Aguilar, Jean-Philippe; Kirkby, Justin Lars; Korbel, Jan - In: Risks 8 (2020) 4, pp. 1-27
We consider several market models, where time is subordinated to a stochastic process. These models are based on various time changes in the Lévy processes driving asset returns, or on fractional extensions of the diffusion equation; they were introduced to capture complex phenomena such as...