Learning minimum variance discrete hedging directly from the market

Option hedging is a critical risk management problem in finance. In the Black–Scholes model, it has been recognized that computing a hedging position from the sensitivity of the calibrated model option value function is inadequate in minimizing variance of the option hedge risk, as it fails to capture the model parameter dependence on the underlying price (see e.g. Coleman et al., J. Risk, 2001, 5(6), 63–89; Hull and White, J. Bank. Finance, 2017, 82, 180–190). In this paper, we demonstrate that this issue can exist generally when determining hedging position from the sensitivity of the option function, either calibrated from a parametric model from current option prices or estimated nonparametricaly from historical option prices. Consequently, the sensitivity of the estimated model option function typically does not minimize variance of the hedge risk, even instantaneously. We propose a data-driven approach to directly learn a hedging function from the market data by minimizing variance of the local hedge risk. Using the S&P 500 index daily option data for more than a decade ending in August 2015, we show that the proposed method outperforms the parametric minimum variance hedging method proposed in Hull and White [J. Bank. Finance, 2017, 82, 180–190], as well as minimum variance hedging corrective techniques based on stochastic volatility or local volatility models. Furthermore, we show that the proposed approach achieves significant gain over the implied BS delta hedging for weekly and monthly hedging.     

From standard to evolutionary finance: a literature survey

Management Review Quarterly - The traditional financial paradigm seeks to understand financial markets by using models in which markets are perfect, which includes agents who are...     

The contingency theory of corporate reporting: Some empirical evidence

This research explores the proposition that certain disclosure and measurment practices in corporate reporting are contingent upon environmental uncertainty, technology and organisation size. The findings show that while the disclosure of forecast information is associated with environmental homogeneity, certain measurement practices are primarily influenced by company size. The results cast doubt on the general applicability of Watts and Zimmerman's (Accounting Review, January 1978, pp. 112–133) theory, and may have a number of implications for the setting of Accounting Standards.     

Developing an entrepreneurial mindset in supply chain managers: Exposing a powerful potential

Entrepreneurship and supply chain management (SCM), respectively, have enjoyed meteoric rises in business practice and scholarly attention over the past three decades. Further, each of the two disciplines has much to offer the other. Yet, we have not witnessed sustained, meaningful integration of principles, practices, and influences despite powerful potential. This paper explores this potential by featuring prospects for entrepreneurship to influence SCM, and vice versa, bringing an entrepreneurial mindset to SCM and supply chain orientation (SCO) to entrepreneurial activities. In particular, we illustrate a validated assessment and diagnostic tool, the Corporate Entrepreneurship Assessment Instrument (CEAI), adapted for supply chain managers with the intent of instilling corporate entrepreneurial activity among supply chain professionals. Granted, supply chain managers are typically tasked with meeting expectations toward customer service effectiveness, efficiency, asset utilization, and safety. Yet, we believe that forming an organizational environment conducive to entrepreneurial thinking could be extremely valuable in the supply chain realm, enhancing capabilities like agility, plasticity, and responsiveness such that innovation and business growth are achieved alongside traditional SCM expectations. Further, we feature several avenues for future research at the interface of entrepreneurship and SCM.     

Market Conditions and Housing Choices: A Comparison of Homeownership Across Three Decades

This article uses information on out‐of‐pocket housing cost and house price appreciation along with the geo‐coded version of the Panel Study of Income Dynamics to consider the differences in the impact of these and other variables on the tenure choices of sample households across three time periods, the 1970s, the 1980s and the 1990s. Specifically, an extended continuous time probability model is used to examine households' transitions from renting to owning and subsequent possible transitions either back to rental tenure or to another owned home during our three observation periods. Coefficient estimates show that financial variables such as house price appreciation and out‐of‐pocket housing cost play an important role in determining all the transitions. In addition, the analysis demonstrates the interesting result that the cumulative likelihoods of homeownership derived from the model are consistently lower than the probabilities of an initial transition to homeownership from rental tenure during the observation period. Finally, the magnitude and timing of the impact on homeownership of a policy experiment that eliminates the mortgage interest deduction are shown to differ substantially across the three decades.     

Cross-national adoption of private food quality standards

Retailer initiated food quality standards are important elements to market food and agricultural products. However, farmers’ certification proceeds at an unequal speed worldwide with some countries representing a large number of certified producers and others representing very few, if any. This study aims at analysing the adoption of two private food standards, BRC Food Technical Standard and GlobalGAP, at an aggregated cross-country level using data of 2007. Negative binomial models are applied to quantify the determinants of standards’ spread at an aggregated level. The results of the econometric analysis reveal some (potential) barriers for farms and firms in developing countries to access this type of organisational innovation. Certificates of both standards seem to be issued more likely in countries with established trade relations with Germany, the Netherlands and the United Kingdom, home countries of the standards. Furthermore, larger countries and countries with better institutional quality host more certified firms. Finally, a country’s level of economic development displays a clear non-monotonic relationship to the number of certified enterprises. Although no evidence for a general exclusion of developing countries can be found, the main implication of this paper is that third-party certification for export purposes seems to reinforce already existing trade relations, potentially hampering new entrants.     

Supplier integration in new product development: Computer mediated communication,knowledge exchange and buyer performance

In new product development (NPD), the buyer–supplier relationship is changing. Suppliers are becoming an integral part of the design team. This study investigates the effectiveness of computer-mediated and face-to-face communication channels on knowledge exchange between buyer and supplier firms, and ultimately buyer NPD and market performance. Open innovation literature and media richness theory are used to develop hypotheses which are then empirically tested using data collected from 157 R&D project managers from U.S. manufacturing firms. To date, empirical studies on the link between supplier integration and buyer performance show conflicting results. Structural equation modeling found a significant positive link between knowledge exchange and NPD performance, measured both in terms of effectiveness and efficiency, and a significant positive link between effective and efficient NPD and market performance. A surprising finding is that contrary to media richness theory, email can perform like face-to-face communication transmitting rich information and having a positive relationship to knowledge exchange between buyer and supplier. It was also found that with face-to-face communication, knowledge exchange fully mediates the relationship with effective NPD while with email communication knowledge exchange fully mediates the relationship with efficient NPD. Video conferencing was found to have no significant effect on knowledge exchange and the effect of web-based tools was significant and negative. The implications of these findings in theory and practice are discussed.