Assessing stock market dependence and contagion

This paper assesses evidence of the linkages and contagion among important stock markets in Latin America (Brazil, Mexico and Argentina), Europe (UK and Germany), Asia (Japan and Singapore) and the USA from 6 September 1995 to 19 April 2013. To accomplish this task, this paper combines copula modelling with time-varying parameters and pair-copula composition of multiple dependence. The bivariate analyses show an asymmetric dependence between the stock markets as well as contagion. In addition, this work proposes a method to assess the linkages and contagion between two stock markets which takes into account the effects of a third stock market. In applying this method, conditioned on the USA market, most of the evidence of contagion between the Latin American or European markets disappears, but important dependence levels still remain.     

Is gold the best hedge and a safe haven under changing stock market volatility?

We evaluate the role of gold and other precious metals relative to volatility (Volatility Index (VIX)) as a hedge (negatively correlated with stocks) and safe haven (negatively correlated with stocks in extreme stock market declines) using data from the US stock market. Using daily data from November 1995 to November 2010, we find that gold, unlike other precious metals, serves as a hedge and a weak safe haven for US stock market. However, we find that VIX serves as a very strong hedge and a strong safe haven during our sample period. We also find that in periods of extremely low or high volatility, gold does not have a negative correlation with the US stock market. Our results show that VIX is a superior hedging tool and serves as a better safe haven than gold during our sample period. We highlight the practical significance of our results for financial market participants by conducting a portfolio analysis.     

Government Intervention and Investment Comovement: Chinese Evidence

This study examines whether government intervention affects corporate investment comovement, and whether this impact varies across firms with different types of ownership. We use a large Chinese sample to investigate these questions, and perform a regional as well as firm‐level analysis. We show that government intervention is positively and significantly associated with investment comovement. We also find that the impact of government intervention on investment comovement is higher and more significant for state‐owned firms than for domestic private and foreign firms. Finally, we show that investment comovement hinders corporate performance for state‐owned and domestic private firms but not for foreign firms.     

Board Connections and Dividend Policy

We examine the role of firm board connectedness in shaping a firm's dividend policy. We show that firms with well-connected boards not only have a higher likelihood of paying dividends in the pooled sample of both dividend payers and non-payers but also pay more dividends in the sample of dividend payers, compared with those with poorly connected boards. Further analysis reveals that the relation between board connectedness and dividend-paying behaviour tends to be economically stronger in firms pre-identified to have more severe agency conflicts, suggesting that well-connected boards tend to use dividends to mitigate agency problems in these firms. These findings are robust to different measures of board connectedness, different dividend payout measures, alternative estimation methods, and tests that account for endogeneity.     

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.     

Financial globalization and stock market risk

This paper examines stock market volatility measured by either “beta-volatility” or by the standard deviation of stock returns over 1995-2007. In our dynamic panel data framework, after controlling for size, turnover, and real output growth, we find some support to increases in financial integration reducing total stock return volatility for representative emerging markets, with almost no impact for industrial economies. Allowing for feedback effects from stock volatility to stock turnover, we obtain a richer interpretation for the broadening of investor basis hypothesis: more integrated financial markets leads to lower stock volatility, yet these are not so strong as found previously and are not accompanied by more turnover.     

Teaming Up? China,India and Brazil and the Issue of Benefit-Sharing from Genetic Resource Use

ABSTRACT

This article focuses on an area that has not been systematically addressed but is of crucial importance to China, India and Brazil: the global governance of genetic resources. All three are biodiversity-rich and, ever since biotechnology promised to turn DNA into gold, have been significant players in the genetic-resources regime complex. Shortcomings notwithstanding, the establishment of a new access and benefit-sharing regime constitutes a rare instance where emerging countries have succeeded in becoming rule-makers of sorts. We analyse how these three countries have sought to pursue their interests in this area, especially after the extension of national sovereignty over previously ‘free’ genetic resources and the erection of a complex set of rules attempting to regulate access to and benefits from their utilisation from the early 1990s onwards. Despite presenting a generally unified front in international fora, their domestic implementation differs significantly and raises questions about the continuation of a common international position. The article adds to our understanding of emerging countries’ engagement with global governance by focusing on the concrete drivers and domestic processes that have motivated and shaped the agency of China, India and Brazil in this new policy regime.     

Impact of environmental information disclosure and real estate segments on cost of debt: Evidence from the Chinese real estate industry

The novel part of this paper is to examine the individual and joint effects of the real estate segments (RETs) and environmental information disclosure (EID) on the cost of debt (COD) in the real estate industry in China. Building on extant literature, using 1,250 firm‐year observations from 2006 to 2016 and applying both Feasible General Least Squares and Two‐stage Least Squares Instrumental Variable approaches, we provide evidence that the commercial RET leads to an increase in the COD, while EID leads to a decrease in the COD. The joint effects of the RETs and EID on the COD indicate a significantly positive relationship with the COD. This signifies that even with the increased levels of EID in commercial real estate sectors, its COD is higher than for residential real estate sectors. These findings have important policy implications for environmental risk assessments for real estate sectors, their lending institutions and wider stakeholder groups.     

The economic impact of acute coronary syndrome on length of stay: an analysis using the Healthcare Cost and Utilization Project (HCUP) databases

Objective:

To assess the economic impact of initial and repeat hospitalizations associated with acute coronary syndrome (ACS) over 1 year (2009).

Design and methods:

National- and state-level data on length of stay (LOS) and related charges for ACS-associated hospital admissions were assessed using two Healthcare Utilization Project databases. The first, the Nationwide Inpatient Sample (NIS), provided clinical and resource use information from ～8 million hospital stays, representing a 20% stratified sample of ～40 million annual hospital stays in the US in 2009. The second, the State Inpatient Databases, provided 100% of inpatient data from nine states that included both patient age and linked information on multiple patient admissions within the same calendar year. For patients with repeat admissions, the LOS, primary diagnosis, and total charges between the first and subsequent admissions were evaluated. All patients ≥18 years of age with at least one diagnosis of ACS, defined using the International Classification of Diseases, 9th Revision, were included (code 410.xx [except 410.x2], 411.1x and 411.8x). Variables evaluated for each discharge included demographics, cardiovascular events and procedures, LOS, discharge status, and total charges.

Results:

The NIS reported 1,437,735 discharges for ACS in 2009. In this dataset, mean LOS for an initial ACS event was 5.56 days. Patients >65 years of age had the highest numbers of admissions; this group also had the most comorbidities. Approximately 40% of ACS patients with data on repeat visits had more than one admission, >70% of these within 2 months of the primary discharge. Mean charges were $71,336 for the first admission and $53,290 for the second admission.

Conclusion:

Despite a variety of new therapies to prevent ACS, it remains a common condition. Better therapies are called for if the clinical and cost burden of ACS is to be alleviated.     

Human resource differentiation: A theoretical paper integrating co‐workers' perspective and context

This paper conceptualises “human resource (HR) differentiation” as a set of deliberate and differentiating HR practices across individuals within the organisation to address employees' unique work needs and preferences as well as reward them for their input. Despite the importance of HR differentiation, research has mainly focused on the recipients of such practices, overlooking the consequences of HR differentiation from co‐workers' perspective. This is a significant omission because a growing concern suggests that HR differentiation might be a double‐edged sword, as the presumed positive effects might only be confined to employees benefiting from it. Taking a first step, this paper offers a conceptual model that explains how co‐workers of a focal employee, who is entitled to an advantageous outcome through HR differentiation, are likely to react, either positively by showing contentment or negatively by showing anger, with behavioural consequences towards the focal employee and organisation. In so doing, we rely on deontic justice theory and explore contextual conditions at the individual and team level under which co‐workers react. As a result, our model can inspire future research by adopting a broader and more inclusive approach to HR differentiation, underlining the need for caution when implementing HR differentiation in a team setting.