The information content of implied volatilities and model-free volatility expectations: Evidence from options written on individual stocks

We measure the volatility information content of stock options for individual firms using option prices for 149 US firms and the S&P 100 index. We use ARCH and regression models to compare volatility forecasts defined by historical stock returns, at-the-money implied volatilities and model-free volatility expectations for every firm. For 1-day-ahead estimation, a historical ARCH model outperforms both of the volatility estimates extracted from option prices for 36% of the firms, but the option forecasts are nearly always more informative for those firms that have the more actively traded options. When the prediction horizon extends until the expiry date of the options, the option forecasts are more informative than the historical volatility for 85% of the firms. However, at-the-money implied volatilities generally outperform the model-free volatility expectations.     

Time Scales,Wavelet Realized Volatility and Jump Variation: An Empirical Investigation for India

Journal of Quantitative Economics - In this paper we empirically implement concept of wavelet realized volatility with recent advances in wavelet shrinkage literature and try to provide robust...     

Applying Tax Policy Models in Country Economic Work: Bangladesh, China, and India

Three examples from the World Bank's country economic work showhow models can complement general principles in guiding thedesign of a tax reform package. The Bangladesh model highlightsthe sensitivity of judgments about desirable tax bases to assumptionsabout the labor market and substitutability in production. TheChina model quantifies the losses from recommending a singlerate value added tax when prices are controlled and public capitalis freely provided to state enterprises. The India model showswhat fiscal adjustment is consistent with tariff reductionsundertaken to promote an outward-oriented development strategy.Most of the costs of constructing tax policy models are relatedto the need to establish a consistent data set and to calibratethe model in a way that allows its behavior to be consistentwith what good economic analysis would lead one to expect.     

The effects on stressful organizational conditions on salesperson work motivation

This paper examines how organizational stress may contribute to intrinsic and extrinsic dimensions of salesperson work motivation. Hypotheses generated on the basis of sales management and organizational stress literature are tested using data gathered from an insurance sales population. Results indicate that excessive role stress may produce a significant adverse impact on salespersons' intrinsic and extrinsic work motivation. Research findings are discussed from a managerial perspective. The author expresses his thanks to Thomas R. Wotruba of San Diego State University for his helpful comments on an earlier draft of this paper.     

Compound gamma,beta and F distributions

Summary In this paper a compound gamma distribution has been derived by compounding a gamma distribution with another gamma distribution. The resulting compound gamma distribution has been reduced to the Beta distributions of the first kind and the second kind and to theF distribution by suitable transformations. This includes theLomax distribution as a special case which enjoys a useful property. Moment estimators for two of its parameters are explicitly obtained, which tend to a bivariate normal distribution. The paper contains expressions for a bivariate probability density function, its conditional expectation, conditional variance and the product moment correlation coefficient. Finally, all the parameters of the compound gamma distribution are explicitly expressed in terms of the functions of the moments of the functions of random variables in two different ways. This note is based on a technical report prepared by the author while he was with the Procter and Gamble Company.     

Canadian business perspective on nafta

This article presents some of the major criticisms concerning Mexico's entry into the NAFTA. Then it addresses these criticisms from the Canadian business executives’ point of view using data gathered from those currently doing business and not currently doing business in Mexico. The major concerns, costs, and benefits to Canadian firms have been identified. Candid comments from the business executives are contrasted with those views frequently portrayed in the popular press.     

A Comparative Analysis of the Use of Corporate Advertising in the United States and Japan

This article outlines one possible approach that companies can use to identify candidate countries for standardized international advertising campaigns. By clustering countries based on their similarity economically, culturally, and in their media availability and usage, marketers can identify those in which similar campaigns may be successful. In this paper, 40 countries were clustered into six groups within each of which standardization could be attempted. Discriminant analysis provided validation for the appropriateness of this six cluster solution. The implications of these results are discussed and directions for future research based on this approach are suggested.     

Occupational Structure and Incidence of Poverty in Indian Towns of Different Sizes

This paper investigates the incidence of poverty in Indian towns and cities of various sizes of population. It also tests the hypothesis that larger towns and cities, because of their size, are capable of supporting more complex economic activities, improving labor productivity, and hence lowering the incidence of poverty. In particular, similar levels of education, ceteris paribus, have a larger impact in bigger conurbations.