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51.
On September 23, 2002, facing a regulatory mandate issued by the Securities and Exchange Commission, Island teminated the position of the Nasdaq 100 Index Tracking Stock (QQQ) on its book. While the market volume remained almost the same, Island's market share in the QQQ fell significantly. However, Island still dominates other trading centers in the price discovery process and volatility spillovers. The spreads on most trading centers became narrower after Island removed its quotes from the public view. The overall results suggest that the decrease in market transparency does not compromise market liquidity. Informed traders who provide price discovery in the QQQ are willing to sacrifice potential price improvements for the fast speed and reliable execution that Island offers, and are able to trade in the absence of displayed quotes. 相似文献
52.
This article examines the performance of various hedge ratios estimated from different econometric models: The FIEC model is introduced as a new model for estimating the hedge ratio. Utilized in this study are NSA futures data, along with the ARFIMA-GARCH approach, the EC model, and the VAR model. Our analysis identifies the prevalence of a fractional cointegration relationship. The effects of incorporating such a relationship into futures hedging are investigated, as is the relative performance of various models with respect to different hedge horizons. Findings include: (i) Incorporation of conditional heteroskedasticity improves hedging performance; (ii) the hedge ratio of the EC model is consistently larger than that of the FIEC model, with the EC providing better post-sample hedging performance in the return–risk context; (iii) the EC hedging strategy (for longer hedge horizons of ten days or more) incorporating conditional heteroskedasticty is the dominant strategy; (iv) incorporating the fractional cointegration relationship does not improve the hedging performance over the EC model; (v) the conventional regression method provides the worst hedging outcomes for hedge horizons of five days or more. Whether these results (based on the NSA index) can be generalized to other cases is proposed as a topic for further research. © 1999 John Wiley & Sons, Inc. Jrl Fut Mark 19: 457–474, 1999 相似文献
53.
Y. K. Tse 《Journal of Applied Econometrics》1998,13(1):49-55
This paper examines the conditional heteroscedasticity of the yen–dollar exchange rate. A model is constructed by extending the asymmetric power autoregressive conditional heteroscedasticity model to a process that is fractionally integrated. It is found that, unlike the equity markets, the appreciation and depreciation shocks of the yen against the dollar have similar effects on future volatilities. Although the results reject both the stable and the integrated models, our analysis of the response coefficients of the past shocks and the application of the models to the estimation of the capital requirements for trading the currencies show that there are no substantial differences between the fractionally integrated models and the stable models. © 1998 John Wiley & Sons, Ltd. 相似文献
54.
55.
An earnings surprise can be caused by a combination of firm-specific factors and market or industry factors. We hypothesize
that managers have an incentive to time their warnings to occur soon after their industry peers’ warnings to minimize their
apparent responsibility for earnings shortfalls. Using duration analysis, we find that firms accelerate their warnings in
response to peer firms’ warnings. We conduct several tests to control for alternative explanations for warning clustering
(for example, common shocks and information transfer) and conclude that the observed clustering is primarily due to herding.
Our study is one of the first to empirically examine managers’ herding behavior and the first to document clustering of bad news. Moreover, we provide a multi-firm perspective on managers’
disclosure decisions that alerts researchers to consider or control for herding when they examine other determinants of managers’
disclosure decisions. 相似文献
56.
Drawing on social identity theory, this study provides a model explaining the underlying process through which transformational leadership influences creative behavior and organizational citizenship behaviors. Individual differentiation and group identification are proposed as social identity mechanisms reflecting the characteristics of personal and collective identity orientations that underpin the differential effects of transformational leadership behaviors on performance outcomes. The model is tested with data from a sample of 250 front-line employees and their immediate managers working in five banks in the People's Republic of China. Results of hierarchical linear modeling provide support for the model whereby group-focused and individual-focused transformational leadership behaviors exert differential impacts on individual differentiation and group identification. Furthermore, individual differentiation mediates the relationship between individual-focused transformational leadership and creative behavior, whereas group identification mediates the relationships between group-focused transformational leadership and OCBs toward individuals and groups. Implications for theory and practice are discussed and future research directions are outlined. 相似文献
57.
The circular pathway, also called the “cradle-to-cradle” model, is more than just recycling and environmental concerns. It is about a new way of thinking how we could grow without resorting to just expending resources. Its rapid expansion, as a new norm for companies, has characteristics of a Fast Expanding Market, given its exponential growth. In this article, we examine how the circular model is pushing companies and entities to come up with disruptive technology and business models that are based on longevity, renewability, reuse, repair, upgrade, refurbishment, servitization, capacity sharing and dematerialization. © 2015 Wiley Periodicals, Inc. 相似文献
58.
With entrepreneurial and innovation ecosystems appearing in geographic pockets around the world in diverse places and pockets of growth, the call for an entrepreneur‐driven innovation ecosystem (EDIE) in Europe is long overdue. Change remains a constant, and traditional industries and mature markets in Europe have left a vacuum in the path to economic growth. The need for a new model is immediate. If Europe is to find itself providing competitive leadership in the global business environment, a new philosophy is necessary to move forward in the twenty‐first century. This is the thinking behind the imperative for an EDIE in Europe, which is presented in this article as a result of a long established effort to awaken a European response to an increasingly contracting environment. © 2015 Wiley Periodicals, Inc. 相似文献
59.
Tony S. M. Tse 《Asia Pacific Journal of Tourism Research》2013,18(9):989-1008
Does tourism change our lives? The mainstream of tourism psychology research is mostly concerned with tourist motivation, behavior in and satisfaction with destination, and few studies explore how tourism might affect people's perceptions of themselves, home, neighborhood, work, friends, relatives, and life in general. This study seeks insights into the effect and influence of travel and tourism on people, not momentary impact during vacation but longer-term impact in terms of sense of being, direction in life, and well-being. It is found that there are positive changes in the perception of life among Chinese travelers in general and the perception changes among travelers are significantly stronger than the perception changes among the control group of non-travelers. There is clear evidence that travelers feel more positive than non-travelers in their general well-being, attitude toward life, sense of control, and outlook. 相似文献
60.