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1.
2.
The Informational Role of Stock and Option Volume 总被引:8,自引:0,他引:8
This article analyzes the intraday interdependence of orderflows and price movements for actively traded NYSE stocks andtheir Chicago Board Options Exchange (CBOE)-traded options.Stock net trade volume (buyer-initiated volume minus seller-initiatedvolume) has strong predictive ability for stock and option quoterevisions, but option net trade volume has no incremental predictiveability. This suggests that informed investors initiate tradesin the stock market but not in the option market. On the otherhand, both stock and option quote revisions have predictiveability for each other. Thus, while information in the stockmarket is contained in both quote revisions and trades, informationin the option market is contained only in quote revisions. 相似文献
3.
It is necessary to reconsider the assumptions upon which the process of implementing compliance with ethical programs rests, in both theoretical and practical terms. These assumptions should hinge on organizational enablers that allow embeddedness of codes of ethics in the web of an organization's processes. This article sets out to describe an approach that will facilitate implementation of codes of ethics in construction organizations and a comprehensive literature survey approach is adopted to achieve this. The paper equally employs the application of the European Foundation for Quality Management (EFQM) model as a tool to stimulate ethical behavior in an organization, with the focus on the enabler criterion of the model. The authors discuss organizational enablers in relation to the implementation of ethical codes. The study demonstrates how ethics can be managed in an organization by proposing a framework to enhance codes of ethics embeddedness in the web of an organization. The paper indicates current research gaps and future opportunities for both academics and practitioners. 相似文献
4.
This paper presents a comprehensive assessment of premiums, reserves and solvency capital requirements (SCRs) for long-term care (LTC) insurance policies using Activities of Daily Living and US data. We compare stand-alone policies, whole life insurance policies with LTC benefit riders (LTC insurance combined with whole life insurance), life care annuities (LTC insurance combined with annuities) and shared LTC insurance in terms of net premium cost and SCRs. Net premiums and best-estimate reserves for base LTC insurance policies are determined using Thiele’s differential equation. Product features such as the elimination period and the maximum benefit period are compared using a simulation-based model. We show how a maximum benefit period can reduce costs and risks for LTC insurance products. SCRs for longevity risk and disability risk are based on the Solvency II standard formula. We quantify the extent to which whole life insurance policies with LTC benefit riders and life care annuities provide lower SCRs than stand-alone LTC insurance policies. 相似文献
5.
Lik Fong 《Applied economics》2013,45(22):2250-2258
In this article, we investigate the impacts of futures and options markets on the volatility of the underlying market. Unlike earlier studies, the focus is on their persistence over time. Tests on the Hang Seng index yield several interesting results that often contrast with previous findings. Empirical results suggest that the quality of new information generated by derivative trading determines the impacts on the spot market volatility. The futures market provides new, material information reducing spot market volatility. The Options market, on the other hand, generates noisy information and distorts price, which is followed by an increase in volatility and a decrease in its sensitivity to price change. While the impact of futures persists, that of options mostly disappears as the market matures. Our conjecture is that the futures market is mainly driven by informed, experienced participants, while the options market attracts new, inexperienced investors. 相似文献
6.
This paper examines the martingale hypothesis for five Asian stock markets using the spectral shape tests of Durlauf (1991). Unlike the variance ratio test employed in previous studies (eg, Panet al, 1991), the spectral shape tests are consistent againstall stationary alternatives to the martingale null.The spectral shape tests were applied to daily and weekly returns on the stock indices of Thailand, Hong Kong, Korea, Malaysia and Taiwan over a period of 17 years. The results show that the martingale null is rejected for most markets. There is some evidence that the rejections may be due to low frequency or long memory influences.The authors are lecturers, Department of Finance and Banking, National University of Singapore. This paper was presented at the Third International Conference on Asian-Pacific Financial Markets, September 9–11, 1993 in Singapore. We have benefited greatly from the comments of Y K Tse and other conference participants. 相似文献
7.
We seek to understand the ever-increasing push towards the international harmonization of accounting standards and particularly the inexorable rise of standards produced by the International Accounting Standards Board (IASB). While the primary justifications for the increasing recognition given to these standards (IFRS) are economic, we question whether the empirical evidence to date has yielded convincing support for these arguments. We therefore offer an alternative explanation for the origin and diffusion of IFRS that incorporates social and political factors. Outsourcing the manufacture of accounting standards to a single private agency appears to be a rational, lower cost option – lowering both economic and political costs for individual states as long as they continue to retain residual decision rights with respect to the adoption of IFRS. However, such outsourcing must also be perceived to be legitimate. IFRS confer institutionalized legitimacy because they possess three characteristics required of a technology for global governance. These are sponsorship by powerful interest groups/regulators, internationality and plasticity. We therefore conclude that the widespread diffusion today of IFRS can at best be only partially explained as an economically rational phenomenon. Rather, the demand for legitimate action in the face of tightly coupled and complex global markets is at least equally important in generating support for IFRS. 相似文献
8.
John C. Liechty Duncan K. H. Fong Eelko K. R. E. Huizingh Arnaud De Bruyn 《Marketing Letters》2008,19(2):141-155
The authors explore situations where consumers supplement their judgments with a measurement of uncertainty about their own
preferences, either implicitly or explicitly, and develop two sets of hierarchical Bayesian conjoint models incorporating
such measurements. The first set of models uses the relative location of a rating to determine the importance or weight given
to the rating, in a regression setting. The second set uses interval judgment as a dependent variable in a regression setting.
After specifying the models, the authors perform a theoretical comparison with a basic Bayesian regression model. They show
that, under different conditions, the proposed models will yield more precise individual-level partworth estimates. Two simulated
data examples and data from a conjoint study are used to illustrate the gains that could be obtained from modeling uncertainty.
In the empirical application, the authors show that model fit improves when ratings for items that respondents do not like are given more weight compared to ratings for items that they do like.
Electronic Supplementary Material The online version of this article (doi:) contains supplementary material, which is available to authorized users.
相似文献
John C. LiechtyEmail: |
9.
The paper reviews the literature on labour markets in the region with special emphasis on the impact of economic growth and structural change on employment and wages. It deals with labour supply trends, employment creation outside agriculture (especially export orientated industrialization and new high-tech industries), labour absorption in agriculture, wage differentials and the functioning of rural and urban labour markets.
The creation of efficient and equitable labour market institutions and labour market flexibility have emerged as dominant issues in the NIEs. In the ASEAN-4, because of concentration of employment in low productivity and low wage jobs and underutilization of labour, the rate of modern sector labour absorption remains the major policy concern. 相似文献
The creation of efficient and equitable labour market institutions and labour market flexibility have emerged as dominant issues in the NIEs. In the ASEAN-4, because of concentration of employment in low productivity and low wage jobs and underutilization of labour, the rate of modern sector labour absorption remains the major policy concern. 相似文献
10.
Joelle H. Y. Fong Olivia S. Mitchell Benedict S. K. Koh 《The Journal of risk and insurance》2011,78(4):961-982
Although annuities are a theoretically appealing way to manage longevity risk, in the real world relatively few consumers purchase them at retirement. To counteract the possibility of retirees outliving their assets, Singapore's Central Provident Fund, a national defined contribution pension scheme, has recently mandated annuitization of workers’ retirement assets. More significantly, the government has entered the insurance market as a public‐sector provider for such annuities. This article evaluates the money's worth of life annuities and discusses the impact of the government mandate and its role as an annuity provider on the insurance market. 相似文献