The information content of implied volatility: Evidence from Australia

This study develops an implied volatility index for the Australian stock market, termed as the AVX, and assesses its information content. The AVX is constructed using S&P/ASX 200 index options with a constant time‐to‐maturity of three months. It is observed that the AVX has a significant negative and asymmetric relationship with S&P/ASX 200 returns. When evaluating the forecasting power of the AVX for future stock market volatility, it is found that the AVX contains important information both in‐sample and out‐of‐sample. In‐sample, the AVX significantly improves the fit of a GJR‐GARCH(1, 1) model. Out‐of‐sample, the AVX significantly outperforms the RiskMetrics approach and the GJR‐GARCH(1, 1) model, with its highest forecasting power at the one‐month forecasting horizon. © 2009 Wiley Periodicals, Inc. Jrl Fut Mark 30:134–155, 2010     

On the advantages of economically designed the Hotelling’s T2 control chart with variable sample sizes and sampling intervals

Faraz and Parsian (Statistical Paper, 47: 569–593, 2006) have shown that the double warning lines (DWL) scheme detects process shifts more quickly than the other variable ratio sampling schemes such as variable sample sizes (VSS), variable sampling intervals (VSI) and variable sample sizes and sampling intervals (VSSVSI). In this paper, the DWLT²control chart for monitoring the process mean vector is economically designed. The cost model proposed by Costa and Rahim (Journal of Applied Statistics, 28: 875–885, 2001) is used here and is minimized through a genetic algorithm (GA) approach. Then the effects of the model parameters on the chart parameters and resulting operating loss is studied and finally a comparison between all possible variable ratio sampling (VRS) schemes are made to choose the best option economically.     

NONNESTED PROCEDURES IN ECONOMETRIC TESTS OF ASSET PRICING THEORIES

In this paper nonnested tests are used to contrast the performance of the capital asset pricing (CAPM) and consumption capital asset pricing (CCAPM) theories in describing the U.S. stock market. The procedures employed include the N‐test, the NT‐test, the W‐test, the J‐test, and the Encompassing test. The tests are carried out using data on firms as well as portfolios based on beta, capitalization, and Standard Industrial Classification codes. The findings indicate that although during 1973–82 the CAPM dominates the CCAPM, during 1978–87 the results are mixed, and during 1983–92 the CCAPM dominates. The finding in favor of the CCAPM in 1983–92 conflicts with much of the existing literature, which favors the CAPM.     

Fuzzy Control Chart A Better Alternative for Shewhart Average Chart

This paper through a real illustrative example and a power test shows that designing a fuzzy control chart for process average of a continuous (variable) quality characteristic with a warning line is a better alternative to Shewhart chart in many respects, like providing better neural view to inspectors, offering different strategic options for company to choose, detecting the desire shifts more quickly, and more sensibility to small shifts without any complexity augmentation to the chart.     

Case Study: Model for Economic Lifetime of Drilling Machines in the Swedish Mining Industry

The purpose of this article is to develop a practical economic replacement decision model to identify the economic lifetime of a mining drilling machine. A data-driven optimization model was developed for operating and maintenance costs, purchase price, and machine resale value. Equivalent present value of these costs by using discount rate was considered. The proposed model shows that the absolute optimal replacement time (ORT) of a drilling machine used in one underground mine in Sweden is 115 months. Sensitivity and regression analysis show that the maintenance cost has the largest impact on the ORT of this machine. The proposed decision-making model is applicable and useful and can be implemented within the mining industry.     

World pandemic uncertainty and German stock market: evidence from Markov regime-switching and Fourier based approaches

Quality & Quantity - This study aims to examine the impact of the world pandemic uncertainty index on the German stock market index (DAX index) for the 1996Q1 to 2020Q3 period while controlling...     

The Effect of Perceived Corporate Social Responsibility and Sustainable Human Resources on Employee Engagement with the Moderating Role of the Employer Brand

Employee Responsibilities and Rights Journal - Employee Engagement (EE) is an important aspect of human resources management, which is instrumental in the financial success of an organization....     

Inverse data envelopment analysis without convexity: double frontiers

Decisions in Economics and Finance - In this research, inverse data envelopment analysis (IDEA) approaches are proposed to measure inputs changes for output perturbations made while the convexity...