Arbeitspapier
Risk Matters: Breaking Certainty Equivalence
In this paper we use the property that certainty equivalence, as implied by a first-order approximation to the solution of stochastic discrete-time models, breaks in its equivalent continuous-time version. We study the extent to which a first-order approximated solution built by perturbation methods accounts for risk. We show that risk matters economically in a real business cycle (RBC) model with habit formation and capital adjustment costs and that neglecting risk leads to substantial pricing errors. A first-order approximation in continuous time reduces pricing errors by 90 percent relative to the certainty equivalent linear solution.
- Language
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Englisch
- Bibliographic citation
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Series: CESifo Working Paper ; No. 8250
- Classification
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Wirtschaft
Mathematical Methods
Optimization Techniques; Programming Models; Dynamic Analysis
Computational Techniques; Simulation Modeling
General Aggregative Models: Neoclassical
Business Fluctuations; Cycles
Asset Pricing; Trading Volume; Bond Interest Rates
- Subject
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certainty equivalence
perturbation methods
pricing errors
- Event
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Geistige Schöpfung
- (who)
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Parra-Alvarez, Juan Carlos
Polattimur, Hamza
Posch, Olaf
- Event
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Veröffentlichung
- (who)
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Center for Economic Studies and ifo Institute (CESifo)
- (where)
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Munich
- (when)
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2020
- Handle
- Last update
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10.03.2025, 11:42 AM CET
Data provider
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Object type
- Arbeitspapier
Associated
- Parra-Alvarez, Juan Carlos
- Polattimur, Hamza
- Posch, Olaf
- Center for Economic Studies and ifo Institute (CESifo)
Time of origin
- 2020