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Stationary Markov equilibria for overlapping generations

At a stationary Markov equilibrium of a Markovian economy of overlapping generations, prices at a date-event are determined by the realization of the shock, the distribution of wealth and, with production, the stock of capital. Stationary Markov equilibria may not exist; this is the case with intra-generational heterogeneity and multiple commodities or long life spans. Generalized…

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English / 01/01/2004

Testable implications of general equilibrium theory: A differentiable approach

Is general equilibrium theory empirically testable? Our perspective on this question differs fromthe standard, Sonnenschein–Debreu–Mantel (SDM) viewpoint. While the SDM tradition considersaggregate (excess) demand as a function of prices, we suppose that what is observable is the equilibriumprice vector as a function of the fundamentals of the economy.We apply this perspective to…

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English / 01/01/2004

Is intertemporal choice theory testable?

Kreps–Porteus preferences constitute a widely used alternative to time separability. We showin this paper that with these preferences utility maximization does not impose any observable restrictions on a household’s savings decisions or on choices in good markets over time. The additional assumption of a weakly separable aggregator is needed to ensure that the assumption of utility…

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English / 01/01/2004

Multiple Unit Auctions and Short Squeezes

This article develops a theory of multiunit auctions where short squeezes can occur in the secondary market. Both uniform and discriminatory auctions are studied and bidders can submit multiple bids. We show that bidders with short and long preauction positions have different valuations in an otherwise common value setting. Discriminatory auctions lead to more short squeezing and…

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English / 11/08/2003

Stationary equilibria in asset-pricing models with incomplete markets and collateral

We consider an infinite-horizon exchange economy with incomplete markets and collateral constraints. As in the two-period model of Geanakoplos and Zame (2002), households can default on their liabilities at any time, and financial securities are only traded if the promises associated with these securities are backed by collateral. We examine an economy with a single perishable…

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English / 01/01/2003

Computing moments of ratios of quadratic forms in normal variables

The accuracy and speed of numerical methods for computing the moments of a ratio of quadratic forms in normal variables is examined, with particular application to the sample autocorrelation function. Methods based on a saddlepoint approximation are demonstrated to be not only superior to existing approximations, but are numerically reliable and virtually as accurate as the method…

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English / 01/01/2003

Bidder Behavior in Multiunit Auctions: Evidencefrom Swedish Treasury Auctions

We analyze a unique data set on multiunit auctions, which contains the actual demand schedules of the bidders as well as the auctionawards in over 400 Swedish Treasury auctions. First, we document that bidders vary their prices, bid dispersion, and the quantity demanded in response to increased uncertainty at the time of bidding. Second,we find that bid shading can be explained by a…

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English / 01/01/2002

Asset Pricing under the Quadratic Class

We identify and characterize a class of term structure models where bond yields are quadratic functions of the state vector. We label this class the quadratic class and aim to lay a solid theoretical foundation for its future empirical application. We consider asset pricing in general and derivative pricing in particular under the quadratic class. We provide two general transform…

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English / 01/01/2002

A Descriptive Analysis of the Finnish Treasury Bond Market 1991-1999

This paper presents a descriptive analysis of the primary and secondary market for Finnish treasury bonds. The paper focuses on three issues. First, we report basic descriptive statistics such as auction volumes and secondary market yields and volumes. Second, we estimate the revenues earned by primary dealers from the treasury bond market. Third, we analyse the development of the…

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English / 01/01/2002

Agency and the pace of adoption of new techniques

We study the relation of financial development and the pace of technological advance in a dynamic agency theoretic model. A firm which is financed by outside shareholders but run by managers has the prospect of a process innovation which arrives stochastically. Adopting the innovation requires firing old management and hiring new with skills appropriate for the new technique. We show…

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English / 01/01/2002

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