Equational Representation of Rendleman-Bartter Model
The equational presentation of the Rendleman-Bartter Model is as follows:
drt = φrtdt + σrtdWt
In this model Wt is nothing but a Wiener process. It models the risk factor involved in random markets. σ is the drift parameter of the Rendleman-Bartter model. φ is the standard deviation parameter of the Rendleman-Bartter model.