Θεωρίες τιμολόγησης με ασυμμετρία πληροφόρησης

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Keywords
Ισορροπία Nash ; Ανταγωνιστική συμπεριφορά ; Στρατηγική συμπεριφορά ; Πληροφορημένοι συναλλασσόμενοι ; Απληροφόρητοι συναλλασσόμενοι ; Νoise traders ; Τιμή εκκαθάρισης ; Αξία ρευστοποίησης ; Προγράμματα ζήτησης ; Αποστροφή κινδύνου ; Αναμενόμενο όφελος ; Ισορροπία ορθολογικών προσδοκιώνAbstract
In an asset market, both the asset’s price and the traders’ expected profits change according to their behavior and knowledge. Each trader can either acquire private information for the asset’s liquidation value, or try to evaluate only through the prices. Especially, the presence of noise traders affects drastically both the prices and the evaluations. Every trader may behave competitively, without taking into consideration the strategies of his counterparties, or utilize his market power and act strategically. In this thesis, we present the definitions of competitive and strategic equilibrium (Rational Expectations Equilibrium and Nash/Bayesian Nash Equilibrium respectively) and analyze Kyle’s model (1989) for a market with asymmetric information. We use a numerical approach in order to compare these equilibria and draw important conclusions based on the traders’ demand schedules, the asset’s price and the expected utilities.