Money market mutual fund assets fell $38.91 billion for the week ending June 18, according to the Investment Company Institute.

On the institution front, assets of the 1,179 institutional-class shares decreased by $38.18 billion to $2.225 trillion. Assets of the 916 taxable shares declined $39.08 billion to $2.053 trillion; and assets of the 263 tax-exempt shares increased $891 million to $201.91 billion.

On the retail end of things, assets of retail money market funds lost $730 million to $1.221 trillion. Although assets of the 545 taxable shares grew by $280 million to $917.11, tax-exempt shares decreased by $1.01 billion to $304.07 billion.

The ICI reports money market fund assets to the Federal Reserve on a weekly basis. Revisions are based on changes in the number of funds reporting, data adjustments, as well as various reclassifications.

Total assets of money market mutual funds for the last four weeks were $3.476 billion for June 18, $3.515 billion for June 11, $3.520 billion for June 4 and $3.502 billion for the week ending May 28.

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