Assets of money market mutual funds grew a scant 0.09%, to $1.191 trillion in the week ended June 17, the Investment Company Institute reported.

Inflows to taxable portfolios for institutional investors accounted for the rise. These funds attracted $4.07 billion in the week, closing with $427.14 billion.

Tax-exempt funds for institutional investors shed $723 million, ending at $42.81 billion.

On the retail side, investors yanked a net $870 million from taxable money funds, which ended the week with $588.96 billion.

Tax-exempt portfolios were off $1.57 billion, to $132.49 billion.

The institute, a Washington-based trade group for mutual fund companies, bases its findings on a weekly survey of more than 1,000 money market funds.

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