Samsung Navigates Brutal Seoul Selloff as AI Memory Milestones Stack Up
23.06.2026 - 16:38:09 | boerse-global.de
A wave of profit-taking slammed South Korea's equity markets on Tuesday, triggering a circuit breaker on the KOSPI as investors cashed out of red-hot tech names. Samsung Electronics bore the brunt, its shares tumbling 12.31 percent to close at 310,000 KRW. The rout erased a chunk of the year's stellar gains — the stock still sits 141 percent above its January level — but left the company's underlying AI-driven business momentum largely unscathed.
HBM4 Revenue Crosses the Billion-Dollar Mark
Even as the market convulsed, Samsung confirmed a critical milestone: cumulative revenue from its new HBM4 high-bandwidth memory chips has topped $1 billion. Mass production of these advanced components began only in February, and the ramp-up has been swift. Management expects HBM4 revenue to surpass $1.2 billion by the end of June, with a full-year target of $10 billion.
The customer list reads like a who's who of artificial intelligence: Nvidia, AMD, Google, Amazon, Microsoft, Meta, and Broadcom. Samsung is already supplying chips for Nvidia's next-generation Vera Rubin platform and has dispatched samples of its 12-layer HBM4E modules.
The strategic importance of the HBM business was underscored by chairman Jay Y. Lee's visit to the Cheonan production facility — his first since 2023. The site handles the complex backend packaging of memory modules, and the trip signaled management's focus on securing leadership in the broader HBM market, which is projected to reach $54.6 billion by 2026. Seoul is backing the effort with plans for a multi-billion-dollar semiconductor cluster in Gwangju, aimed at easing capacity constraints around the capital.
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UFS 5.0 Doubles Smartphone Storage Speeds
Alongside its HBM push, Samsung announced a breakthrough in mobile storage. The industry's first UFS 5.0 memory, built on its ninth-generation V-NAND technology, delivers a transfer rate of 10.8 gigabytes per second — double the speed of the previous generation. Power consumption has been cut by more than 40 percent through intelligent circuitry that deactivates unused areas, reducing heat buildup in devices.
The new chip is also about 17 percent smaller than its predecessor, freeing up space for larger batteries or extra sensors in future smartphones. Samsung plans to offer capacities up to one terabyte and will start mass production in the fourth quarter of 2026, targeting both smartphones and XR headsets.
The storage breakthrough reflects the broader trend of on-device AI requiring faster, more efficient memory. Samsung's stock had already priced in some of that potential: earlier this month, the shares traded at 353,500 Won, a 492 percent gain over the previous twelve months. Tuesday's selloff pulled them well below that level, though the stock still holds a more than 11 percent premium over its 50-day moving average of 277,770 KRW.
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Technical Picture and Outlook
The correction has left Samsung's shares roughly 17 percent below the 52-week high of 374,500 KRW, which was set just last Friday. The relative strength index now sits at 48.9, placing the stock in neutral territory — neither overbought nor oversold. Annualized volatility stands at a punchy 88 percent, suggesting more turbulence ahead before the market finds its footing.
Yet the operational narrative remains compelling. HBM4 revenue is accelerating, UFS 5.0 opens a new product cycle, and the company's long-term strategic bets on AI hardware continue to attract top-tier customers. Investors may be taking profits now, but the underlying engines of growth are still running at full throttle.
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