Against the tide: the commencement of short selling and margin trading in mainland China

China's recent removal of short‐selling and margin trading bans on selected stocks enables testing of the relative effect of margin trading and short selling. We find the prices of the shortable stocks decrease, on average, relative to peer A‐shares and cross‐listed H‐shares, suggesting that short selling dominates margin trading effects. Contrary to the regulators' intention and recent developed market empirical evidence, liquidity declines and bid‐ask spreads increase in these shortable stocks. Consistent with Ausubel (1990), these results imply that uninformed investors avoid the shortable stocks to reduce the risk of trading with informed investors.     

Margin trading,short selling,and bond yield spread

Using a quasi-natural experiment, this study examines the effects of margin trading and short selling on bond yield spread in China. It finds that both margin trading and short selling can reduce bond yield spread. Additionally, it finds that margin trading lowers firms’ debt ratios and increases their credit ratings, which explains the reduced spread. In other words, margin trading can impact investors’ decisions by revealing positive information about a firm. Another finding is that short selling lowers the bond yield spread by decreasing earnings management, suggesting that short selling has an impact on investors’ decisions through its effect on corporate governance. Our results suggest that margin trading transmits positive information and short selling impacts firms’ policies. These results provide support for future regulations of margin trading and short selling.     

Effect of the ban on short selling on market prices and volatility

We examine the effects of the short‐selling ban, imposed by Australian regulators in the wake of the global financial crisis, on the trading of financial stocks. Our findings argue against commonly stated reasons for imposing short‐sale bans. We find no evidence that short‐sale restrictions provide support for stock prices or that they reduce volatility. Moreover, stocks subject to the short‐selling ban suffered a severe degradation in market quality. Controlling for the adverse effects of the financial crisis on markets, we show that short‐selling restrictions increase intraday volatility, reduce trading activity and increase bid–ask spreads.     

Short sales, price pressure, and the stock price response to convertible bond calls

The announcement of a convertible bond call is associated with an average contemporaneous abnormal stock price decline of 1.75% and an ensuing price recovery in the conversion period. A price fall and the subsequent recovery suggest price pressure as the explanation for the announcement effect. However, in general the option to convert is not exercised early and hence, the increase in the number of shares outstanding does not occur at the announcement date. Instead, this paper argues and provides evidence that hedging-induced short selling causes at least part of the short-run price pressure.     

Short Sales Constraints and Momentum in Stock Returns

Abstract:   We show that stock characteristics identified by D'Avolio (2002) provide a reliable index of the mostly unobservable short sales constraints. Specifically, we find that this index is positively related to the level of short interest and to short selling costs implied by the disparity in prices in the options and stock markets, and is negatively related to future returns. Using this index, we show that the magnitude of momentum returns for the period 1984 to 2001 is positively related to short sales constraints, and loser stocks rather than winner stocks drive this result. We conclude that short sales constraints are important in preventing arbitrage of momentum in stock returns.     

卖空与创新:A股公司融券试点的证据

本文依托中国A股市场2010年开始实施的融券试点,在通过多时点双重差分和倾向得分匹配等计量方法控制内生性的基础上,实证检验了卖空对上市公司创新行为的促进作用.结果 表明:(1)加入融券标的后,卖空公司的创新数量和创新质量都有显著提高;(2)对于金融市场欠发达、治理水平较差的公司,这种作用更明显;(3)在使用融券余额作为卖空势力的测度并用ETF基金持股比例作为工具变量进一步控制内生性以后,以上结论仍然成立.卖空有助于降低创新企业的信息不对称性和加强对经理人的薪酬激励,进而促进了企业的创新.因此,取消卖空限制将有助于中国企业的创新和资本市场的健康稳定发展.     

Civil war, stock return, and intellectual capital disclosure in Sri Lanka

This study examines the effect of current-period intellectual capital disclosure on earnings and current annual stock return during a civil-war period. Using the top 30 firms by market capitalization listed on Colombo Stock Exchange over six years (from 1998 to 2003), this study finds that firms do not include the current-period intellectual capital disclosure in the current stock return, and the increase in the current-period intellectual capital disclosure activity has no influence on earnings included in the current stock return. Future accounting-based earnings, if stated in the current period, by contrast are included in the current stock return. The findings provide insights into the intellectual capital disclosure practice and its influence on stock return in a civil-war environment.     

Commonality in returns,order flows,and liquidity in the Greek stock market

Using a unique high-frequency data-set on a comprehensive sample of Greek blue-chip stocks, spanning from September 2003 through March 2006, this note assesses the extent and role of commonality in returns, order flows (OFs), and liquidity. It also formally models aggregate equity returns in terms of aggregate equity OF, in an effort to clarify OF's importance in explaining returns for the Athens Exchange market. Almost a quarter of the daily returns in the FTSE/ATHEX20 index is explained by aggregate own OF. In a second step, using principal components and canonical correlation analyses, we document substantial common movements in returns, OFs, and liquidity, both on a market-wide basis and on an individual security basis. These results emphasize that asset pricing and liquidity cannot be analyzed in isolation from each other.     

World market risk,country-specific risk and expected returns in international stock markets

This paper determines whether the world market risk, country-specific total risk, and country-specific idiosyncratic risk are priced in an international capital asset pricing model (ICAPM). Portfolio-level analyses, country-level cross-sectional regressions, stacked time-series, and pooled panel regressions indicate that the world market risk is not, but country-specific total and idiosyncratic risks are significantly priced in an ICAPM framework with partial integration. This result is robust to different methods for estimating risk measures, different investment horizons, and after controlling for the countries’ aggregate dividend yield, earnings-to-price ratios, inflation risk, exchange rate uncertainties, aggregate volatility risk, and past return characteristics. The main findings turn out to be insensitive to the choice of one-factor vs. multifactor models used to estimate systematic and idiosyncratic risk measures.     

The role of managerial risk‐taking in the ‘rise and fall’ of the CDS market

Since the innovation of credit default swaps (CDSs) in 1997, the market for CDSs grew dramatically to $62 trillion in 2007 (ISDA 2010). However, this market declined significantly with the onset of the GFC, prompting the question, ‘What lies behind the phenomenal growth and the eventual collapse of the CDS market?’ Using CDS spread data from 319 bank and non‐bank financial institutions across 33 countries over the period 2001–2010, I provide evidence of the determinants that affect risk‐taking by financial institutions, proxied by CDS spreads, and argue within an agency theoretical framework that managerial risk‐taking contributed to the ‘rise and fall’ of the CDS market.     

Market closure effects on return, volatility, and turnover patterns in the Hong Kong index futures market

This paper examines the market closure effect of the Stock Exchange of Hong Kong (SEHK) on the intraday behaviour of the index futures contract which continues to trade for 5–15 min after the close of the SEHK. The behaviour of the index futures market in Hong Kong is consistent with the contagion model of King and Wadhwani (1990) in that the close of the SEHK leads to an immediate downturn in the return, volatility, and turnover in the index futures market. The long period of nontrading before the morning also leads to a higher morning volatility and turnover.     

隐性行业壁垒、市场集中度与中国保险经纪市场结构演进

对于保险经纪市场结构的研究,传统方法是运用市场集中度和市场壁垒指标,而由于我国正处在经济转型期,市场特点与发达国家有所不同,本文提出了隐性行业壁垒的分析方法。基于2005年~2009年保险经纪市场数据进行的两种不同的实证研究显示,我国保险经纪市场结构的演进趋势有所不同:传统分析方法的结果表明,保险经纪市场的总体特征是垄断性较低、竞争性较强,且呈现出竞争性逐步增强的趋势;隐性行业壁垒方法的结果表明,保险经纪市场中存在有较为明显的垄断性特征,且这种垄断性特征随着时间的变化呈现出增强的趋势,结论的差异值得保险经纪市场的监管者、参与者等利益相关者予以高度重视。     

金融发展、汇率变动与中国省区制造业出口

本文使用中国省区细分行业的数据和一系列反映金融发展的指标,检验了金融发展对于中国省区制造业出口的影响,同时观测了汇率变动对于各省区行业出口绩效的影响。在控制了各省区要素禀赋以及基础设施条件后发现,在金融发展水平高的省份,高融资依赖性的行业具有较高的出口份额。此外,金融发展有利于融资依赖性行业抵御外部汇率冲击带来的负面影响,扩大市场份额。在选取工具变量以及采取IVTobit模型克服模型的内生性后,结果依然稳健。     

Behavior in a simplified stock market: the status quo bias, the disposition effect and the ostrich effect

Previous literature suggests specific behavioral tendencies cause investors to deviate from optimal investing. We investigate three such tendencies in a simplified stock market. Subjects do trade for better stocks, but do not reach their maximum potential earnings, most commonly because they choose to ignore information and continue to hold on to a stock regardless of its performance. The results support the predictions of the status quo bias, but not the ostrich effect or the disposition effect. This research is an extension of Brown’s undergraduate honors thesis at Ohio State University. Financial support was provided by the Honor’s College and the Department of Economics at Ohio State University. Kagel’s research was partially supported by grants from the National Science Foundation. We received helpful comments from Hal Arkes, David Cooper and two anonymous referees.     

Risk-based portfolio strategy in emerging stock markets: economic significance from Brazil,Russia, India and China

The purpose of this paper is to examine the conditional volatility and correlation predictability of four emerging stock markets, and address the issue whether investors could exploit this predictability to earn excess returns from the minimum variance portfolio of index component stocks. Inevitably, transaction cost affects the conclusive results. Nevertheless, economic gain exceeding a conservatively high transaction cost could be derived from a number of conditional volatility and correlation models. One dominant model, the shrinkage model, outperforms the market across the countries, cost structures and performance measures. We also document the superiority of averaging methodologies. However, semiparametric modelling falls in a grey area of profitability – sometimes attractive whilst sometimes not attractive.     

Returns to Scale,Market Power,and the Nature of Price Rigidity in New Keynesian Models with Self‐Fulfilling Expectations

Increasing returns to scale and firms' market power are two potential sources of sunspot expectations in neoclassical models. We show that in New Keynesian models, returns to scale and market power can have fundamentally different implications for broad macroeconomic issues, including self‐fulfilling expectations, depending on the nature of price rigidity. Our findings suggest that the design of stabilization monetary policy can depend on precise knowledge about the economy's real and nominal features. Therefore, a clear understanding of the specific economic environment and its relevance to monetary policymaking for ensuring macroeconomic stability can be an integrated part of monetary policy practice.