Assets invested in money market mutual funds jumped 0.79% to $1.028 trillion in the week ended Aug. 20, the Investment Company Institute reported.

The gains, which were across the board, were most pronounced in portfolios for institutional investors, which gained 1.34% to close the week at $351.33 billion. That includes $314.75 billion in taxable funds and $36.59 billion in tax-exempt funds.

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