Reddit surged on an OpenAI alliance. AMD rose on a report that Microsoft Azure will offer customers access to its AI chips.
The market rally had a quiet Thursday, holding near record highs. Walmart and Tesla rival BYD flashed buy signals, joining Nvidia.
The Dow Jones Industrial Average, a laggard among the major U.S. stock indexes this year, got its moment in the spotlight on Thursday as it briefly broke above 40,000 points for the first time in its history.