The incremental value of a futures hedge using realized volatility

A number of prior studies have developed a variety of multivariate volatility models to describe the joint distribution of spot and futures, and have applied the results to form the optimal futures hedge. In this study, the authors propose a new class of multivariate volatility models encompassing realized volatility (RV) estimates to estimate the risk‐minimizing hedge ratio, and compare the hedging performance of the proposed models with those generated by return‐based models. In an out‐of‐sample context with a daily rebalancing approach, based on an extensive set of statistical and economic performance measures, the empirical results show that improvement can be substantial when switching from daily to intraday. This essentially comes from the advantage that the intraday‐based RV potentially can provide more accurate daily covariance matrix estimates than RV utilizing daily prices. Finally, this study also analyzes the effect of hedge horizon on hedge ratio and hedging effectiveness for both the in‐sample and the out‐of‐sample data. © 2009 Wiley Periodicals, Inc. Jrl Fut Mark 30:874–896, 2010     

A new simple square root option pricing model

This study derives a simple square root option pricing model using a general equilibrium approach in an economy where the representative agent has a generalized logarithmic utility function. Our option pricing formulae, like the Black–Scholes model, do not depend on the preference parameters of the utility function of the representative agent. Although the Black–Scholes model introduces limited liability in asset prices by assuming that the logarithm of the stock price has a normal distribution, our basic square root option pricing model introduces limited liability by assuming that the square root of the stock price has a normal distribution. The empirical tests on the S&P 500 index options market show that our model has smaller fitting errors than the Black–Scholes model, and that it generates volatility skews with similar shapes to those observed in the marketplace. © 2010 Wiley Periodicals, Inc. Jrl Fut Mark     

Small and Medium‐Sized Enterprises' Collaborative Buyer–Supplier Relationships: Boundary Spanning Individual Perspectives

Boundary‐spanning individuals (BSIs) play a critical role in supply chain management, especially in small and medium‐sized enterprises (SMEs) where interactions with buyers and suppliers can depend heavily on just a few individuals. This study, utilizing data from Korean manufacturing‐sector SMEs, explores whether cooperative social value orientations of SMEs' BSIs influence the effects of collaborative buyer‐supplier initiatives. The results suggested that the performance implication of decision‐sharing initiative increases when BSIs have a high level of cooperative social value orientation. However, it also negatively moderates the relationship between risk/benefit sharing (involving financial losses or gains) and performance suggesting possible negative side effects. However, we found that such orientation also negatively moderates the relationship between risk/benefit sharing (involving direct financial losses or gains) and relationship performance suggesting possible negative side effects.     

The Doctrine of the Mean: Workplace Relationships and Turnover Intention

The present study examines the curvilinear relationships between LMX/TMX and team members' turnover intention simultaneously. That is, members with high LMX, TMX, or both are more likely to have turnover intention. Hypotheses were tested with a sample of 452 nurses, and we adopted the response surface methodology and polynomial regression to test our theoretical model. The hierarchical regression analysis showed that TMX has a U‐shaped relationship with turnover intention but not with LMX. In addition, the results indicate that both the congruence and incongruence of LMX and TMX result in higher turnover intention, but moderate levels of LMX and TMX have the lowest turnover intention. Strengths, limitations, practical implications, and directions for future research are discussed. Copyright © 2018 ASAC. Published by John Wiley & Sons, Ltd.     

Does Interindustry and Intraindustry Information Help Predict Financial Distress?

This study investigates whether and how the accounting ratios of peer firms within the same industry (the industry peers) or firms within the industry of their customers (the downstream peers) help improve the predictability of sample firm financial distress. We document that the Z‐score factors of the companies with high correlation in stock returns help predict financial distress. The results show that accounting‐based ratios of the industry peers and the downstream peers enhance the accuracy of early warnings of financial distress, especially when prior returns of peer firms are highly correlated with the sample firm.     

An Exploratory Study of Regulatory Failure in the Australian Home Mortgage Market

Regulators have long been interested in protecting consumers borrowing for a home as it is likely the single greatest financial obligation they will undertake. In this paper we examine the approach taken in Australia to mandating the disclosure of simple comparison data to reduce the complexity involved in the home loan decision. This article highlights that while the form of the legislated disclosure significantly improves decision accuracy, the failure of the regulator to account for the consumer's purchase behavior and lenders' motivations has undermined its effectiveness. We provide a number of recommendations for how to rectify these failings, principally that regulators need to consider the role of borrower information search and lender motivation as part of any regulatory reform.     

Did foreign exchange holding influence growth performance during the global financial crisis?

In a context of increased foreign exchange reserves holding from emerging and developing countries, this paper investigates the diminishing return of reserves holding assumption over the most severe phase of the global financial crisis (2008Q1–2010Q4). Relying on a Panel Smooth Transition Regression model, we highlight the differential effect of the accumulation of foreign exchange reserves for a set of financial vulnerabilities variables. In a specific manner, although reserves accumulation is effective above a critical threshold to cope with vulnerabilities related to the financial channel, we show that it becomes less effective beyond a certain threshold for domestic bank vulnerabilities. Our results are robust to alternative specifications.     

数字经济背景下在线教育培训机构的营销策略探索——以“星火教育”为例

目前,随着数字经济的快速发展,教育领域面临着向数字化转型的挑战。与此同时,在国家宏观层面的支持下,K12教育(指从幼儿园到高三的基础教育)正朝着很好的方向不断发展,越来越多的人重视教育,对教育的需求不断增强,有大量的机构涌入教育行业。要想脱颖而出并且提高盈利水平,完善和拥有自己的营销策略就必不可少。本文以星火教育公司为例,使用PEST法、波特五力模型对我国K12教育行业的营销模式进行剖析,分析其建构模式、员工管理、企业文化等。通过STP分析法确定公司的市场细分、市场定位和目标市场的选择,对提升竞争力改进策略提出建议。     

A Moral Cleansing Process: How and When Does Unethical Pro-organizational Behavior Increase Prohibitive and Promotive Voice

Journal of Business Ethics - In this study, we draw on moral cleansing theory to investigate the consequence of unethical pro-organizational behavior (UPB) from the perspective of the actors....     

WTO框架下创建国际投资协定的可行性研究

现行的国际投资协议都存在着一些弊端,不足以解决全部的投资问题。客观上,需要建立统一的国际投资协定,选择该协定的制定场所成为首要问题。本文将分析在WTO框架下建立国际投资协定的必要性和可行性,说明WTO可以成为制定国际投资协定的重要场所。