A comparison of pricing and hedging performances of equity derivatives models

This article investigates the pricing/hedging conundrum, i.e. the observation of a mismatch between derivatives models’ pricing and hedging performances, that has so far been under-emphasized as the literature tends to focus on increasingly complicated option pricing models, without adequately addressing hedging performance. Hence, we analyse the ability of the Black–Scholes, Practitioner Black–Scholes, Heston–Nandi and Heston models to Delta-hedge a set of call options on the S&P500 index and Apple stock. We extend earlier studies in that we consider the impact of asset dynamics, apply a stringent payoff replication strategy, look at the impact of moneyness at maturity and test for the robustness to the parameters’ calibration frequency and Delta-Vega hedging. The study shows that adding risk factors to a model, as stochastic volatility, should only be considered in light of the data dynamics. Even then, however, more complicated models generally fare poorly for hedging purposes. Hence, a better fit of a model to option prices is not a good indicator of its hedging performance, and so of its ability to describe the underlying dynamics. This can be understood for reasons of over-fitting. Those findings hint to a potentially appealing hedging-based calibration of models’ parameters, rather than the standard pricing-based one.     

An empirical study of credit shock transmission in a small open economy

In this paper, we identify and estimate the dynamic effects of foreign (US) and national (Canadian) credit shocks in a small open economy. We use standard credit spreads as proxies to the external finance premium. Our first result suggests that the US and Canadian credit spreads contain substantial forecasting power for several measures of the Canadian real economic activity, especially during the recent financial crisis and its aftermath. Secondly, an adverse US credit shock generates a significant and persistent economic slowdown in Canada: the national external finance premium rises immediately while interest rates, credit aggregates, output and employment indicators decline. Variance decomposition reveals that credit shocks have a sizeable effect on real activity measures, leading indicators and credit spreads. Yet, the unexpected shocks in domestic credit spreads are not able to generate any significant dynamic response of the real activity once we control for the US credit market conditions.     

Capabilities,technologies, and firm exit during industry shakeout: Evidence from the global solar photovoltaic industry

Research Summary: Explanations of entrants’ survival in an emerging industry are premised on pre‐entry capabilities or technology entry choices prior to the emergence of the dominant design. We consider how these drivers interact to strengthen or nullify firms’ pre‐entry advantage, and facilitate adaptation as the industry evolves. We also expand the treatment of exit by separating dissolution from acquisition, in which firms’ capabilities continue to be utilized in the industry. Studying a recent shakeout in the global solar photovoltaic industry, we find that pre‐entry capabilities and technology choices act in a complementary manner for some firms, thereby enhancing survival, and as buffers against exit for others. Nearly half of exits were via acquisitions, and technology choice at entry played an important role in determining how firms exited. Managerial Summary: New industries are often characterized by intense technology competition that culminates in a dominant technology followed by industry shakeout. Although prior research underscores the central role of technology choice and firm capabilities to survival, we do not actually know how firms with different capabilities and who have made competing technology choices survive an industry shakeout. In this article, we show how entrants’ capabilities and technology choices can act in a complementary manner for some firms, enhancing their chance of survival, and as buffers against failure for others. Moreover, we explain why some firms that do exit are acquired, when others are dissolved.     

An examination of factors associated with the integration of human resource management and strategic decision making

Conceptually, a central aspect of “strategic HRM” is the integration of the HR function with strategic decision making. Little is known, however, about the factors that influence integration or its subsequent effects. Using data from 148 diverse organizations, it was found that strategic type and whether or not top management views employees as strategic resources were associated with integration, but that labor market munificence and organizational growth were not. The results concerning the relationship between integration and performance were surprising; integration was associated with a lower evaluation of the HRM function by top management. © 1998 John Wiley & Sons, Inc.     

Pass‐through in a concentrated industry: empirical evidence and regulatory implications

We estimate pass‐through with 30 years of data from the portland cement industry. Robust econometric evidence supports that fuel cost changes are more than fully transmitted downstream in the form of price changes. This validates an implicit pass‐through assumption made in recent academic research and regulatory analyses. We combine the econometric results with estimates of competitive conduct obtained from the literature to evaluate the incidence of market‐based CO₂ regulation. Producers bear roughly 11% of the regulatory burden and could be compensated with 16% of the revenues obtained.     

Workfare in Britain and America: A Personal View

But could workfare succeed in Britain? Professor Richard Nathan of Princeton University argues that the differences between Britain and America are such that workfare in Britain will require even larger changes in attitude than was the case in America.     

Global Collective Bargaining on Flag of Convenience Shipping

The most significant case of transnational union bargaining co‐ordination in existence is in the maritime shipping industry. A global union association, the International Transport Workers’ Federation (ITF), and a global employers’ federation, the International Maritime Employers’ Committee (IMEC), now negotiate over pay scales for seafarers on Flag of Convenience (FOC) ships. These negotiations set the pattern for pay and working conditions for a signifi‐cant portion of the global seafaring work‐force. The ITF brought about global wage bargaining by building and enforcing a global inter‐union consensus between developed and developing countries around a uniform wage rate.     

Large shocks,small shocks,and economic fluctuations: Outliers in macroeconomic time series

We analyse fifteen post-World War II US macroeconomic time series using a modified outlier identification procedure based on Tsay (1988a). ‘Large shocks’ appear to be present in all the series we examined. Furthermore, there are three basic outlier patterns: (1) outliers seem to be associated with business cycles, (2) outliers are clustered together—both over time and across series, (3) there appears to be a dichotomy between outlier behaviour of real versus nominal series. Also, after controlling for outliers, much of the evidence of non-linearity in many of the time series is eliminated.     

Improving health care means spending more time with patients and less time with inventory

In most hospitals and medical establishments, about 35 percent of their budgets are spent on supplies and labor to manage the inventories, material, and information flows; typically, these are managed as multiechelon systems. The importance of reducing inventory costs, among others, has become relevant in today's health care management. This research applies just-in-time concepts to health care inventories.