Assets invested in money market mutual funds grew to $592.57 billion, a 1.2% gain, in the weel ended Sept. 7, the Investment Company Institute reported.

The increase, from 4585.54 billion the previous week, covered all categories: taxable and tax-exenot funds for both retail and institutional investors.

On the retail side, assets jumped $5.04 billion, to $425.01 billion.

That included $331.99 billion in taxable funds, a $2.99 billion rise, and $93.02 billion on tax-exempt funds, a gain of $2.05 billion.

Institutional money funds picked up $1.99 billion in assets, to close the week at $167.56 billion.

Taxable funds held $144.77 billion of the total, a $1.42 billion increase. Tax-exempt funds were up $572.3 million, to $22.79 billion.

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