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- W4300890623 abstract "We consider a general class of diffusion-based models and show that, even in the absence of an Equivalent Local Martingale Measure, the financial market may still be viable, in the sense that strong forms of arbitrage are excluded and portfolio optimisation problems can be meaningfully solved. Relying partly on the recent literature, we provide necessary and sufficient conditions for market viability in terms of the market price of risk process and martingale deflators. Regardless of the existence of a martingale measure, we show that the financial market may still be complete and contingent claims can be valued under the original (real-world) probability measure, provided we use as numeraire the Growth-Optimal Portfolio." @default.
- W4300890623 created "2022-10-04" @default.
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- W4300890623 date "2012-09-20" @default.
- W4300890623 modified "2023-09-24" @default.
- W4300890623 title "Diffusion-based models for financial markets without martingale measures" @default.
- W4300890623 doi "https://doi.org/10.48550/arxiv.1209.4449" @default.
- W4300890623 hasPublicationYear "2012" @default.
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