Network Centrality of Customers and Suppliers∗

We construct network centrality measures for customer and supplier industries in the U.S. economy. Consistent with Ahern, et al. (2014), we find central suppliers have higher levels of systematic risk than central customers and therefore more exposed to sectoral shocks. We posit that central suppliers have incentives to channel funds to their customers via trade credit. Our empirical results are consistent with such a view. We find that the cash to cashflow sensitivity and value of cash is significantly higher for central suppliers than non-central firms, even among those financially unconstrained. In contrast, central customers have no cash to cash flow sensitivity, consistent with supplier trade credit redistribution helping to relieve customers’ financial constraints. Using the 2008 financial crisis as an exogenous shock, we document that central suppliers with high pre-crisis liquidity decrease their investment, while only customers without central suppliers are sensitive to the crisis. Similarly, only customers without central suppliers are sensitive in their payable days to the crisis.