After four straight weeks of significant inflow activity and record-high asset levels, municipal bond money market funds experienced outflows in the week ending June 2, according to the Money Fund Report, a service of of Westborough, Mass.

The 550 tax-free and municipal funds included in the report this week fell $7.21 billion to $513.7 billion. Last week, the funds took in $1.35 billion, surging to an all-time high of $520.9 billion.

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