Micron Tumbles 5.6% Friday as Chinese DRAM Rival Spooks Memory Sector, Extending Weekly Loss to 10%

Micron Technology shares fell 5.63% on October 16, pushing the stock's weekly decline to roughly 10% and leaving it approximately 30% below its summer peak of more than $1,200. The catalyst was fresh concern over Chinese memory maker ChangXin Memory Technologies, known as CXMT, which reported progress on a denser DRAM chip architecture called 4F-squared, raising fears about long-term competitive pressure on AI-driven memory demand. SK Hynix fell 3% to $141.97 and SanDisk dropped 6.85% on the same day, while the Philadelphia Semiconductor Index declined 3.83% and the Nasdaq fell 2.15%, its worst week since June.

Goldman Sachs publicly called the China memory fears overblown, but the reassurance failed to reverse the selling. Barron's noted the stock has fallen below $1,000 and flagged growing buy-the-dip arguments among analysts, citing Micron's pricing strength, AI-driven demand, and management's view that supply constraints will persist through 2028. A Seeking Alpha analysis added that Micron's $35 billion share repurchase authorization becomes less restricted from December 2026, giving bulls a near-term catalyst.

Separately, Micron agreed to a $600 million settlement with Netlist, Inc., resolving a multi-year series of patent disputes. Under the deal, Micron receives a five-year license to Netlist's portfolio, which covers server DIMMs and High Bandwidth Memory. Sterne, Kessler, Goldstein and Fox represented Netlist before the U.S. International Trade Commission and the Federal Circuit. Also on October 14, Senior Vice President and Chief Legal Officer Michael Ray sold 6,328 MU shares in the company's first insider sale since late August, while ETFs were net sellers of the stock on the same day.

Despite the selloff, the broader AI memory investment thesis remains intact in analyst commentary. Micron had added $19 billion in market value on October 15 before Thursday's reversal, and long-term customer agreements are seen as improving revenue visibility. The next major read on whether the AI infrastructure trade recovers will come from upcoming earnings prints at Taiwan Semiconductor, AMD, and Nvidia.