Marvell Technology (MRVL) Plunges on Amazon and Microsoft Chip Fears: What Investors Should Know Before the Market Opens on December 9, 2025
Marvell Technology, Inc. (NASDAQ: MRVL) just endured one of its most volatile sessions of the year. On Monday, December 8, 2025, the AI‑infrastructure chip maker gapped lower at the open, sold off hard through the day, and slipped a bit further after the closing bell as investors digested a cluster of negative headlines around Amazon, Microsoft and the S&P 500 index. Here’s a detailed look at what happened to Marvell stock after the bell on December 8, and what matters most before the U.S. market opens on Tuesday, December 9, 2025. Key Takeaways How Marvell Stock Traded on December 8,