Why the KORU 3X South Korea Bull ETF Is Surging as SK Hynix Rips on HBM4 News

The Direxion Daily MSCI South Korea Bull 3X Shares (NYSEARCA: KORU) surged about 15% intraday on Tuesday as Korean memory chipmakers rebounded, driven by SK Hynix’s latest HBM4 milestone tied to NVIDIA. The move closely mirrored Monday’s drop, when a downgrade related to SK Hynix fixed-price HBM contracts hurt the same trade. By midday Tuesday, KORU traded around $481, up from Monday’s close of $419.19, reflecting the fund’s objective to amplify daily moves of an index heavily weighted toward Samsung Electronics and SK Hynix. The catalyst was SK Hynix: its Nasdaq-listed ADR (SKHY) jumped roughly 22%, rising from $152.35 to about $186.53 after the company confirmed it began mass production and shipment of 12-layer HBM4 to NVIDIA’s next-generation Vera Rubin AI platform. Per TradingKey, the deliveries were the first with final specifications that passed NVIDIA quality certification, with volume set to expand from September. Additional same-session drivers included new SKHY options activity, Barclays initiating coverage of Overweight, and a reported early-stage evaluation by Samsung regarding its own U.S. ADR listing.