Please use this identifier to cite or link to this item: http://hdl.handle.net/10419/62186
Authors: 
Amendinger, Jürgen
Becherer, Dirk
Schweizer, Martin
Year of Publication: 
2000
Series/Report no.: 
Discussion Papers, Interdisciplinary Research Project 373: Quantification and Simulation of Economic Processes 2000,41
Abstract: 
We consider an investor maximizing his expected utility from terminal wealth with portfolio decisions based on the available information flow. This investor faces the opportunity to acquire some additional initial information G.. The subjective fair value of this information for the investor is defined as the amount of money that he can pay for G such that this cost is balanced out by the informational advantage in terms of maximal expected utility. We calculate this value for common utility functions in the setting of a complete market modeled by general semimartingales. The main tools are results of independent interest, namely a martingale preserving change of measure and a martingale representation theorem for initially enlarged filtrations.
Subjects: 
utility maximization
value of information
initial enlargement of filtrations
Martingale preserving measure
predietable representation property
JEL: 
G10
G14
Persistent Identifier of the first edition: 
Document Type: 
Working Paper

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