Secondary bond market

Despite munis being mixed Thursday, the muni AAA yield curve remains inverted, said Taylor Huffman, a client portfolio manager at PTAM.

"While supply has been outsized over the last several weeks, the market has also seen outsized reinvestment demand over the last several months," said Nuveen strategists.

This week again sees elevated supply, as issuance sits at $9.673 billion, with Tuesday being a very busy day.

The initial reaction was a little bit a flight-to-quality trade in rates, which is supportive of USTs and munis as safe-haven assets do well during times of uncertainty, said Chris Brigati, senior vice president and director of strategic planning and fixed income research at SWBC.

The new-issue calendar is at $9.7 billion the week, led by the Texas Transportation Commission with $1.7 billion of first-tier and second-tier revenue refunding bonds.

Municipal bond mutual funds saw inflows as investors added $891.4 million to funds after $775.3 million of inflows the week prior, according to LSEG Lipper.

Single party control of a state eases perception of bond default risk associated with laws like Chapter 9, a study found.

Issuance has remained robust over the past two weeks, with Wednesday being a particularly busy day.

Volume is predicted to continue at "robust levels," possibly through the fourth quarter, said Matt Fabian, a partner at Municipal Market Analytics.

Financial markets are trying to "absorb" the outcome of higher odds of Trump winning in November, said James Pruskowski, chief investment officer at 16Rock Asset Management.