Before revision:  Specifically, we use the mechanism of GBM with a reallocation parameter that quantifies the extent and direction of reallocation in the distribution, as proposed by Berman et al. We find that since the early 2000s reallocation is negative, meaning that incomes are exponentially diverging and that there is a perverse redistribution of resources from the poor to the rich.
After revision:  Specifically, we use the mechanism of GBM with a reallocation parameter that quantifies the extent and direction of composite redistribution implied in the income distribution.