Fitch

Long-term liabilities have gone down and revenues have gone up, Fitch said.

Both ratings agencies cited the health system's improved liquidity in recent years.

"The upgrade is supported by strengthened debt service coverage ratios due to better than expected recovery from the pandemic," Fitch said.

The criteria should result in a nearly equal number of upgrades and downgrades in the next half year, according to the rating agency.

"The upgrades incorporate our view of New Hampshire's improved economic and demographic growth trends that continue to perform near or above those of the U.S. and regional peers," said analyst Thomas Zemetis.

Set to be priced by Jefferies on Monday for retail investors and on Tuesday for institutions, New York City's tax-exempt general obligation bond deal is tentatively structured in four series with two subseries.

Separately, Fitch raised Orlando's $159.87 million of Series 2017A senior tourist development tax revenue bonds, 6th-cent contract payments, to A from BBB.

"This upgrade from Fitch reflects the continued growth of confidence in the MTA's sustainable financial strength, bringing tangible benefits when we look to finance critical transit projects," said MTA Chair and CEO Janno Lieber.

Fitch said its upgrade "reflects the removal of the asymmetric additional risk relating to potential general fund exposure to the county's enterprise sewer system … which reflects the system's recent restructuring of its outstanding debt."

Stronger-than-expected economic numbers could boost bond issuance.