After a one-week blip that showed some positive growth last week - following two prior weeks of outflow activity - tax-exempt money market funds returned to negative territory, losing $4.11 billion and settling with total assets of $492.47 billion for the week ending Nov. 17, according to the Money Fund Report.

Last week, the funds gained $1.59 billion and ended with total assets of $496.58 trillion. By comparison, the funds, ended the week of Nov. 3 with $494.99 billion, down $914 million, and ended the week of Oct. 27 with $495.91 billion, down $1.96 billion.

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