Although the crisis had classic features, to a significant extent it took place in a novel institutional context, making diagnosis and response more challenging: For example, in the United States, collateralized wholesale funding rather than conventional bank deposits constituted the hot money, and run pressure was experienced not only by banks but by diverse other institutions, such as structured investment vehicles.
In addition, the scale and complexity of globalized financial institutions and markets made it difficult to predict how the crisis might spread or to coordinate the response. One of the few positive aspects of this episode was the extraordinary degree of international cooperation achieved among policymakers, including the Bank of England and the Federal Reserve, in responding to the crisis.