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Purchasing Power Parity with Strategic Markets
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Konstantinos G. Papadopoulos
Veröffentlicht/Copyright:
2. Juni 2008
The paper shows that market power may be an additional cause for the failure of PPP without making the usual assumption of segmentation of national markets. We construct an international multi-currency economy based on the strategic market game model with multiple trading posts, where, besides sellers, buyers have market power as well. Although arbitrage is costless, PPP may fail and exchange rates may be inconsistent at equilibrium due to agents' price effects in currency and commodity markets. We derive conditions on individual net trades and elasticities that result in PPP violation and exchange rate inconsistencies. A numerical example shows that when consistency fails, the ordering of prices is not well-defined. When the number of agents in the economy increases, PPP deviations and inconsistencies tend to zero, thus providing a strategic foundation of PPP theory. Furthermore, the size of PPP deviations is positively related to the number of currencies traded.
Keywords: purchasing power parity; strategic market game; triangular arbitrage; exchange rate inconsistency; trading post
Published Online: 2008-6-2
©2011 Walter de Gruyter GmbH & Co. KG, Berlin/Boston
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Schlagwörter für diesen Artikel
purchasing power parity;
strategic market game;
triangular arbitrage;
exchange rate inconsistency;
trading post
Artikel in diesem Heft
- Topics Article
- When Stackelberg and Cournot Equilibria Coincide
- Conflict and Consensus: A Theory of Control in Organisations
- Backward Integrated Information Gatekeepers and Independent Divisions in the Product Market
- Identification of Individual Demands from Market Data under Uncertainty
- On the Role of Uncertainty in the Risk-Incentives Tradeoff
- Time-to-Build and the Inverse U-Shape Investment-Uncertainty Relationship
- Revisiting Independence and Stochastic Dominance for Compound Lotteries
- On Competitive Equilibria with Asymmetric Information
- A Duopoly Location Toolkit: Consumer Densities Which Yield Unique Spatial Duopoly Equilibria
- Purchasing Power Parity with Strategic Markets
- Global vs. Local Information in (Anti-)Coordination Problems with Imitators
- Costly Evidence Production and the Limits of Verifiability
- Research Joint Ventures, Optimal Licensing, and the R&D Subsidy Policy
- Comparative Statics and Welfare in Heterogeneous All-Pay Auctions: Bribes, Caps, and Performance Thresholds
- Ex Post Private Information and Monopolistic Screening
- Passing the Buck in Sequential Negotiation
- Bidding Strategies for Simultaneous Ascending Auctions
- The Dirty Face Problem with Unawareness
- Cost Pass-Through under Delegation
- Contributions Article
- Empirical Implications of Information Structure in Finite Extensive Form Games
- Counter Marginalization of Information Rents: Implementing Negatively Correlated Compensation Schemes for Colluding Parties
- Forgiving-Proof Equilibrium in Infinitely Repeated Games
- A Categorical Model of Cognition and Biased Decision Making
- Mechanism Design with Moderate Evidence Cost
- Connectivity and Allocation Rule in a Directed Network
- Competing for Recognition through Public Good Provision
- Principal-Agent Problems with Exit Options
- Herd Behavior and Contagion in Financial Markets
- A Constructive Proof that Learning in Repeated Games Leads to Nash Equilibria
- Advances Article
- The Full Surplus Extraction Theorem with Hidden Actions
