Oracle (ORCL) stock fell as much as 15% Thursday after the tech firm's quarterly AI costs rose ahead of Wall Street's expectations and its revenue fell short. Oracle reported capital expenditures of 12billionforitsfiscalsecondquarterafterthebellWednesday,upfromabout4 billion the previous year and the roughly 8billionprojectedbyanalyststrackedbyBloomberg.TheAIcloudplayeralsohikeditsguidanceforfullyearcapitalexpendituresto50 billion from its prior $35 billion estimate ...