An Evaluation of Money Market Fund Reform Proposals

Samuel Hanson, David S Scharfstein and Adi Sunderam

IMF Economic Review, 2015, vol. 63, issue 4, 984-1023

Abstract: U.S. money market mutual funds (MMFs) are an important source of dollar funding for global financial institutions, particularly those headquartered outside the United States. MMFs proved to be a source of considerable instability during the financial crisis of 2007–09, resulting in extraordinary government support to help stabilize the funding of global financial institutions. In light of the problems that emerged during the crisis, a number of MMF reforms have been proposed, which are analyzed in this paper. The paper assumes that the main goal of MMF reform is safeguarding global financial stability. In light of this goal, reforms should reduce the ex ante incentives for MMFs to take excessive risk and increase the ex post resilience of MMFs to system-wide runs. The analysis suggests that requiring MMFs to have subordinated capital buffers could generate significant financial stability benefits. Subordinated capital provides MMFs with loss absorption capacity, lowering the probability that an MMF suffers losses large enough to trigger a run, and reduces incentives to take excessive risks. Other reform alternatives based on market forces, such as converting MMFs to a floating net asset value, may be less effective in protecting financial stability. The analysis sheds light on the fundamental tensions inherent in regulating the shadow banking system.

Date: 2015
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