Abstract
The financial crisis of 2007–2008 had its origins in the manner by which complex financial instruments allowed qualitative phenomena to become a tradable commodity. This process is part of a profound tendency in modern economic life to convert the qualitative, specific and non-commensurable into quantitative data. Simmel, in his Philosophy of Money, identified this transformative quality as an inherent characteristic of money. This paper argues that Simmel’s work continues to provide important insights. Modern financial instruments, in particular collateralised debt obligations, possess this same transformative power thus showing the enduring relevance of Simmel’s work.