Assets of money market mutual funds rose 0.92%, to $1.374 trillion, in the week that ended Dec. 2, the Investment Company Institute reported.

Balances in funds for retail investors rose 1.01%, to $816.99 billion. That included $642.08 billion of taxable funds, up $6.08 billion, and $144.92 billion of tax-exempt funds, up $2.06 billion.

On the institutional side, balances rose 0.80%, to $570.08 billion. Taxable funds held $520.18 billion of that total, up $2.42 billion. Tax- exempt funds held $49.90 billion, up $2.12 billion.

The institute, a Washington trade group for mutual fund companies, based its findings on a weekly survey of more than 1,600 money market fund share classes.

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