Stark, Oded; Budzi´nski, Wiktor; Jakubek, Marcin; … - 2022
We develop a formula for the optimal size of a joint savings association between individuals who share the same … optimal size of a ROSCA as the number of participants that results in the minimal expected waiting time. We show that an … optimal size of a ROSCA exists, that it is limited, and that it is a multiple of the number of time periods that it takes an …