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Do Female Managers Affect Productivity? Evidence from Zimbabwean Manufacturing Firms

Using a large dataset of Zimbabwean manufacturing firms extracted from the two waves of World Bank Enterprise Surveys of 2011 and 2016, the study investigates the impact of female management on firm's productivity in Zimbabwe's manufacturing firms. The study estimates a modified production function, to incorporate gender dimension, using a random effects estimation model. The results show that the effect of having a female manager on firm productivity varies by geographical location in the case of Zimbabwe. Specifically, the productivity of firms which have a female top manager, and are located in Harare, experience a negative productivity differential as they significantly reduce their productivity gap by 9.9 percent. On the other hand, the study found that having a female top manager in manufacturing firms located in Bulawayo significantly increases productivity by 7.9 percent compared to firms located in the Midlands area. We also find that the effect of a female manager on firm productivity differs by sectors, stressing the need for domestic economic policy to consider these dynamics. Given the importance of location in determining the contribution of a production manager on firm performance, the government may need to implement policies that consider location‐specific factors to enhance productivity of the manufacturing sector of Zimbabwe.     

Why Hurry? The Slow Process of High Growth in Women‐Owned Businesses in a Resource‐Scarce Context

This article critically uncovers how embeddedness within a resource‐scarce context influences high‐growth women’s entrepreneurship. Research suggests that though highly embedded women entrepreneurs can easily access resources and attain legitimacy, resulting in high‐growth businesses, they can also become locked into existing systems that constrain their growth development paths. Using 16 qualitative cases developed in Cameroon, we unpack and resolve this paradox by analyzing how entrepreneurial path creation by women entrepreneurs enables the realization of growth aspirations. Implications for initiatives to support high‐growth women’s entrepreneurship in resource‐scarce contexts are critically examined.     

Under the AEGIS of knowledge-intensive entrepreneurship: employment growth and gender of founders among European firms

An increasing number of theoretical and empirical analyses address the role of innovation as one of the main sources of firm growth. More recently, studies have looked at the role of gender diversity as a possible determinant of innovation and entrepreneurial performance. However, the relationship between gender and employment growth—a dimension of entrepreneurial performance—still remains unexplored to a large degree. This paper contributes to the empirical literature on gender and entrepreneurial performance in several ways. First, it examines the role played by both innovation and gender ownership as determinants of employment growth rates of young, knowledge-intensive entrepreneurial (KIE) firms. Second, it investigates the indirect impact of contributing factors—such as the characteristics of the market, knowledge-based capital, and human capital—on employment growth. And third, it relies on a rich new cross-sectional data set on young, KIE firms across European Union (EU) countries. The data set contains information not only on the gender of the firm’s founders but also on the market environment, business strategy, and innovative and economic performance of firms.     

On the duality principle in option pricing: semimartingale setting

The purpose of this paper is to describe the appropriate mathematical framework for the study of the duality principle in option pricing. We consider models where prices evolve as general exponential semimartingales and provide a complete characterization of the dual process under the dual measure. Particular cases of these models are the ones driven by Brownian motions and by Lévy processes, which have been considered in several papers. Generally speaking, the duality principle states that the calculation of the price of a call option for a model with price process S=e ^H (with respect to the measure P) is equivalent to the calculation of the price of a put option for a suitable dual model S′=e ^H′ (with respect to the dual measure P′). More sophisticated duality results are derived for a broad spectrum of exotic options. The second named author acknowledges the financial support from the Deutsche Forschungsgemeinschaft (DFG, Eb 66/9-2). This research was carried out while the third named author was supported by the Alexander von Humboldt foundation.     

Can Language Predict Bankruptcy? The Explanatory Power of Tone in 10‐K Filings

We examine whether the language used in 10‐K filings reflects a firm's risk of bankruptcy. Our sample contains 424 bankrupt U.S. companies in the period 1994–2015 and we use propensity score matching to find healthy matches. Based on a logit model of failing and vital firms, our findings indicate that firms at risk of bankruptcy use significantly more negative words in their 10‐K filings than comparable vital companies. This relationship holds up until three years prior to the actual bankruptcy filing. With our investigation, we confirm the results from previous accounting and finance research. 10‐K filings contain valuable information beyond the reported financials. Additionally, we show that 10‐Ks filed in the year of a firm's collapse contain an increased number of litigious words relative to healthy businesses. This indicates that the management of failing firms is already dealing with legal issues when reporting financials prior to bankruptcy. Our results suggest that analysts ought to include the presentation of financials in their assessment of bankruptcy risk as it contains explanatory and predictive power beyond the financial ratios.     

Involuntary Unemployment and the Existence of GDP Functions

We develop a simple general equilibrium model of production where, despite the existence of involuntary unemployment, non–equalized job rents are the only distortion. Hence, a standard GDP function exists. Unemployment results from either efficiency wage setting or wage bargaining.     

Risk arbitrage opportunities in petroleum futures spreads

This article investigates the long-term pricing relationship among crude oil, unleaded gasoline, and heating oil futures prices, and finds that these commodities futures prices are cointegrated. The study finds that the spreads between crude oil and its end products are stationary. Furthermore, this article investigates the risk arbitrage opportunities in three types of popularly traded petroleum futures spreads and finds that historically profitable risk arbitrage opportunities existed and were statistically significant. However, one cannot be certain that these opportunities still exist. The research also finds that moving averages are valid test variables for measuring spreads. Statistical and tabular constructions are used to illustrate findings. © 1999 John Wiley & Sons, Inc., Jrl Fut Mark 19: 931–955, 1999