Arbeitspapier

Non-Implementability of Arrow-Debreu Equilibria by Continuous Trading Under Knightian Uncertainty

Under risk, Arrow-Debreu equilibria can be implemented as Radner equilibria by continuous trading of few long-lived securities. We show that this result generically fails if there is Knightian uncertainty in the volatility. Implementation is only possible if all discounted net trades of the equilibrium allocation are mean ambiguity-free.

Language
Englisch

Bibliographic citation
Series: Center for Mathematical Economics Working Papers ; No. 527

Classification
Wirtschaft
Criteria for Decision-Making under Risk and Uncertainty
Optimization Techniques; Programming Models; Dynamic Analysis
Portfolio Choice; Investment Decisions
Subject
Knightian Uncertainty
Ambiguity
General Equilibrium
Asset Pricing
Radner Equilibrium

Event
Geistige Schöpfung
(who)
Riedel, Frank
Beissner, Patrick
Event
Veröffentlichung
(who)
Bielefeld University, Center for Mathematical Economics (IMW)
(where)
Bielefeld
(when)
2014

DOI
doi:10.2139/ssrn.2500793
Handle
Last update
10.03.2025, 11:43 AM CET

Data provider

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Object type

  • Arbeitspapier

Associated

  • Riedel, Frank
  • Beissner, Patrick
  • Bielefeld University, Center for Mathematical Economics (IMW)

Time of origin

  • 2014

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