Modelling spikes and pricing swing options in electricity markets

Most electricity markets exhibit high volatilities and occasional distinctive price spikes, which result in demand for derivative products which protect the holder against high prices. In this paper we examine a simple spot price model that is the exponential of the sum of an Ornstein–Uhlenbeck and an independent mean-reverting pure jump process. We derive the moment generating function as well as various approximations to the probability density function of the logarithm of the spot price process at maturity T. Hence we are able to calibrate the model to the observed forward curve and present semi-analytic formulae for premia of path-independent options as well as approximations to call and put options on forward contracts with and without a delivery period. In order to price path-dependent options with multiple exercise rights like swing contracts a grid method is utilized which in turn uses approximations to the conditional density of the spot process.     

A replication note on unemployment in the OECD since the 1960s: what do we know?

Nickell et al. (Econ J 115(500):1–27, 2005) argue that unemployment rates cointegrate with labour market institutions in a panel of OECD countries. This paper replicates their Maddala–Wu panel cointegration test and shows that this test is only valid when (i) the number of countries tends to infinity and (ii) the underlying country-specific cointegration tests are independent. Their finding of cointegration does not survive when small sample properties and heterogeneous cross-sectional dependencies are taken into account. We acknowledge financial support from the Interuniversity Attraction Poles Program, Belgian Science Policy, contract no. P5/21. The usual disclaimer applies.     

Measuring time-varying financial market integration: An unobserved components approach

We measure the time-varying degree of world stock market integration of five developed countries (Germany, France, UK, US, and Japan) over the period 1970:1–2011:10. Time-varying financial market integration of each country is measured through the conditional variances of the country-specific and common international risk premiums in equity excess returns. The country-specific and common risk premiums and their conditional variances are estimated from a latent factor decomposition through the use of state space methods that allow for GARCH errors. Our empirical results suggest that stock market integration has increased over the period 1970:1–2011:10 in all countries but Japan. And while there is a structural increase in stock market integration in four out of five countries, all countries also exhibit several shorter periods of disintegration (reversals), i.e. periods in which country-specific shocks play a more dominant role. Hence, stock market integration is measured as a dynamic process that is fluctuating in the short run while gradually increasing in the long run.     

Testing for time variation in the natural rate of interest

This paper replicates in a wider sense the unobserved components model of Laubach and Williams (Review of Economics and Statistics, 2003, 85, 1063–1070) to estimate the natural rate of interest (NRI) and investigates the role of model uncertainty. A stochastic Bayesian model selection procedure is employed to test the hypothesis of time variation in the NRI against a constant NRI. The model selection confirms time variation in the NRI as a result of changes in potential output growth, but other determinants of the NRI are found constant.     

Transferability of private food marketing success factors to public food and health policy: An expert Delphi survey

Public policy activities to promote healthy diets have been criticised for their lack of success. Applying a marketing approach to non-commercial policy objectives such as healthy eating, termed social marketing, is an emerging but as yet underdeveloped field. An earlier study conducted a case analysis of recent successful commercial food marketing and identified key success factors that may be further transferred to the public sector. Six of these factors (trend awareness, endorsement, emotion, common value, media coverage, and ‘why and how’) were presented to and discussed by 31 experts in a two-round Delphi survey. The objective was to determine to what extent these factors are used in public information and social marketing campaigns for healthier eating, and what is required to successfully transfer those factors into the public arena.     

Stock option taxation: a missing piece in European innovation policy?

Europe continues to lag behind the USA in venture capital (VC) activity and in the creation of successful startups, and has recently been surpassed by China. This is despite the fact that many European countries have deep financial markets, strong legal institutions, and high R&D spending. We point to the tax treatment of employee stock options as an explanation for the stronger growth of the US VC sector. As a response to high uncertainty and transaction costs, VC financiers have developed a model in which founders and key recruitments are compensated with stock options under complex contracts. Low tax rates on employee stock options further raise the relative returns of working and investing in innovative entrepreneurial firms, and shift financial capital and talent to that sector. We measure the effective tax on stock options in VC-backed entrepreneurial firms in a number of developed economies. Countries with lower stock option taxation have higher VC activity and more high-growth expectation entrepreneurial activity. Based on these associations and the theoretical and empirical literature, we argue that more lenient taxation of gains on employee stock options can be a strategy for European countries to catch up in entrepreneurial finance. This tax policy would narrowly target entrepreneurial startups without requiring broad tax cuts. The favorable tax treatment of stock options allows the state to promote firms that rely on entrepreneurial finance and make use of these types of contracts without lowering taxes for other sectors of the economy.     

Foreign direct investment,political risk and the limited access order

The common explanations for political risk in foreign investment focus on the opportunism of host-country governments. However, when governments are too weak to regulate and effectively control them, domestic business elites may also cause political risk. In the literature on political risk, the host state is mostly modelled as a single, cohesive actor and elites outside of the government are not taken into account. By contrast, this paper conceptualises political risk as a lack of government assertiveness vis-à-vis domestic business elites, drawing on the limited access order (LAO) concept developed by Douglass North and his co-authors. It presents the case of Swedish Tele2’s investment in Russia. The mobile telecommunications provider was highly successful in Russia until it became a threat to the business interests of three Russian oligarchs. Regulatory agencies in Russia lacked the necessary authority to provide a level playing field in the telecommunications industry. They did not intervene when Tele2’s access to vital licenses was blocked by competitors, effectively squeezing the Swedes out of the Russian market. This paper concludes that in LAOs foreign investors are initially welcome, but political risk is high when the market competition with domestic elites becomes intense.     

Wirtschaftlicher Erfolg durch Informationsvorsprung — Unternehmensplanung mittels SAP/R3

Unter Verwendung der Standard-Software SAP R/3 l?sst sich eine integriert ablaufende Unternehmensplanung für ein Unternehmen mit Serienfertigung realisieren.     

Consumers’ multifaceted deal knowledge in a grocery retail setting

Despite its relevance to retailers, studies of consumers’ deal knowledge have been few. This study explores consumers’ deal knowledge before, during, and after the store visit applying a between-subjects field-study design with 1204 respondents. In particular, the authors investigate perception of deal price status, typical deal price knowledge, and deal-spotting ability. Results show reasonably stable knowledge of typical deal prices, while knowledge of deal price status and deal-spotting ability improves significantly during grocery shopping. Surprisingly, consumers’ deal knowledge is not conditional on purchasing a special thus indicating that most consumers, consciously or unconsciously, scan for promotion signals when shopping groceries. In addition, the results suggest consumers are not easily fooled, as the vast majority is able to spot ‘good’ and ‘bad’ deals, while also possessing typical deal price knowledge. Furthermore, the findings suggest that consumers store internal reference deal prices. Retailers are therefore well advised to consider mixed depth and creative discount patterns to prevent ‘perfect’ perceptions of typical deal prices.