We introduce a model for the dynamics of stock prices based on a non quadratic path integral. The model is a generalization of Ilinski's path integral model, more precisely we choose a different action, which can be tuned to different time scales. The result is a model with a very small number of parameters that provides very good fits of some stock prices and indices fluctuations.
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A model for stocks dynamics based on a non-Gaussian path integral. (arXiv:1809.01342v1 [q-fin.CP])
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