The Roundhill Memory ETF (DRAM) experienced a significant 24-hour plunge of 5.02% intraday, reflecting sharp downward pressure on memory-related stocks.

The decline is attributed to broad foreign selling in South Korean equity markets, with key ETF components like Samsung Electronics and SK Hynix among the largest contributors to the market drop. Samsung Electronics, a major holding, fell as much as 5.1% amid investor concerns over ongoing wage negotiations with its labor union and the potential for a strike, which could disrupt operations.