$Roundhill Memory ETF(DRAM.US)is a concentrated fund tracking memory chipmakers, with heavy weights in SK Hynix (~24%), Samsung (~25%), and Micron (~24%). It serves as the main pure-play vehicle for the DRAM/HBM sector driven by AI infrastructure demand.

In mid-July, it dropped sharply. On July 13, SK Hynix shares in Seoul plunged more than 15%, its largest one-day decline in nearly two decades, dragging South Korea’s Kospi down ~9% (triggering a trading halt). US ADRs fell ~8%, peers like Micron dropped 6%+, and the $Roundhill Memory ETF(DRAM.US) saw multi-percent declines amid sector selling. This followed SK Hynix’s blockbuster Nasdaq ADR debut around July 10, which raised over $26 billion and initially fueled enthusiasm.

The main triggers were profit-taking and nuanced guidance rather than collapsing demand. After a parabolic rally earlier in 2026 (the ETF had roughly doubled in weeks at one point on AI memory enthusiasm), investors took gains post-listing. SK Hynix faced analyst revisions on near-term expectations. Key factors included a shift toward multi-year Long-Term Agreements (LTAs) with customers, which stabilize revenue but moderate the aggressive near-term price-hike assumptions previously modeled on spot volatility. SK Hynix’s much higher HBM (High Bandwidth Memory for AI) exposure, around 58% of recent revenue versus lower shares at peers, meant it benefited less from the recent surge in conventional DRAM prices. There was also some caution around the pace of HBM4 ramps. Broader worries about new capacity coming online in 2027–2028 potentially easing the current supply crunch added pressure, alongside high valuations and questions about AI capex durability across semis.

@Captain's Treasure