** Shares of heating, ventilation and air conditioning firm Madison Air Solutions' MAIR.N up 1.6% at $32.34 premarket, a day after NYSE debut
** The HVAC firm secured a valuation of $15.65 bln in its debut trading day on the NYSE on Thursday
** Stock opened at $32 apiece vs IPO price of $27, and raised $2.23 bln on Wednesday, signaling persistent demand for equipment required to maintain data centers amid the AI boom
** The offering was the largest U.S. IPO so far this year and the biggest in the industrials sector since United Parcel Service UPS.N in 1999, per Renaissance Capital
** MAIR has about 489 mln shares outstanding as of market close on April 16, per LSEG data
(Reporting by Tharuniyaa Lakshmi in Bengaluru)
((tharuniyaa@thomsonreuters.com))