Premarket movers: Palo Alto, General Mills, Medtronic dip as Norwegian Cruise Line, Masimo surge
U.S. stock futures edged lower as market participants returned from the holiday and absorbed a fresh batch of corporate updates. Notable premarket movers included declines at Palo Alto Networks, General Mills and Medtronic, while Norwegian Cruise Line and Masimo posted sharp gains amid activist stake reports and takeover chatter.