Jesper Lund Pedersen, Prediction of the ultimate maximum of Brownian motion Abstract: The focus of this talk will be on optimal prediction of the ultimate maximum of a Brownian motion. At time 0 we start to observe a Brownian path. Based upon the information which is continuously updated through the observation of the path, a (stopping) time is determined such that the path is as close as possible to its unknown ultimate maximum (over a given time interval). The closeness is measured by a q-mean and a probability distance. Formally this can be formulated as an optimal stopping problem.