Tax-free money market funds continued to see positive growth for the week ending March 17, gaining $5.225 billion, though down from last week's $7.251 billion, according to Money Fund Report, a service of imoneynet.com.

As a result, total assets of the 549 tax-free money market funds in the report grew to $488.31 billion, up slightly from $483.09 billion last week.

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