The inflows this year come at a time when, historically, money funds see seasonal outflows. Ho calculates about $5.5 trillion of the assets sitting in money market funds are core liquidity for companies and cash savings for retail investors. In fact, the most recent push into money market funds is coming from institutional investors, according to the ICI. Assets of institutional money market funds increased by $33.06 billion to $3.65 trillion, while retail money market funds rose by $8.62 billion to $2.35 trillion, the organization found. That's because yields on money market funds lag behind Fed moves.

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Persons: Teresa Ho, Ho, Powell, Shelly Antoniewicz, Jerome Powell, AllianceBernstein, Monika Carlson, Carlson, Amy Arnott, Arnott, Rob Williams, Charles Schwab Organizations: JPMorgan, Investment Company Institute, Federal Reserve, CNBC, ICI, Fed, Treasury, Morningstar, Charles, Charles Schwab Center, Financial Research Locations: Treasurys