Secondary bond market

"While there has been some reported buying by relative value institutions amid higher ratios from the muni-centric price correction, the market as a whole may not rally this week," said Matt Fabian, a partner at Municipal Market Analytics.

Municipals are little changed to start the week after last week's selloff, which saw muni yields cut up to 20 basis points out long.

March had been expected to be difficult due to a "combination of heavy supply, low redemptions, rate volatility, tax-related selling and now fund outflows," said Barclays strategists Mikhail Foux and Grace Cen.

After digit-double cuts out long Wednesday, muni yields rose an additional two to four basis points, depending on the curve, on Thursday.

"The supply/demand dynamic is a headwind for the muni market this week as supply is expected to be elevated," said Cooper Howard, a fixed income strategist at Charles Schwab.

"The ever-shifting narrative regarding President Trump's tariff policies is throwing fuel on the fire of unpredictability," said SWBC's Chris Brigati.

The market rally "took a bit of a breather last week, with yields rising across the curve," said Daryl Clements, a portfolio manager at AllianceBernstein.

"March is not an overly positive month for munis, but a lot will depend on U.S. Treasuries," said Barclays strategist Mikhail Foux.

"Markets fixate on one risk at a time, and there's no shortage right now. Volatility has spiked, liquidity is thin, and buyers are sidelined — but that's temporary," said James Pruskowski, chief investment officer at 16Rock Asset Management.

Issuance remains heavy this week, but while it's elevated, the muni market is "structurally undersupplied," meaning if 2024's record level of $500 billion-plus of issuance was doubled, the market could still digest it quite well, said Wesly Pate, a senior portfolio manager at Income Research + Management.