Before revision:  We find that the trees constructed using these rank methods tend to be more stable and maintain more edges over the dataset than those constructed using Pearson correlation  , that there are significant differences in the agreement of the centrality of various sectors and that despite these, the trees tend to have similar topologies  .
After revision:  We find that the trees constructed using these rank methods tend to be more stable and maintain more edges over the dataset than those constructed using Pearson correlation , that there are significant differences in the agreement of the centrality of various sectors and that despite these, the trees tend to have similar topologies . Portfolios constructed from the MST correlation matrices have a smaller turnover than those from the full covariance matrix for the larger markets, but not for the smaller German market. Using a bootstrap method we find that the correlation matrices constructed using the rank correlations are more robust, but there is little difference between the robustness of the MSTs .