Financial derivatives and the theory of money

Financial derivatives are used and counted as money, but it is unclear exactly what sort of money they are. This article explores the monetary role of financial derivatives in securing the global financial system. It finds that derivatives commensurate the values of different forms of financial assets, and, in the process, they facilitate continuity across different forms of money. In this role they are a form of commodity money, but very different from conventional understandings of commodity money. In developing this idea, the paper engages recent debates in Economy and Society about the nature of money. In particular, it takes issue with Ingham's state theory of money, which cannot adequately engage exchange rate volatility and extra-national roles of money, and Lapavitsas' approach to a Marxist theory of money, which relegates commodity money to a historical abstraction. Keywords: money; commodity money; financial derivatives; risk; commensuration; Marx.