** Shares of AI infrastructure companies gain premarket after Nvidia's NVDA.O quarterly results
** Iren IREN.O up 3.5%, Nebius NBIS.O shares gain 7.6%, Coreweave CRWV.O up 4.1%, and Applied Digital APLD.O jumps 10.5%
** Nvidia reported first-quarter revenue of $81.62 billion, beating analysts' average estimate of $78.86 billion, according to data compiled by LSEG
** On an adjusted basis, the firm earned $1.87 per share, compared with market estimates of $1.76
** Shares of Nvidia NVDA.O edged up just 0.3% premarket
(Reporting by Tharuniyaa Lakshmi in Bengaluru)
((tharuniyaa@thomsonreuters.com))