Assets of money market mutual funds fell 1.3%, to $809.01 billion, in the week ending April 17, according to the Investment Company Institute.

The decline stemmed from a selloff in both retail and institutional accounts.

Assets in retail money funds fell $6.95 billion to $568.51 billion by week's end.

That includes $460.27 billion in taxable retail portfolios, down $4.35 billion, and $108.24 billion in tax-exempt portfolios, a decline of $2.6 billion.

On the institutional side, assets fell $3.68 billion, to $240.5 billion.

Taxable institutional funds held $215.35 billion, a decline of $2.09 billion in the week, while tax-exempt portfolios fell $1.59 billion, to $25.15 billion.

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