Assets of money market mutual funds slipped 0.6%, to $653.72 billion, in the week ended April 26, the Investment Company Institute reported.

The decline was concentrated in funds for retail investors. Assets of these funds totaled $462.35 billion, off $4.11 billion in the week.

That total includes $369.18 billion of taxable retail funds, down $1.61 billion, and $93.17 billion of tax-exempt funds, down $2.5 billion.

On the institutional side, assets grew $378.7 million, to $191.37 billion. Taxable funds held $168.94 billion, a gain of $764.5 million, while tax-exempt funds held $22.43 billion, down $385.8 million.

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