Elyès Jouini () (CEREMADE - CEntre de REcherches en MAthématiques de la DEcision - CNRS : UMR7534 - Université Paris Dauphine - Paris IX) Hedi Kallal (SBS - salomon barney smith - Smith Barney Investments) Clotilde Napp (CEREMADE - CEntre de REcherches en MAthématiques de la DEcision - CNRS : UMR7534 - Université Paris Dauphine - Paris IX)
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This paper studies foundational issues in securities markets models with fixed costs of trading, i.e. transactions costs that are bounded regardless of the transaction size, such as fixed brokerage fees, investment taxes, operational, and processing costs or opportunity costs. We show that the absence of free lunches in such models is equivalent to the existence of a family of absolutely continuous probability measures for which the normalized securities price processes are martingales. This is a weaker condition than the absence of free lunch in frictionless models, which is equivalent to the existence of an equivalent martingale measure. We also show that the only arbitrage-free pricing rules on the set of attainable contingent claims are those that are equal to the sum of an expected value with respect to any absolutely continuous martingale measure and of a bounded fixed cost functional. Moreover, these pricing rules are the only ones to be viable as models of economic equilibrium.
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Paper provided by HAL in its series Post-Print with number
halshs-00167157_v1.
Length: Date of creation: 2001 Date of revision: Publication status: Published, Journal of Mathematical Economics, 2001, 197-221 Handle: RePEc:hal:journl:halshs-00167157_v1
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Cited by: (explanations, Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.)
Chambers, Robert G. & Quiggin, John, 2002.
"Resource Allocation And Asset Pricing,"
Working Papers
28571, University of Maryland, Department of Agricultural and Resource Economics.
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