国有机构投资者持股能提升企业投资效率吗?

具有国资背景的机构投资者,对于资本市场平稳发展具有重要意义。本文基于我国2015—2019年A股上市公司样本,考察持股对企业投资效率的影响。研究发现,持股显著提升了企业投资效率,并且该影响在代理冲突更严重和所处信息环境更不透明的公司中更加显著。机制检验表明,降低企业内外部信息不对称和代理成本是持股提升企业投资效率的重要渠道。进一步研究发现,国有机构投资者持股时间越长,对企业非效率投资的治理效果越好;细分国有机构投资者类型后发现,致力于长期维护资本市场稳定和上市公司长期健康发展的证金公司和汇金公司对企业投资效率的提升作用显著,但没有发现“救市”基金和外管局旗下的投资平台对企业投资效率有提升作用。研究结论从企业投资效率视角为国有机构投资者持股在微观企业日常经营中发挥的治理作用提供了新颖的经验证据,对进一步提高我国上市公司质量具有启示意义。     

Overflow effect of credit rating announcements on stock exchange based on event study

This study is aimed to identify the impact of credit rating announcements on the stock returns in stock markets and for this purpose, four different sectors of Pakistan stock exchange were selected and from each of these four sectors, different business organizations were selected, i.e. total 32 business organizations were selected. The credit rating announcement data were collected for these 32 business organizations belonging to four different sectors. Totally 101 credit rating announcements were selected and the time period for which the credit rating warnings were selected include last three years period, i.e. from 2014 to 2016. The collected data were analysed by calculating abnormal returns for each of the selected security and average abnormal returns, and cumulative average abnormal returns were calculated for four different sectors. Event study methodology was applied, and t-test and t-stats value were calculated and results were analysed on the basis of t-statistics. The results of analysis identified that credit rating announcements have a significant impact on stock prices and investors and other market participants are earning abnormal returns during two-day period after the announcements are made. In addition, these abnormal returns were either negative or positive, depending upon the nature of credit ratings announced. If the credit rating announced was upgraded, investors enjoyed positive abnormal returns while in case when credit rating announcements were downgraded, then investors bear negative abnormal returns. Finally, the findings of the study identified the applicability of random walk hypothesis on the Pakistan Stock Exchange and Pakistan Stock Exchange confirms the efficient market hypothesis with its semi-strong form of efficiency.     

盈余信息披露、投资者行为与市场内幕交易

本文以2008—2017年的季报、半年报和年报盈余公告信息为研究对象,利用Fama MacBeth横截面回归方法考察了公司高管和机构投资者的内幕交易行为。研究发现：（1）我国股票市场的盈余漂移异象在盈余公告前后具有明显的非对称性,股价倾向于在盈余公告前（后）对“好（坏）消息”反应过度、对“坏（好）消息”反应不足;（2）盈余公告前,机构投资者的资金净流入（出）与公司的未预期盈余之间呈显著正相关关系;（3）盈余漂移异象在不同板块之间存在明显的分化效应,在盈余公告前,主板市场对“好消息”的反应程度弱于中小板和创业板,而在盈余公告后正好相反。     

中国认购权证市场价格偏差的实证研究

随着股权分置改革,中国的A股权证被再次推出,它的诞生丰富了投资者的交易品种,对建立多层次多维度的资本市场发挥了积极的作用.但是中国的A股权证市场仍存在诸多问题,实际价格偏离理论价格的现象司空见惯,其交易品种与交易规模不对称的现象也一直伴随着A股权证市场的发展.基于业内与学术界对A股权证价格偏差的困惑,本文利用混合回归模型和面板数据模型的实证方法,对认购权证市场价格偏差的研究发现,投资者对认购权证的频繁操作和投机炒作是导致价格偏差的重要原因,并且认购权证的创设制度对于抑制价格偏差的作用非常有限.此外,本文结合研究的实证结果,从创新A股权证产品和完善市场交易制度的角度,提出了完善和发展中国A股权证市场的政策建议.     

商业银行发行理财产品与股价崩盘风险

商业银行在我国金融体系中的地位举足轻重,是金融系统性风险的重要来源。近年来,理财业务的高速成长为商业银行累积了大量的风险,但无论是监管层、业界还是学界,对银行理财产品的关注主要集中在理财产品驱动因素以及其对商业银行业绩的影响上,忽略了商业银行发行理财产品所引发的风险累积及其对资本市场稳定的潜在影响。因此,本文利用2006—2016年中国境内上市银行理财产品的发行数据,从股价崩盘的角度研究其对银行自身股价产生的影响。本文研究表明:银行理财产品的发行会带来自身股价崩盘风险,理财产品发行数量越大,其股价崩盘风险越大;监管压力和理财产品刚性会加剧股价崩盘风险的发生。基于此,本文建议:相关监管机构重点关注监管考核压力较大的商业银行,商业银行要做好投资者的教育工作,淡化预期收益概念,并落实理财产品信息披露制度,更多地发行"开放式净值型"理财产品。     

Investor reaction to IMF actions in the indonesian financial crisis

Many observers have criticized recent IMF actions and program announcements during the Asian crisis by arguing that the IMF's declaration that Asia needed drastic reforms with respect to institutional issues such as transparency, corporate governance and corruption has led investors to panic and withdraw from the region. We examine the reaction of investors in the Indonesian stock market to IMF news. Evidence indicates that IMF actions and program announcements are associated with a decline in market uncertainty. Hence, our finding does not appear to support the panic view. Policy implications of the findings are also discussed.     

Unexpected Share Repurchase Announcements

Abstract

Open-market stock repurchase announcements are generally perceived by the stock market as a signal of firm undervaluation. Our study shows that repurchase announcements that were preceded by SEOs of other firms in the same industry within the prior six months (namely SEO-RPs) are more likely the result of lacking investment opportunities than signaling undervaluation, especially in concentrated industries. Specifically, we find investors response negatively to SEO-RP announcements while react positively to regular repurchase announcements. The higher the intensity of SEO activities in the industry, the more negative market reaction to SEO-RP announcements. We argue that the market doesn’t expect a repurchase announcement when other rival firms are raising more capital via SEOs. These SEO-RPs represent a negative surprise to the market and lead to a downward adjustment in value of the repurchasing firms in the announcement window. In the three-year post-announcement periods, the SEO-RP firms underperform regular repurchasing firms in both stock return and operating performance. Moreover, while regular repurchasing firms gradually increase their capital expenditures, SEO-RP firms significantly reduce their capital expenditures. These findings support our arguments that repurchase announcements that immediately follow SEOs of rival firms (SEO-RPs) more likely indicate the announcing firms entering a slower growth rate with fewer investment opportunities than signal the undervaluation problem. The underperformance in stock return and operation combined with a significant reduction in capital expenditures in the post-announcement periods are consistent with this logic and also explain why the market reacts negatively to SEO-RP announcements.     

Do Market‐based Indicators Anticipate Rating Agencies? Evidence for International Banks

This paper analyses the ability of credit default swap (CDS) spreads, bond spreads and stock prices to anticipate the decisions of the main rating agencies, regarding the largest international banks. Conditional on negative rating events, all the three indicators show significant abnormal changes before both announcements of review and actual credit rating changes, but rating actions still seem to convey new information to the market. Results for positive rating events are less clear‐cut with the market indicators generally showing abnormal behaviours only in conjunction with the events. As for the predictive power of the financial indicators examined, the CDS market is particularly useful for negative events and stock prices for positive events. However, all indicators also send many false signals and are to be interpreted with care.     

Contingent convertible bonds: Who invests in European CoCos?

Using a comprehensive data set on issuances and holdings of contingent convertible debt instruments (CoCos) issued by European banks, we investigate who invests in European CoCos. The results indicate that most European CoCos are not directly held by euro area investors. Foreign investors outside the euro area and investment funds located in Ireland and Luxembourg hold the large majority. Euro area banks, insurers and pension funds only have very limited direct exposures. Households in the euro area hold almost no direct positions in European CoCos, although there could be indirect holdings through non-euro area entities and euro area investment funds. Concerns for contagion through cross-holdings of CoCos by banks seem to be unwarranted.     

Analysis of long-run benefits from international equity diversification between Taiwan and its major European trading partners: an empirical note

This paper employs four cointegration test approaches, PO, HI, JJ and KSS, to test for pairwise long-run equilibrium relationships between Taiwan's stock price index and each of the stock price indexes of four European markets – French, German, Dutch, and British stock markets. The results from these four tests are robust and clearly consistent in suggesting that the Taiwan stock market is not pairwise cointegrated with the four European stock markets. This provides strong evidence that there exist long-run benefits for Taiwan investors diversifying in the equity markets of Taiwan's major European trading partners, France, Germany, Holland, and the UK, over the sample period considered from 6 January 1998 to 30 May 2002. These findings could be valuable to Taiwan individual investors and financial institutions holding long-run investment portfolios in the equity markets of France, Germany, Holland, and the UK.     

保险资金持股与股价崩盘风险——市场“稳定器”还是崩盘“加速器”?

现阶段,有关保险资金持股与资本市场稳定相互关系的讨论多止于推测,少有学者以大样本数据进行实证考察。在理论上,保险资金持股上市公司,一方面可以抑制经理人负面信息隐藏,作为市场“稳定器”降低股价暴跌风险;另一方面,也能引发投资者跟风炒作,导致市场情绪高涨和股价高估,成为股价崩盘风险的“加速器”。本文基于2007—2016年中国沪深两市A股上市公司的数据,实证分析保险资金持股上市公司是否加剧市场暴跌及其作用机制。结果显示:保险资金持股加剧了股价崩盘风险,是公司股价崩盘的“加速器”。这一结论在经过DID模型、工具变量回归、PSM+OLS等内生性分析,以及稳健性检验之后依然成立。进一步研究表明,相比于民营、小型和财产保险公司,在股市投资规模更大的国有、大型和人寿保险公司更能引发市场跟风炒作,加剧股价崩盘风险;不过,当保险资金作为前十大股东参与公司治理时则能够降低股价崩盘风险。本文不仅为保险资金持股与资本市场稳定相互关系的讨论提供了经验证据,也为规范保险资金股权投资,维护资本市场稳定提供有益借鉴。     

行为金融视角下中国证券市场投资策略研究

本文根据我国证券投资基金发展的实际情况,运用代理关系下的有限套利模型和行为资产组合理论,建立面板数据模型,对影响我国基金投资收益的因素进行了实证研究。得出以下结论:代理关系和心理账户对证券投资基金的收益影响显著;对于基金的代理人——基金经理而言,建立有效的基金经理人信用评级制度有利于培养优秀的机构投资者,同时可促进我国证券市场的健康发展。     

Socially responsible investment in an environmental overlapping generations model

One of the problems associated with the conservation of the environment is that short-lived individuals fail to account for the long-term effects of pollution, which implies that future generations bear the costs imposed by the current generation. Such inter-generational externalities are usually tackled by (Pigovian) taxes, fiscal policy or environmental regulation. Alternatively, we propose that socially responsible investment funds create a role for the stock market to deal with intergenerational environmental externalities. We analyze the role of the stock market in an environmental overlapping generations model of the Diamond-type, in which agents choose between investing in “clean” government bonds or “polluting” firm equity. We show that although socially responsible investors are short-lived, the forward-looking nature of stock prices can help to resolve the conflict between current and future generations.     

Stock market-driven investment: new evidence on information,financing and agency effects

This study provides a theoretical model and empirical analysis to jointly examine the information, financing and agency effects, the three channels through which the stock market can actively influence corporate investment decisions and firm performance. First, stock market affects corporate investments, and such impact varies with different market valuation measures, types of investments and firm characteristics. Second, stock market valuation affects investments through the channel of corporate financing, supporting the financing hypothesis. Third, stock market-driven investments have differential impacts on the future operating performance of firms. Investments driven by market valuation of firm-specific information have a positive effect on future performance. In contrast, investments driven by market-wide sentiment have a negative effect on future performance. Fourth, consistent with the information hypothesis, market-driven investments are value-enhancing for firms with better external monitoring by analysts and institutional investors. Lastly, consistent with the agency hypothesis, market-driven investments are value-destroying when firms lack external monitoring, proper managerial incentives and independent board of directors.     

控股股东股权质押、控制权转移风险与广告投入

股权质押使控股股东面临控制权转移风险,其有动机进行市值管理。本文以2011-2019年中国A股上市公司为样本,考察股权质押情境下控股股东是否存在调整广告投入的行为。研究结果发现,控股股东进行股权质押后,公司广告投入水平显著提高,说明股权质押情境下控股股东会通过策略性地增加广告投入进行信息管理,而非通过削减广告投入进行向上盈余管理,证实广告具有短期股票回报效应;控制权转移风险较大时,控股股东股权质押对广告投入的正向影响更明显,说明股权质押情境下控股股东增加广告投入是出于缓解控制权转移风险的动机。进一步研究发现,在散户规模较大和产品直接与消费者接触的企业,广告更容易吸引投资者注意力,此时控股股东增加广告投入的动机更强,该行为短期内可以提振股价,但没有起到改善经营业绩的作用且加剧了股价波动。本文为资本市场和产品市场的联系提供了证据,且对相关部门加强上市公司广告费用监管具有一定的政策参考价值。     

Sukuk vs. conventional bonds: A stock market perspective

The last decade witnessed a wide expansion of Islamic finance in Middle Eastern and Southeast Asian countries. Sukuk issues, which are Islamic financial instruments structured to replicate the cash flows of conventional bonds, have notably proliferated, fuelling the debate on the similarity between Islamic and conventional finance. Using an event study methodology on a sample of Malaysian listed companies, we investigate whether stock market investors react differently to the announcements of sukuk and conventional bond issues. We find that the stock market is neutral to announcements of conventional bond issues, but it reacts negatively to announcements of sukuk issues. We attribute this finding to the excess demand for Islamic investment certificates and to an adverse selection mechanism that favors sukuk issuance by lower-quality debtor companies.     

Are Malaysian Investors Rational?

This paper examines the investment practices of Malaysian institutional investors during the bullish and bearish periods. The factors and forces that drive the Malaysian stock market are also identified. The investors used a lot of information within and outside the firm before making any stock selection. The analysis of fundamentals appears to be the most popular method for share appraisal. The survey findings demonstrated that Malaysian investors appeared to be rational and prudent in making financial decisions.     

Pro-cyclical effect of sovereign rating changes on stock returns: a fact or factoid?

This article examines the effect of changes in sovereign credit ratings and their outlook on the stock market returns of European countries at different phases of business cycle. Using standard four-factor model, it records a significant average marginal effect of credit rating announcements on stock market returns. Both magnitude and significance of the effect vary with business cycle and across announcement types. However, we do not find evidence of pro-cyclical effect of sovereign rating and outlook changes on stock returns. Our results show that stock markets react more negatively to rating downgrades in recovery phases and more positively to rating upgrades in contractionary period. Both results are statistically significant and robust to various sensitivity tests.     

主动性投资视角下的权证市场行为——来自包钢蝶式权证分时数据的经验证据

本文基于主动性投资视角,构建权证价格波动模型,并根据影响权证价格的两个因素,对权证市场的行为特征进行刻画。根据理论分析框架,以包钢蝶式权证存续期内的价格为样本,对我国权证市场的行为进行了实证分析。结果表明,市场在经历了一段较浓的投机过程之后,尽管总体表现出一定程度的理性与稳定,但在权证存续期的不同阶段,权证行情会发生多空转变。     

Investment horizons,cash flow news,and the profitability of momentum and reversal strategies in the Chinese stock market

This study investigates the profitability of momentum and reversal strategies of different investment horizons in the Chinese stock market. The findings indicate that momentum strategies are profitable for investment horizons less than one week. For longer investment horizons, reversal strategies are profitable. This result is very different from the US market, where profitable momentum strategies yield to much longer investment horizons. We show that this is because investors in Chinese stock market generally overreact to the company cash flow news while investors in US market underreact to cash flow news.