  We study wealth rank correlations in a simple model of macro-economy. To
quantify rank correlations between wealth rankings at different times, we use
Kendall's $\tau$ and Spearman's $\rho$, Goodman--Kruskal's $\gamma$, and the
lists' overlap ratio. We show that the dynamics of wealth flow and the speed of
reshuffling in the ranking list depend on parameters of the model controlling
the wealth exchange rate and the wealth growth volatility. As an example of the
rheology of wealth in real data, we analyze the lists of the richest people in
Poland, Germany, the USA and the world.
