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Empty promises and arbitrage

delete1999-07-02
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Philip H. Dybvig
DOI:10.1093/rfs/12.4.807delete
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Abstract

Abstract

En 中文
Analysis of absence of arbitrage normally ignores payoffs in states to which the agent assigns zero probability. We extend the fundamental theorem of asset pricing to the case of no empty promises in which the agent cannot promise arbitrarily large payments in some states. There is a superpositive pricing rule that can assign positive price to claims in zero probability states important to the market as well as assigning positive prices to claims in the states of positive probability. With continuous information arrival, no empty promises can be enforced by shutting down the agent's subsequent investments once wealth hits zero.
Keywords:
VALUATION
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Journal

Review of Financial Studies cover
Review of Financial Studies
IF:
5.4
Papers:
2.8K
Citations:
3.0W

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