Christian Lamarco, a little-known stock researcher and short seller, warned about financial and personal problems at Nvidia in May.

Ukraine and Russia agreed to a large-scale prisoner swap following the second round of U.S.-mediated talks in Abu Dhabi on Wednesday.

The House has turned aside a resolution to impeach Defense Secretary Pete Hegseth. The vote Tuesday halted an effort to remove Hegseth as Pentagon chief for his conduct in office and his handling of the war in Iran.

The Nvidia CEO was the target of an alleged espionage operation, but he and his company are central to the AI boom.