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This paper provides a fuller characterization of the analytical upper bounds for American options than has been available to date. We establish properties required of analytical upper bounds without any direct reliance on the exercise boundary. A class of generalized European claims on the same underlying asset is then proposed as upper bounds. This set contains the existing closed form bounds of Margrabe, (1978) and Chen and Yeh (2002) as special cases and allows randomization of the maturity payoff. Owing to the European nature of the bounds, across-strike arbitrage conditions on option prices seem to carry over to the bounds. Among other things, European option spreads may be viewed as ratio positions on the early exercise option. To tighten the upper bound, we propose a quasi-bound that holds as an upper bound for most situations of interest and seems to offer considerable improvement over the currently available closed form bounds. As an approximation, the discounted value of Chen and Yeh's (2002) bound holds some promise. We also discuss implications for parametric and nonparametric empirical option pricing. Sample option quotes for the European (XEO) and the American (OEX) options on the S&P 100 Index appear well behaved with respect to the upper bound properties but the bid–ask spreads are too wide to permit a synthetic short position in the early exercise option.

Trends in the car and aircraft manufacturing industry showed an evolution in the configuration and management of the production network. For instance, the aerospace manufacturing industry tended to be a closed system, competing on scale of production and focusing on maximization of own profit. Nowadays the automotive companies are developing open systems under the influence of globalization, outsourcing, and co-creation of value. Doing this with suppliers causes a shift of value from the focal firm to the supply chain, creating a value levering position for the so-called large-scale system integrator (LSSI). The leverage of value on suppliers introduces the value-leverage capability of the LSSI company. The capability of the LSSI to balance continuation, conception, and configuration is crucial for (long-term) profitability and competitive position. To express the value-leverage capabilities, the authors propose the variables “turnover per employee” (T/E), “research and development per employee” (RD/E), and “profit per employee” (P/E), whose (inter) relationship determines the capabilities.

The authors construct an intertemporal model of rent-maximizing behavior on the part of a timber harvester under potentially multidimensional risk as well as geographical heterogeneity. Subsequently, the authors use recursive methods (specifically, the method of stochastic dynamic programing) to characterize the optimal policy function – the rent-maximizing timber-harvesting profile. One noteworthy feature of their application to forestry in the province of British Columbia, Canada is the unique and detailed information the authors have organized in the form of a dynamic geographic information system to account for site-specific cost heterogeneity in harvesting and transportation, as well as uneven-aged stand dynamics in timber growth and yield across space and time in the presence of stochastic lumber prices. Their framework is a powerful tool with which to conduct policy analysis at scale.

In this paper, we build a complete information bargaining model of collective negotiation that can explain delays in reaching agreements. We structurally estimate the model using firm-level data for large Spanish firms. For this type of firm, the assumption of complete information seems a sensible one, and it matches the collective bargaining environment better than the one provided by private information models. The specification of the model with players having different discount factors allows us to measure their relative bargaining power, a recurrent question in the theory of bargaining. Our model replicates the data on delays at the sectoral and aggregate level. We also find that both entrepreneurs and workers have high discount factors, and no evidence that entrepreneurs have greater bargaining power, as usually assumed.

We model the interaction between a profit-maximizing firm and an activist using an infinite-horizon dynamic stochastic game. The firm enhances its reputation through “self-regulation”: voluntary provision of an abatement activity that reduces a negative externality. We show that in equilibrium the externality-reducing activity is subject to decreasing marginal returns, which can cause the firm to “coast on its reputation,” that is, decrease the level of externality-reducing activity as its reputation grows. The activist, which benefits from increases in the externality-reducing activity, can take two types of action that can harm the firm’s reputation: criticism, which can impair the firm’s reputation on the margin, and confrontation, which can trigger a crisis that may severely damage the firm’s reputation. The activist changes the reputational dynamics of the game by tending to keep the firm in reputational states in which it is highly motivated to invest in externality-reducing activity. Criticism and confrontational activity are shown to be imperfect substitutes. The more patient the activist or the more passionate it is about externality reduction, the more likely it is to rely on confrontation. The more patient the firm and the more important corporate citizenship is to firm’s brand equity, the more likely that it will be targeted by an activist that relies on confrontation.

Using a sample of 304 Certified Public Accountants (CPAs), this paper investigates gender differences in moral development and personal value preferences of CPAs. We used the Defining Issues Test (DIT) to measure moral development, the Rokeach Value Survey (RVS) (Rokeach, 1973) to determine value preferences, and the Musser and Orke (1992) typology to determine value type preferences. The typology analysis indicates that all CPAs in our sample prefer personal values to social values. From an overall ethical predisposition standpoint, males and females are more alike than different; yet, there were a few notable differences. Specifically, males prefer competence values and females have higher preference for moral values. For example, while male CPAs exhibit higher priorities for the competence values of imaginative and logical, female CPAs exhibit higher priority for the moral value of loving. We also find a gender effect for moral development, where female CPAs significantly outscore their male counterparts.