Arm Holdings Stock (NASDAQ: ARM) News Today: Goldman Downgrade, AI Momentum, and Fresh 2026 Forecasts (Dec. 18, 2025)
Arm Holdings plc stock is having one of those “welcome to modern markets” weeks: the long-term AI narrative is still alive and well, but short-term sentiment has turned skittish as analysts debate valuation, Arm’s next strategic move, and what parts of the AI boom Arm actually captures. As of the latest available quote early Thursday, Dec. 18, 2025, Arm Holdings plc (NASDAQ: ARM) traded around $114.58, down about 5.4% from the prior close. Below is what’s driving the move, what Wall Street is forecasting now, and the big catalysts (and landmines) investors are watching next. Why Arm stock is moving