Rothschild & Co Redburn recently started coverage of Nebius Group (NBIS) and CoreWeave (CRWV), rating both stocks a sell. It argues that GPU rental prices will fall as hyperscalers build more of their own capacity and financing gets costlier. People in the industry seem to have a different view. In a recent interview, Nebius Chief Revenue Officer Marc Boroditsky said the company has four customers ready to sign for every GPU and turns away about 75% of demand. SemiAnalysis’s Jordan Nanos added that CoreWeave told a $100 million customer to wait until May 2027. This shows how significant the supply constraint is right now. According to Nanos, many of those customers are ending up at Nebius instead.