DRAM’s 49% weighting in South Korean stocks creates pricing gaps for U.S. investors during Seoul’s closed session.
The Roundhill Memory ETF (DRAM) has amassed $10.38 billion in assets since its April 2, 2026 launch, surging 90% alongside a 105% return for Micron Technology (MU) in the same period. However, nearly half of DRAM’s holdings are South Korean equities, which cease trading at 3 p.m. Seoul time, leaving U.S. investors exposed to overnight volatility without the ability to react.
Micron’s Q1 2026 revenue reached $14 billion, up 57% year over year, with Cloud Memory gross margins at 66%, while the iShares Semiconductor ETF (SOXX) returned 58%. DRAM’s outperformance reflects its concentrated exposure to Micron and Korean memory stocks, but this structure introduces significant gap risk during earnings or macroeconomic news from Korea.
The fund’s heavy reliance on Samsung and SK Hynix—two of Korea’s largest memory companies—amplifies cyclical risks, particularly during periods of rapid mean reversion in semiconductor markets. DRAM added over $1 billion in a single day on May 8, highlighting its rapid growth but also its structural vulnerability to after-hours price swings.