CoreWeave, a startup that rents out Nvidia's artificial intelligence chips to other companies, said Wednesday that it closed a 650millionsecondarysharesale,withCiscoandPureStorageinvestingalongsidefinancialinstitutions.Inthetransaction,CoreWeave′sexistingstakeholdersaresellingsharestooutsideinvestors.BloombergreportedlastmonththatCoreWeavewastargetinga23 billion valuation for the deal, up from 19billionina1.1 billion investment round announced in May.CoreWeave is go ...