U.S. municipal bond funds reported $663.6 million of net inflows in the week ended May 21, compared with $616.5 million in inflows in the previous week, according to data released by Lipper on Thursday.
_0">The four-week moving average remained positive at $549.2 million, said Lipper, a unit of Thomson Reuters.
High-yield muni bond funds reported inflows of $408.1 million, up from $348.3 million in the previous week.
(U.S. municipal bond team)