The Law of Minimal Price

Eckhard Platen ()

No 215, Research Paper Series from Quantitative Finance Research Centre, University of Technology, Sydney

Abstract: This paper introduces a realistic, generalized market modeling framework for which the Law of One Price no longer holds. Instead the Law of the Minimal Price will be derived, which for contingent claims with long term to maturity may provide significantly lower prices than suggested under the currently prevailing approach. This new law only requires the existence of the numeraire portfolio, which turns out to be the portfolio that maximizes expected logarithmic utility. In several ways it will be shown that the numeraire portfolio cannot be outperformed by any nonnegative portfolio. The new Law of the Minimal Price leads directly to the real world pricing formula, which uses the numeraire portfolio as numeraire and the real world probability for calculating conditional expectations. The cost efficient pricing and hedging of extreme maturity zero coupon bonds illustrates the new law in the context of the US market.

Keywords: law of one price; law of the minimal price; derivative pricing; real world pricing; numeraire portfolio; growth optimal portfolio; strong arbitrage; extreme maturity bond (search for similar items in EconPapers)
JEL-codes: G10 G13 (search for similar items in EconPapers)
Pages: 24 pages
Date: 2008-02-01
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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