U.S. stock indexes opened higher on Tuesday despite optimism over the possibility of tariff relief for the auto sector waned on signs of new levies on pharma and semiconductor imports.

Federal Register filings showed the Trump administration was proceeding with probes into imports of pharmaceuticals and semiconductors as part of a bid to impose tariffs on both sectors.

Tech shares mixed. Netflix up 2%; Nvidia up 1%; Apple down slightly, Tesla down 1.6%.