Stocks making the biggest moves midday: 3M, Northrop Grumman, Halliburton, CoreWeave and more found 2025 › Apr › 22 (Tue) @ 17:45 UTC a story from CNBC › Top News Northrop Grumman ■ Halliburton ■■ CoreWeave ■■ preview These are the stocks posting the largest moves in midday trading.