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High short interest is associated with overvaluation, and the purpose of this paper is to find contradictions to the commonly held “overvaluation hypothesis” when merger and acquisition (M&A) targets are examined. This paper extends the work of Ben-David et al. (2015), who confirm high short interest indicates overvaluation when focused on acquiring firms.

Short interest is examined as a predictor of acquisition likelihood using longitudinal data for US firms from 2003 to 2013. How short interest impacts the premiums paid by acquiring firms is examined with target, acquirer and deal characteristics.

M&A targets have high short interest and short interest increases acquisition likelihood, suggesting undervaluation. Highly shorted firms also experience outsized reductions in share price prior to merger announcements, and the premiums paid are also significantly predicted by short interest levels.

Short selling activity can be motivated for reasons other than overvaluation, and many short positions can be held for long periods before they are closed, leading to high short interest levels for extended periods. Therefore, investors and researchers are cautioned that high short interest levels may exist in stocks that have already declined in price and could be poised for a reversal.

This study adds to the growing body of work indicating that short interest might not be the signal of overvaluation most researchers accept it to be.

The purpose of this paper is to investigate what is denoted as episodes of concentrated short‐selling activity, or consecutive days of abnormal short‐sale activity in a particular stock. The motivation to do so is two fold. First, US regulators and regulators in other countries have restricted short selling in order to protect the integrity of markets. Second, there is some conflicting academic research determining whether short sellers are manipulative in nature.

After defining these episodes by concentrated short selling, the paper examines returns before and after to determine whether these episodes target struggling stocks and whether these episodes predict negative returns.

Contrary to the argument that episodes of concentrated shorting activity target struggling stocks, it is found that these episodes follow periods of positive returns. Further, it is found that abnormal volatility and high trading volume also predict the occurrence of these episodes. These results suggest that concentrated shorting occurs in stocks that are increasing in price during periods of heterogeneity among investors expectations (Berkman et al.). It is also found that short sellers during bear raids are able to predict when prices reverse as returns become negative the day after the last day of the raid. Combined, the results suggest that bear raids by short sellers are important for the efficiency of markets.

The results from this study have important regulatory implications as well as implications regarding the informational efficiency of stock prices.

The purpose of our study is to explore the “idiosyncratic volatility puzzle” in Chinese stock market from the perspective of investors' heterogeneous beliefs. To delve into the relationship between idiosyncratic volatility and investors' heterogeneous beliefs, and uncover the ability of heterogeneous beliefs, as well as to explain the “idiosyncratic volatility puzzle”, we construct our study as follows.

Our study adopts the unexpected trading volume as proxies of heterogeneity, the residual of Fama–French three-factor model as proxies of idiosyncratic volatility. Portfolio strategies and Fama–MacBeth regression are used to investigate the relationship between the two proxies and stock returns in Chinese A-share market.

Investors' heterogeneous beliefs, as an intermediary variable, are positively correlated with idiosyncratic volatility. Meanwhile, it could better demonstrate the negative correlation between the idiosyncratic volatility and future stock returns. It is one of the economic mechanisms linking idiosyncratic volatility to subsequent stock returns, which can account for 11.28% of the puzzle.

The findings indicate that idiosyncratic volatility is significantly and positively correlated with heterogeneous beliefs and that heterogeneous beliefs are effective intervening variables to explain the “idiosyncratic volatility puzzle”.

Although short selling has been legalized in China for nearly 10 years, due to the existence of short-sale constraints, its impact on corporate governance of listed companies remains unclear. This paper aims to examine the impact of short-sale refinancing on earnings quality after the short-selling constraints have been released. The authors further explore whether this impact is subject to the nature of property rights and shareholding structures.

This study is based on a sample of A-share firms in China for the period 2014–2016. The authors use earnings response coefficients (ERC) as a proxy for earnings quality. To empirically examine this issue, a matching sample is generated by using propensity score matching method (PSM) to reduce sample selection bias.

This study provides evidence that deregulation of short selling has positive external effect on corporate governance. The results indicate that the potential short-selling opportunities can effectively suppress earnings manipulation and improve earnings quality. However, the impact of short selling on earnings quality varies for companies with different nature of property rights and shareholding structure.

To the best of the authors’ knowledge, this is the first study to investigate the relationship between short selling and earnings quality in the unique setting of short-sale refinancing. This study provides new evidence on the impact of short selling at the micro level and calls for further deregulation of short selling. In addition, this study contributes to existing studies on short-sale refinancing by examining an emerging market.

To analyze the evolution of market manipulation and fraud by short-sellers and online bloggers and mechanisms available for addressing and remediating the damage caused by such fraud, including recent activity by the US Securities and Exchange Commission (the “SEC” or “Commission”).

This article discusses the development of a modern market manipulation and fraud scheme – the “short and distort” – including a review of potential claims by the targeted companies and anticipated impediments to asserting such claims.It further examines the need for regulation and the possibility that the SEC has opened the door for civil claims for this type of fraud.

Companies wrongfully targeted by illegitimate short-sellers may pursue claims for securities violations, defamation, business interference, securities fraud and extortion, among other claims.However, each of these claims has had, and still has, both business and legal challenges, as the short-seller’s initial defense tends to be to attempt to prove the truth of their statements to the market or establish those statements as legitimate opinion.The SEC has made the pursuit easier but there is still a long way to go.

This article contains valuable information about recent SEC enforcement activity and practical guidance from experienced securities lawyers.

The purpose of this paper is to review the literature that measures the concept of firms' information environment (IE) with focus on the validity of proxies used to measure IE.

The paper reviews the IE literature using theoretically based categories and analyzes the contextual meaning and use of IE proxies. The review is based on a selection of 284 research articles from 51 journals between 2000 and 2018. A total of 37 different proxy measures of IE are found and analyzed with respect to causality based on categories and the use of IE variables as dependent, independent and control variables.

The study indicates that the IE measures are heterogeneous and there is a lack of consensus regarding their use. The different conditions used to study IE explain part, but far from all, of this heterogeneity. Furthermore, we find that the use of IE measures is only briefly discussed or motivated among the studies in the sample. These findings suggest a necessary discussion about causality in the use of IE as dependent, independent or control variables.

This study contains new and significant information on IE and IE proxy measures. It provides an extensive literature review and provides a novel typology to analyze IE.

This study examines short selling as one external determinant of corporate tax avoidance. Prior research suggests that short sellers have information advantages over retail investors, and high short-interest levels are a bearish signal of targeted stock prices. As a result, when short-interest levels are high, managers have been shown to take actions to minimize the negative effect of high short interest on firms’ stock prices. Tax-avoidance activities may convey a signal of bad news (i.e., high stock price crash risk). We predict that, when short-interest levels are high, managers possess incentives to reduce firm tax avoidance in order to reduce the associated stock price crash risk. Consistent with this prediction, we find that short interest is negatively associated with subsequent tax-avoidance levels. This effect is incremental to other factors identified by prior research. We conclude that short selling significantly constrains corporate tax avoidance.

A long-time ethical issue in financial accounting is earnings management. Two popular ways that earnings are managed include use of accruals (Kothari et al., 2016) and real activities management (RM). This study examines the association between RM and short selling and an association between short sellers and RM behavior related to earnings management. Instead of using accruals, RM is accomplished by timing investment or financing decisions and thereby alter reported earnings. Our results show that short sellers avoid targeting firms with a high level of RM, but this only holds for those firms that just meet analysts’ forecasts. This result suggests that short sellers interpret RM as a signal used by companies to convey their “good news” and confidence in their future performance. On the other hand, the authors document that heavily shorted firms engage in a lower amount of RM, which is consistent with the notion that short selling plays an external disciplinary role in constraining firms’ RM behavior for earnings management. This chapter would be of interest to anyone concerned with earnings management, such as financial market analysts, investors, academic researchers, and, in particular, regulators, who are involved in setting rules on short selling.

The purpose of this paper is to empirically examine whether corporate insiders extract information from activity of outsiders, specifically the short sellers.

Using portfolio approach and Fama-MacBeth regressions, this study examines the relation between short interest and subsequent insider trading activities.

The following results are reported. First, there is a strong inverse relation between short selling and subsequent insider trading, which is partially due to common private information and same target firm characteristics. Second, insiders extract information from shorts. This information extraction effect is more pronounced for firms whose insiders have stronger incentives to extract shorts information (insider purchases, higher short sale constraints, and better information environments). Third, during the September 2008 shorting ban, the information extraction affect disappeared among the large banned firms, whose shorting activities were distorted.

The findings contradict the of-cited accusations corporate executives hold against short sellers. Instead, corporate insiders appear to trade in the same direction as suggested by shorting activities.

Among the vocal critics of short sellers are corporate insiders, who allege that short sellers beat down their stock prices. Many corporations even engage in stock repurchases to show confidence that the stock will perform well going forward despite the short sellers’ actions. This paper’s analysis on their personal portfolios suggests the other way around.

By focusing on how corporate insider trading is related to shorts information, this paper sheds new light on whether corporate decisions convey the true information the corporate insiders possess.

The purpose of this paper is to examine the impact of short sale prospect on future income smoothing.

This study examines how short sale prospect impacts future income smoothing. This study follows prior research and uses two measures of income smoothing. One is the correlation between the change in prediscretionary income and the change in discretionary accruals. The other is the variability of earnings relative to the variability of cash flows.

This study finds that short sale prospect has a negative impact on future income smoothing. This finding is robust to use different measures of short sale prospect and income smoothing and to subsample tests. Additional analysis reveals that short sale prospect, by curbing income smoothing, reduces future stock price crash risk.

To the best of the authors’ knowledge, this study is the first to examine the impact of short selling on firms’ subsequent smoothing of reported income. This study contributes to the earnings quality literature by demonstrating the governance role of short selling on future earnings smoothness.