Secondary 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.

"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.

"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.

Recent events have been a "roundtrip" for rates, starting with the sentiment shifting from slowing inflation to a softening labor market, said James Pruskowski, chief investment officer at 16Rock Asset Management.

This week's new-issue calendar will be "outsized," said Anders S. Persson, Nuveen's chief investment officer for global fixed-income, and Daniel J. Close, Nuveen's head of municipals.

All eyes now turn to the September Federal Open Market Committee meeting where the Fed is expected to cut rates, but market participants are mixed on whether it will be a 25- or 50-basis-point cut.

Municipal bond mutual funds saw inflows as investors added $1.112 billion to funds after $892.2 million of inflows the week prior, according to LSEG Lipper.