The April 2026 scoreboard for AI infrastructure stocks is in, and the gap between the leaders is wider than most expected. Marvell Technology (NASDAQ:MRVL) stock ran away with the month, posting a 67% gain from the March 31 close of $99 to the April 30 close of $165.15. Arm Holdings (NASDAQ:ARM) stock finished second with ... ARM, Marvell, or Vertiv: Which AI Infrastructure Stock Crushed It in April?