Secondary bond market

Historically, "September and, to a lesser degree, October have not been kind to municipal investors."

Refinitiv Lipper reported $798.474 million was pulled from municipal bond mutual funds in the week ending Wednesday after $407.976 million of inflows into the funds the previous week.

California and the Port Authority of New York and New Jersey held one-day retail order periods for $1 billion-plus issues.

Investors remain hesitant about "jumping back into munis even as rates are nearing multi-year highs as tax-exempts are still not cheap enough with the front-end ratios still yielding under 70% while the historical averages are around 90%," AmeriVet Securities' Jason Wong noted.

The calendar will rebound with an estimated $7.141 billion next week with $6.323 billion of negotiated deals on tap and $817.6 million on the competitive calendar.

Refinitiv Lipper reported $407.976 million of inflows from municipal bond mutual funds for the week ending Wednesday after $534.428 million of outflows into the funds the previous week.

"We've seen more buyer attention at this time of the year versus what we generally would experience as we approach the beginning of September," said Morgan Stanley's Matthew Gastall.

Over the last month or so there's been some volatility in the muni market driven by the Treasury side, said Daryl Clements, municipal portfolio manager at AllianceBernstein.

Andy DeVries of CreditSights is fairly optimistic about the eventual outcome for bondholders, though its tax-exempt paper has been trading at a discount.

The muni market "finally succumbed to the month-long rate selloff that had seen valuations test historically rich levels," said Birch Creek Capital strategists in a weekly report.