Welfare and efficiency in incomplete market economies with a single firm

In the quasilinear case, surplus maximization leads to constrained efficient Drèze equilibria. We investigate the question of whether surplus maximization can be useful beyond the quasilinear case.     

Profit maximization mitigates competition

Summary We consider oligopolistic markets in which the notion of shareholders' utility is well-defined and compare the Bertrand-Nash equilibria in case of utility maximization with those under the usual profit maximization hypothesis. Our main result states that profit maximization leads to less price competition than utility maximization. Since profit maximization tends to raise prices, it may be regarded as beneficial for the owners as a whole. Moreover, if profit maximization is a good proxy for utility maximization, then there is no need for a general equilibrium analysis that takes the distribution of profits among consumers fully into account and partial equilibrium analysis suffices.We wish to thank Hildegard Dierker and Nina Maderner for many helpful comments. This research was partially supported by the Danish Social Science Research Council. E. Dierker is grateful to the Department of Economics, University of Copenhagen, for its outstanding hospitality. B. Grodal appreciates the support from the Department of Economics, University of Vienna.     

Increasing returns to scale and productive systems

We consider an economy in which some producers may have nonconvex technologies, in particular they may operate under increasing returns to scale. These producers constitute the I-part of the economy. The prices of all goods and the target supply of the I-part are supposed to be given. Each producer in the I-part produces a certain output in a cost-minimizing way. There is a planning board which has to find decentralizing (gross) output levels for the producers in the I-part such that the net output equals target supply. The existence of such output levels is proven under a productivity assumption which includes the case of strongly increasing returns to scale as well as productive Leontief systems.     

Price-dispersed preferences and C1 mean demand

In this paper we introduce the concept of price-dispersed preferences. Moreover we state conditions under which economies with price-dispersed preference distributions have a continuously differentiable mean demand function.     

Valuing the Defeasance Option in Securitized Commercial Mortgages

To protect the interests of investors, commercial mortgage loans pooled for the issuance of commercial mortgage-backed securities (CMBS) have restrictive covenants that discourage the borrower from refinancing. Such restrictions limit the borrower's ability to access any accumulated equity. The predominant means of accessing this equity today is defeasance. By defeasing a loan, the borrower substitutes the commercial mortgage with U.S. Treasury or agency obligations whose payments match those of the defeased mortgage. Therefore, defeasance is an exchange option whereby the borrower gives up the portfolio of Treasury or agency securities and in return receives the market value of the commercial mortgage plus the liquidity benefits arising from accessing the accumulated equity in the underlying property. The value of the option to defease is shown to depend critically on the rate of return that can be earned on the released equity, prevailing interest rate conditions, as well as the option's contractual features.     

Online customer relationships in the European financial services sector: A cross-country investigation

Reportedly, over the past 30 years there has been a general sense of willingness, on behalf of suppliers and customers alike, to develop increasingly close ‘emotional’ relationships based on trust. While buyers reward suppliers with brand loyalty, suppliers in turn develop strategies continually to energise this ‘connective’ relationship. As customers and suppliers increasingly become physically connected to one another via computer networks an important emergent issue is whether the nature of their relationship is changing as a result of transactions taking place across these networks. This paper discusses part of an exploratory research project designed to question the extent to which computer-based technologies that previously enabled the building of emotionally connective relationships through the analysis of customer data are instead facilitating anonymous transactional relationships. The project focuses on organisations in three European countriescolon; France, Germany and the United Kingdom. The broad aims are to explore whether consumer segments are emerging, that actually prefer the minimal personal interaction afforded by sophisticated new computer technology, and to examine the extent to which financial service organisations are responding to the demands of such segments. The paper includes an outline of the contextual background, followed by the research methodology and a discussion of the findings. Conclusions are drawn about the implications of these findings for both industry practitioners and academic researchers.     

Smooth preferences and the regularity of equilibria

To study equilibria we describe an economy by its distribution of consumers' preferences and endowments. All preferences are smooth and weakly convex. Demand of an economy need not be single valued, but there is an open dense set of economies for which demand is a C¹-function in a neighborhood of the equilibrium prices. We call an economy regular if its excess demand is transversal to zero. A regular economy has locally unique equilibria. It is shown that regular economies form an open dense set on which the equilibrium price correspondence varies continuously and the number of equilibria is locally constant.     

Dynamic Information Disclosure

We explore the optimal timing of voluntary disclosures when firms and outside investors have correlated but not identical signals. By delaying disclosure of their signal, firms encourage the acquisition of information by investors by reducing the latter's exposure to the long‐term risk of holding the asset. Immediate disclosure reduces rents from acquiring the correlated signal, and thus is sometimes suboptimal in a dynamic setting. We characterize conditions under which postponing disclosure is preferable, which allows us to develop predictions on the timing of voluntary information disclosures such as management guidance.