Risk premiums on inventory assets: the case of crude oil and natural gas

This study tested for the presence of risk premiums on crude oil and natural gas. The econometric analysis followed from a stochastic model in which the equilibrium value of inventories depends on a convenience yield and an option value related to price uncertainty. The empirical findings provide rather strong support for the presence of risk premiums and also evidence for the existence of convenience yields. The risk premiums rose sharply with greater price volatility and help to explain why prices for immediate sales often exceed prices for future delivery. © 2001 John Wiley & Sons, Inc. Jrl Fut Mark 21:109–126, 2001     

Individual approaches to futures thinking and decision making

This paper presents results of a second international web-based survey designed to gather data about how individuals approach thinking about their futures and making decisions regarding their futures. Five hundred and five respondents from 38 countries participated in the survey. Similar to the first survey, the sample has gender, age and religious diversity but is not representative with respect to education, income and race/ethnicity. The results suggest that the external environment provides a great deal of stimuli for people to think about the future (e.g., special occasions like New Years day, birthdays, and funerals). Individuals tend to think about the future more in the morning, and just before bed. Overall, most respondents experience happiness, confidence, and lightness when thinking about the future. Respondents employ many different approaches to thinking about the future, such as relying on personal past experiences, imagining future situations, and relying on their personal intuitions. Most respondents do not pattern their futures decision making on decisions made by others or on tradition. Most respondents believe that their thinking about the future is very worthwhile; most develop plans and take decisive action as a result of their efforts. About three quarters of the respondents report that they are able to predict their personal futures at least one-half of the time. Most respondents face few barriers to thinking about the future, although many reported it would be nice to have more energy, be able to concentrate better, and be able to better organize their thoughts. Females report that thinking about the future is a more emotional experience than it is for males. Males, on the other hand, have more confidence in their futures-oriented decision making abilities. Age plays a big part in how individuals relate to and think about the future. Younger respondents think more about the future more times during the day and find thinking about the future more fearful and anxious. They also pattern their decisions more on those made by others and older individuals. Older respondents tend to rely a great deal upon their lifetime of experiences and worry less about the future. Middle-aged respondents report worrying more about financial and career issues and report that thinking about the future can be emotionally draining.     

A singular chain of events

This paper presents a scenario, a written narrative that describes a series of events that could lead to the extinction of humans as a species. The scenario is built upon three blocks of events. The first contains events that could severely and rapidly reduce human population in a relatively few years. The second block of events describes the regression of human civilization and technological base and the further loss of human population. The third block encompasses global environmental events that the remaining humans are subsequently unprepared to handle. The scenario posits the death by asphyxiation of the last human being by the year 3000.     

The usefulness of inaccurate models: Towards an understanding of the emergence of financial risk management

Is the growth of modern financial risk management a result of the accuracy and reliability of risk models? This paper argues that the remarkable success of today’s financial risk management methods should be attributed primarily to their communicative and organizational usefulness and less to the accuracy of the results they produced. This paper traces the intertwined historical paths of financial risk management and financial derivatives markets. Spanning from the late 1960s to the early 1990s, the paper analyses the social, political and organizational factors that underpinned the exponential success of one of today’s leading risk management methodologies, the applications based on the Black–Scholes–Merton options pricing model. Using primary documents and interviews, the paper shows how financial risk management became part of central market practices and gained reputation among the different organisational market participants (trading firms, the options clearinghouse and the securities regulator). Ultimately, the events in the aftermath of the market crash of October 1987 showed that the practical usefulness of financial risk management methods overshadowed the fact that when financial risk management was critically needed the risk model was inaccurate.     

The dialectics of competency acquisition: pollution prevention in electric generation

Strategy researchers now recognize that distinctive competencies are critically important for sustained competitive advantage. The processes by which such competencies are acquired, however, has only started to be examined. Connections between macro-industrial system level properties and micro-developments in proprietary technology at the firm level need to be made. This paper argues that system-wide properties, such as long-standing elementary and opposing logics in societal forces like governments and markets, and micro-developments, such as the firm's capacity to search for talent, technology, and ideas and to harmonize what it learns internally, can contribute in significant ways to the creation and acquisition of new competencies. Based on the case of pollution prevention in electric generation, it shows how the system-wide properties channel and direct the paths that the acquisition of new competencies take and how they interact with micro-developments at the firm level. © 1998 John Wiley & Sons, Ltd.     

Predicting divestiture of unrelated acquisitions: an integrative model of ex ante conditions

The majority of unrelated acquisitions are divested shortly after their purchase. Often, those acquisitions-turned-divestitures result in strategic, organizational, and financial losses for both the acquiring and the acquired companies. To consider how such divestitures can be avoided, this study examined some of the differences between divested and retained unrelated acquisitions. The study integrated four explanations for why unrelated acquisitions occur and related them to the fates of such acquisitions. Unrelated acquisitions were hypothesized to be divested when they fail to realize some motives and expectations that prevailed at the time of acquisition. Two samples of unrelated acquisitions (135 from 1977 and 140 from 1987) were tracked over 5-year periods. The results indicate that motives and conditions at the time of acquisition, and changes in those motives and conditions, were related to the fates of the acquisitions. In addition, the relative importance of those factors varied across the periods studied. Discriminant analyses further demonstrate that most divestitures could be predicted correctly on the basis of those motivations and conditions. The implications of the findings are discussed. © 1997 John Wiley & Sons, Ltd.     

A note on estimating the minimum extended Gini hedge ratio

The extended Gini coefficient, Γ, is a measure of dispersion with strong theoretical merit for use in futures hedging. Yitzhaki (1982, 1983) provides conditions under which a two-parameter framework using the mean and Γ of portfolio returns yields an efficient set consistent with second-order stochastic dominance. Unlike mean-variance theory, the mean-Γ framework requires no particular return distribution or utility function to yield this conclusion. However, Γ must be computed iteratively making it less convenient to use than variance. Shalit (1995) offers a solution to the computation problem by suggesting an instrumental variables (IV) slope estimator, β^IV, as the basis for the minimum extended Gini hedge ratio where the instruments are based on the empirical distribution function (edf) of futures prices. However, the validity of employing the IV slope coefficient as the basis for the minimum extended Gini hedge ratio requires the questionable assumption that the rankings of futures prices to be the same as those for the profits of the hedged portfolio. © 1999 John Wiley & Sons, Inc. Jrl Fut Mark 19:101–113, 1999