Risk-neutral valuation with infinitely many trading dates |
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| Authors: | Alejandro Balbs Raquel Balbs Silvia Mayoral |
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| Institution: | aUniversidad Carlos III, CL, Madrid 126, 28903 Getafe, Madrid, Spain;bUniversidad Autónoma. Avda. Tomás y Valiente 5, Módulo E-XVI, 28049 Madrid, Spain;cUniversidad de Navarra, Edificio Bibliotecas, 31080 Pamplona, Navarra, Spain |
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| Abstract: | The first Fundamental Theorem of Asset Pricing establishes the equivalence between the absence of arbitrage in financial markets and the existence of Equivalent Martingale Measures, if appropriate conditions hold. Since the theorem may fail when dealing with infinitely many trading dates, this paper draws on the A.A. Lyapunov Theorem in order to retrieve the equivalence for complete markets such that the Sharpe Ratio is adequately bounded. |
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| Keywords: | A A Lyapunov theorem Asset pricing Martingale measure Projective system Sharpe ratio |
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