Jessica Lerner

"The trend of heavy issuance that began last year has continued in the first half of 2025, surpassing even our rather optimistic expectations," said Barclays strategists Mikhail Foux, Grace Cen and Francisco San Emeterio.

The selloff highlights the lack of accurate pricing and credit information across the speculative-grade muni market.

So far, the financial market reaction has been limited, said Paul Christopher, head of global investment strategy at Wells Fargo Investment Institute.

With one full week of June left and the end of the second quarter approaching, the week was "a sort of Groundhog Day for municipal yields," said Kim Olsan, senior fixed income portfolio manager at NewSquare Capital.

The FOMC's decision to "hold rates steady while signaling only two cuts this year was a subtle but powerful shift," said James Pruskowski, CIO at 16Rock Asset Management.

The rock-bottom prices show the risks of a high-yield market where liquidity is famously limited.

"We expect no change to rates but [for the Federal Open Market Committee] to continue to signal that rate cuts should still be expected," said Cooper Howard, a fixed income strategist at Charles Schwab.

In the first quarter of this year, 18.6% of new-issue volume in the market was traded electronically, up from 17.3% last year, according to data from Coalition Greenwich.

After two weeks of a deluge of issuance, supply drops off "given the FOMC meeting and Juneteenth holiday, so we expect investors will refocus on the secondary market and look to scoop up any value left behind in the wake of the issuance onslaught," said Birch Creek strategists.

Issuance takes a bit of a breather due to the Juneteenth holiday and the Federal Open Market Committee meeting, Barclays strategists said.