The Roundhill Memory ETF (DRAM) experienced a 24-hour plunge of 6.06%, reflecting a significant downturn for the memory chip sector over the past day.

The sharp decline was primarily triggered by SK Hynix's formal announcement of a five-year plan to double its wafer capacity across all product lines, including high-bandwidth memory (HBM), DDR5, and 3D NAND. This signal of massive future supply additions prompted investors to take profits, especially given the sector's overheated sentiment following a substantial year-to-date rally where the broader semiconductor index had already surged over 50%.

Broader industry concerns also contributed to the negative sentiment. Analysts have cautioned about the sustainability of the current memory super cycle, noting that while demand remains strong, the extreme concentration of demand from artificial intelligence (AI) data centers is creating critical supply-demand imbalances and cost pressures that could eventually undermine broader market health.