Mayerhofer, Eberhard - In: Risks : open access journal 7 (2019) 4/105, pp. 1-10
First, we give a closed-form formula for first passage time of a reflected Brownian motion with drift. This corrects a formula by Perry et al. (2004). Second, we show that the maximum before a fixed drawdown is exponentially distributed for any drawdown, if and only if the diffusion...