Assets invested in money market mutual funds jumped 1.34%, to $1.0818 trillion, in the week that ended Dec. 3, the Investment Company Institute reported.

The increase, which affected all categories of money funds, was most pronounced in portfolios for institutional investors. These funds held $377.16 billion, up 2.18% in the week. That includes $337.07 billion in taxable funds, up $5.39 billion, and $40.09 billion in tax-exempt funds, up $2.67 billion.

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