Market symmetry in time-changed Brownian models

In this paper we examine which Brownian subordination with drift exhibits the symmetry property introduced by Fajardo and Mordecki [2006. Quantitative Finance 6, 219–227]. We find that when the subordination results in a Lévy process, a necessary and sufficient condition for the symmetry to hold is that the drift must be equal to-1/2. Also, we derive explicit conditions to test whether the NIG, CGMY and Meixner processes are symmetric or not. Finally, we perform some tests with real financial data.     

Preferences for skewness: evidence from a binary choice experiment

In this paper, we experimentally test skewness preferences at the individual level. Several prospects that can be ordered with respect to the third-degree stochastic dominance criterion are ranked by the participants of the experiment. We find that the skewness of a distribution has a significant impact on the decisions. Yet, while skewness has an impact, its direction differs substantially across subjects: 39% of our subjects demonstrate a statistically significant preference for skewness and 10% seem to avoid skewness (at 5% level). On the level of individual decisions we find that the variances of the prospects and subjects’ experience increase the probability of choosing the lottery with greater skewness.     

Recursive Moments of Compound Renewal Sums with Discounted Claims

Under regularity conditions, Le´veille´& Garrido [6] gives a derivation of the first two moments (resp. asymptotic) of a Compound Renewal Present Value Risk (CRPVR) process using renewal theory arguments. In this paper, with the same procedure and assuming that all the moments of the claim severity and the claims number process exist, we get recursive formulas for all the moments (resp. asymptotic) of the CRPVR process.     

Models and methods in motion: Declining the dogma dance

I take a communicative pragmatist and realist approach to futures studies. This implies a sensitivity to understanding what the audience can absorb and using futures methods effectively to create spaces for new futures. While Wilber's work affords us with new insights to engage with methodology, is not the only path. Indeed, it is intellectual bigotry to demand that everyone master the tools one personally deems most appropriate. Critical conversations about futures must remain open, where post-modernist and integral thinking widen our horizons, they are welcomed, where they straitjacket our thoughts, they are not.     

Pseudo Market Timing and the Long-Run Underperformance of IPOs

Numerous studies document long-run underperformance by firms following equity offerings. This paper shows that underperformance is very likely to be observed ex-post in an efficient market. The premise is that more firms issue equity at higher stock prices even though they cannot predict future returns. Ex-post , issuers seem to time the market because offerings cluster at market peaks. Simulations based on 1973 through 1997 data reveal that when ex-ante expected abnormal returns are zero, median ex-post underperformance for equity issuers will be significantly negative in event-time. Using calendar-time returns solves the problem.     

A vehicle routing cost evaluation algorithm for the strategic analysis of radial distribution networks

This article presents a new algorithm, based on bin packing algorithms, that determines vehicle routing costs on networks with certain geographic characteristics. Requiring very little data and computation time, the algorithm is used to test the impact of adding flexibility to a retailer’s Canadian distribution operations. It is shown that it is possible to save 5–10% of vehicle routing costs by modifying shipping schedules.     

Securing small farmer participation in supermarket supply chains in South Africa

Urbanisation and a growing middle class with changing consumption patterns provide an ideal setting for supermarkets to prosper. With South Africa's urban population approaching 60 per cent, supermarket retail chains are now important players in the agro-food sector. Over the last two decades they have begun to purchase produce from in-house sourcing companies who buy mainly from large-scale farmers. Together with the strict requirements of the retail groups, this makes it difficult for small-scale farmers to supply these retailers. This paper highlights the market changes that could continue to exclude small producers from mass consumer markets. It uses a case study to show how small farmers can be integrated into the urban retail market and, using evidence from this study, proposes a number of strategies to help them participate in the mainstream agro-food supply chains and an innovative model for including them while maintaining profitable business operations.