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Discussion Paper
Measuring Mutual Fund Liquidity with N-PORT
Open-end mutual funds play a critical role in financial markets and remain major holders of key securities including corporate, Treasury, and municipal bonds. Past stress episodes have exposed the fragility of liquidity provision by corporate bond mutual funds, which can experience large investor outflows that must be met on demand despite holding relatively illiquid assets.
Report
Liquidity Transformation Risks in U.S. Bank Loan and High-Yield Mutual Funds: a 2026 Update
We update the mutual fund (MF) liquidity monitoring metrics introduced by Anadu and Cai (2019). We show that the median liquidity ratio for bank loan (BL) MFs has remained relatively stable in recent years, while the median illiquidity ratio is near levels last observed during the pandemic. This dynamic suggests increased liquidity transformation risk, on balance. To be sure, our measure captures only one dimension of illiquidity, rather than the full illiquidity profile of an MF’s portfolio.