Mind the gap? Sources and implications of supply-demand imbalances in collateral asset markets

Increasing demand for collateral assets in the aftermath of the financial crisis has raised concerns about a shortage of high-quality assets (HQA). Drawing on a recent report by the Committee on the Global Financial System, we argue that such concerns seem unjustified. In aggregate, the increase in the supply of HQA appears sufficient to meet the additional demand arising from both market forces and regulatory changes. But given the uneven distribution of HQA among market participants, higher demand is likely to trigger market responses that could themselves generate risks for the financial system and thus warrant further monitoring.