Weekly reporting municipal bond mutual funds had a net outflow of $993 million during the period ending Dec. 17, AMG Data Services reported.
The results follow a $1.053 million outflow the previous week, and represents the 13th straight week of outflows after 27 consecutive weeks of inflows, according to the Arcata, Calif.-based fund tracker.
The four-week moving average for all muni bond funds - which includes the monthly reporters - moved to a $571.3 million outflow from a $422.9 million outflow.
Taxable bond funds that report weekly had a $1.1 billion net outflow, after a $416 million inflow the week before.
Weekly reporting equity funds had an inflow of $8.4 billion, after a $5.8 billion inflow the previous week.
