Money market mutual fund assets rose by a whopping $23.1 billion, or 3%, in the week ending Jan. 11, lifting the total to $787.1 billion.

Money market funds for retail investors picked up $14.06 billion of the gain, a record one-week inflow for these portfolios, said the Investment Company Institute, which tracks the data. Assets in these funds jumped to $547.78 billion. Institutional assets rose $9.04 billion, to $239.32 billion.

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