Primary bond market

Barclays rate strategists believe the 10-year part of the Treasury curve has room to cheapen. "In that case, tax-exempts will likely not only follow, but underperform."

Municipal bond mutual funds saw inflows as investors added $528.7 million to funds after $674.1 million of inflows the week prior, according to LSEG Lipper. This marks seven straight weeks of inflows.

Underwriting spreads rose to $7.11 in the first half of 2024 from $3.70 in the first half of 2023.

The Investment Company Institute reported $839 million of inflows into municipal bond mutual funds for the week ending Aug. 7 after $442 million of outflows the week prior. Exchange-traded funds saw $680 million of inflows after $950 million of inflows the previous week.

"There's an important 'date certain' the market may overreact to, but by and large, [this] week is looking positive given a lighter new- issue calendar," said AllianceBernstein strategists.

Dallas Fort Worth International Airport received a S&P rating upgrade and a positive rating outlook from Moody's ahead of a $750 million bond sale next week.

"After a long-period of muni yields not being that attractive relative to corporates, that's starting to shift," Charles Schwab's Cooper Howard said.

Muni returns so far in August are in the black, with the Bloomberg Municipal Index at 0.53% this month and 1.04% year to date. High-yield continues to outperform with returns at 0.68% in August and 5.99% in 2024.

The past several trading sessions have seen "crazy volatility," said Jennifer Johnston, director of research of municipal bonds at Franklin Templeton.

Thursday's pricing of senior revenue bonds comes after Fitch Ratings upgraded the airport's subordinate debt.