of market-perceived changes in China’s currency policy driven by domestic or foreign political pressure. Using information on 12,300 firms in 44 countries, we find that stock returns increased with renminbi revaluation expectations. This reaction was related as much to improved market sentiment as to specific trade channels, however. In terms of trade channels, we find that expectations of renminbi appreciation reduce the relative stock returns of firms providing components and raw materials to China as inputs for the country’s exports. There is also some evidence that expectations of renminbi appreciation reduce the stock prices of financiallyconstrained firms.