The memory chip sector experienced a significant downturn in pre-market trading, with the DRAM ETF falling over 5%. This follows commentary from SanDisk's CEO, David Goeckeler, who projected a sharp, mid-teens percentage decline in both PC and smartphone shipments for 2026. While the company reported strong results in its data center segment driven by AI demand, the negative outlook for the major consumer electronics markets appears to be raising concerns about overall NAND and DRAM demand, weighing on the broader sector.