On May 8, 2026, investors weighed ad-tech growth against margin pressure, cautious guidance, and fresh Wall Street downgrades.

Stock Market Today: The Dow Jones index dipped, as the Nasdaq sold off. Tesla stock pulled back while Nucor rallied.

POET jumped after addressing a short report and clarifying PFIC-related tax issues, bringing relief to investors focused on governance risks while leaving its commercialization timeline and capital needs in focus.

The Dow Jones Industrial Average and other key indexes wavered for most of Wednesday's session and most edged lower by the close. Rallies spurred by a surprisingly strong January jobs report largely faded. On the upside, data center cooling equipment ...