The Eurozone crisis that erupted in 2008 has raised sincere doubts about the durability of political and financial linkages among its member states. This paper associates the resulting political–economic stasis of the Eurozone with the coevolution of the financial and monetary system at the European scale. The argument builds on insights from financial geography, cultural political economy, and sociology of finance. It focuses on the idea that financial market rationalities, which fluctuate over time and space, are socially constructed through an interplay of acts of ‘bricolage’ by state and market actors. We relate these rationalities to the main European initiatives regarding financial and monetary integration since the 1992 Maastricht Tr...