The impact on stock prices of deferral and elimination of internal control audit requirement for small firms

This paper examines the cumulative market reaction to the events related to deferral of internal control audit requirement under the Sarbanes-Oxley Act of 2002 and its elimination under the Dodd-Frank Act of 2010 for nonaccelerated filers (small firms). We document that small firms experienced negative cumulative abnormal returns around these events; and the differences between the cumulative abnormal returns for small firms and the two control groups (accelerated and large accelerated filers) were negative and significant at the 1% level. These results support the notion that market participants value the reliability of financial information irrespective of the firm size. Within the small firms, we find no firm characteristic significantly explains the market reaction to the events considered. That is, all small firms lost market value in reaction to the events that delayed and eliminated their internal control audit requirement.     

社保基金持股信息的市场反应——基于中国资本市场数据

在阐释社保基金及其投资情况和相关理论的基础上,采用超额收益法和多元回归分析法,分析我国资本市场对2009年四个季度和2010前两个季度公布的社保基金持股信息的反应。研究结果显示,资本市场对社保基金持股信息具有强烈的市场反应,被社保基金持股的上市公司股价超额收益非常明显。造成这种现象的原因除了社保基金管理者对股市精准把握外,我国资本市场的效率不足、信息不对称及社会保险基金会计信息披露的缺陷也是重要原因。因此,我国应加强公司治理,提高资本市场效率,规范社保基金会计信息披露。     

深化增值税改革的市场反应及影响因素

运用事件研究法和多元回归法考察 “深化增值税改革”（2018年3月28日国务院常务会议）的市场反应及其影响因素。结果表明：尽管中美“贸易战”对股市产生了较大的负面影响,但投资者仍将“深化增值税改革”视为利好消息,且试点行业的市场反应都显著为正。从市场反应影响因素来看,研发支出越多、融资约束越强的公司市场反应更好。此外,进一步细分公司特征发现,高税收敏感度和高产品市场竞争程度的公司市场反应更加积极,存在超额雇佣且研发支出较高以及不存在超额雇佣但融资约束较高的公司市场反应也更加积极。     

深圳股市对股权分置改革有何反应——来自第二批试点公司的实证检验

本文以深圳股市第二批试点公司为研究样本，通过赢家、输家股票组合超常日收益率的统计分析。以及累积超常日收益率的趋势分析，研究深圳股市对股权分置改革的短期反应。实证检验结果表明。在短期内，深圳股市存在过度反应。并且在公司股改预案披露后30个左右交易日，市场做出反向修正．     

股权分置改革：效应分析与优化对策

本文在简要分析股权分置制度缺陷的基础上,探讨了股权分置改革将使资本市场产生的效应,分析股权分置改革完成后中国证券市场在功能、规则、行为、理念和监管等领域可能发生的重大变化,为深入推进我国股权分置改革提供借鉴和建议。     

Reactive or proactive? Investor sentiment as a driver of corporate social responsibility

Investors and financial markets have been a neglected stakeholder group in studies on a firm’s motivations to be socially and environmentally responsible. Despite being a strong driving force behind firm value, no study has investigated the influence of market and investor sentiments on CSR behaviour. Using a global sample, we investigate the effects of market and investor sentiments on firm CSR performance. We find negative market and investor sentiments in the prior year motivate firms to improve their CSR performance in the next year. We also find the magnitude of improvement in CSR performance differs not only by country, but by CSR sub-category as well. These findings imply that a firm’s motivation to improve its CSR performance is reactionary, rather than being driven by altruism. Regulators and proponents of CSR should thus seek to persuade investors and financial markets to put pressure on firms to further advance the CSR agenda.     

投资者保护、金字塔结构与控制权私有收益

本文以沪深两市A股2004年-2007年度非流通股交易发生控制权转移公司为样本,基于投资者保护角度研究金字塔结构与控制权私有收益的关系。研究发现,两权分高度、金字塔结构控制层级、控制链条及其复杂程度与控制权私有收益显著正相关,金字塔结构实质上成为控股股东获取控制权私有收益的传送带;进一步检验发现,投资者保护环境的改善在降低控制权私有收益的同时,还能抑制金字塔结构与控制权私有收益的正相关性。     

曼尼期反应在药物合成中的应用

鉴于曼尼期反应是重要的有机合成反应,且在新药合成中广泛应用,介绍了其在抗抑郁药、止吐药、抗癌药、抗心律失常药、解痉药、抗病毒药、抗疟药、前体药等方面的应用,希望能推动曼尼期反应在新药合成中的更广泛应用和甲基化反应的更深入发展。     

The determinants of austerity in the European Union 2010–16

This paper aims at decteting what drove the adoption of austerity policies over the period 2010–16 in a panel of 28 European countries. Austerity is identified by year increases in the ratio between the structural primary balance and potential GDP. By means of principal component factor analysis we select the aggregate factors that might affect austerity, namely (i) fiscal consolidation (correction of high deficits and debts), (ii) market discipline (high sovereign spreads, low ratings), (iii) rule-based fiscal discipline (compliance with the Eurozone rules), and macroeconomic stabilisation (consideration for the cyclical position of the economy). Then we estimate a dynamic panel model with the system-GMM method. Results show that the most important contributions to austerity are provided by the market discipline and fiscal consolidation factors together with Excessive Deficit Procedures, with no significant role played by concomitant macroeconomic conditions. Overall, governments complied with orthodox fiscal principles and rules.