  We have analyzed the cross-correlations of daily fluctuations for N=6 358 US
stock prices during the year 1999. From those $N(N-1)/2$ correlations
coefficients, the Minimum Spanning Tree (MST) has been built. We have
investigated the topology exhibited by the MST. Eventhough the average
topological number is $<n > \approx 2$, the variance $\sigma$ of the
topological distribution f(n) diverges. More precisely, we have found that
$f(n) \sim n^{-2.2}$ holding over two decades. We have studied the topological
correlations for neighbouring nodes: an extremely broad set of local
configurations exists, confirming the divergence of $\sigma$.
