Abstract: Networks, Discipline, and Idiosyncratic Risks in Mexican Banks, 1950-1980

Gustavo A. Del Angel


Between 1945 and 1982 a network of interlocking directorates formed at the interior of the Mexican banking system. However, little work has been done to explore its implications. This paper proves that the network among bankers served to transfer information and to create a system of monitoring self-discipline within the financial system and hence to reduce idiosyncratic risks. Using social network analysis with a database of the banks' boards, this paper presents computations of the centrality of the network. Degree and Eigenvalue centrality, used as measures for interconnection among banks, are then contrasted with indicators of financial performance for individual banks using a panel regression technique.