Before revision:  The spread of certain financial derivative products, such as credit default swaps and equity-linked derivatives, scales with the edge density of the long-term debt securities network . In addition, the algebraic connectivity of the equity securities network, taken as a measure for the robustness of financial markets, drops already sharply well ahead of the 2008 financial crisis .
After revision:  The spread of certain financial derivative products, such as credit default swaps and equity-linked derivatives, scales with the edge density of the long-term debt securities network is found to describe, and even forecast, the 2008 financial crisis .