Robust anomalies? A close look at accrual‐based trading strategy returns

The last 40 years have seen an extensive literature documenting so‐called anomalies in major capital markets. Evidence of ‘abnormal’ returns associated with trading strategies based on readily observable phenomena such as accounting‐based data involves experimental design choices that can be expected to influence the results. We show how evidence of an accrual anomaly in Australia is sensitive to research design specifications such as the choice of proxy for total accruals; the definition of abnormal returns (i.e. the return generating model); the impact of data trimming as a response to exceptionally large returns; and the choice between value and equal weighting of returns. We show that research design choices do matter and help reconcile conflicting prior evidence of any accrual anomaly in Australia. More broadly, our results suggest the need for caution in drawing inferences from trading strategy tests which claim to identify anomalies.     

Costly Information Disclosure in Oligopoly

We examine the effect of competition on the incentive of firms to disclose quality to consumers before trade when information disclosure is not costless. We demonstrate that no firm will disclose information in the limit, no matter how small the disclosure cost is; that is, the market outcome converges to complete concealment of information as the number of competing firms becomes larger. Nonetheless, it can be shown that under a mild condition, the equilibrium amount of information disclosure is socially excessive for any number of firms, so discouraging information disclosure by levying a tax may increase social welfare.     

Changes in analysts’ stock recommendations following regulatory action against their brokerage

Review of Accounting Studies - Despite the importance of sell-side analysts in the capital markets, we know little about the effectiveness of routine monitoring of the sell-side industry. We...     

What moves the gold market?

In this article, we provide a detailed characterization of the intraday return volatility in gold futures contracts traded on the COMEX division of the New York Mercantile Exchange. The approach allows the study of intraday patterns, interday ARCH effects, and announcement effects in a coherent framework. We show that the intraday patterns exert a profound impact on the dynamics of return volatility. Among the 23 U.S. macroeconomic announcements, we identify employment reports, gross domestic product, consumer price index, and personal income as having the greatest impact. Finally, by appropriately filtering out the intraday patterns, we find that the high‐frequency returns reveal long‐memory volatility dependencies in the gold market, which have important implications on the pricing of long‐term gold options and the determination of optimal hedge ratios. © 2001 John Wiley & Sons, Inc. Jrl Fut Mark 21:257–278, 2001     

金融危机下的风险管理

2008年以来,全世界都处于经济危机的漩涡之中,风险管理的缺失被认为是其中原因之一.一直以来,风险管理主要侧重于市场、信用和营运风险.对于银行机构来说,这些风险实际上已经在巴塞尔新协议中作了规范,而且都单独对这些风险进行管理和应对.     

Business and regulators partnerships: Government transformational leadership for constructive conflict management

Regulations are often thought to be impediments to collaboration between governments and businesses; however, governments and businesses are increasingly forming partnerships to help them negotiate regulation issues and more broadly work together. This study argues that governments, by exercising transformational leadership, lay the foundation for the cooperative approach, in contrast to the competitive and avoiding approaches, to conflict management that in turn results in effective partnerships. Findings from 146 pairs of government regulators and business support the hypothesis, though the evidence for the ineffectiveness of avoiding conflict was not statistically significant. Specifically, structural equation analysis results support the model that transformational leadership fosters cooperative approach to conflict and reduces competitive conflict management that in turn result in respectful, effective partnerships that develop industries.