SK Hynix Shatters Records on Two Fronts as HBM4E Samples Ignite a 300% Annual Surge
19.06.2026 - 04:55:23 | boerse-global.de
SK Hynix has delivered a double-barreled milestone this week: its own stock price hit an all-time high while the broader KOSPI index breached the 9,000-point mark for the first time in history. The catalyst? The delivery of first samples of its next-generation HBM4E memory chips to marquee clients — chips purpose-built for the artificial intelligence processors that are reshaping the tech landscape.
The shares climbed to 2,685,000 won on Thursday, a single-day gain of 6.51%, before powering ahead to a fresh record of 2,891,000 won on Friday. Year-to-date, the stock has surged roughly 297% through Thursday and pushed past 325% by the end of the week — a threefold increase that has left even the most bullish analysts scrambling to update their models.
A Technological Leap That Justifies the Hype
The new 12-high HBM4E chips are no incremental upgrade. Built on sixth-generation 10-nanometer DRAM, each chip packs 48 gigabytes of capacity and delivers a data transfer rate of 16 gigabits per second per pin. Energy efficiency has improved 20% versus the previous generation, while thermal resistance has dropped 17% — a feat achieved through a proprietary packaging technology called MR-MUF.
These chips are destined for the highest-performance AI accelerators on the market: Nvidia's forthcoming Rubin Ultra platform and AMD's MI500 series. SK Hynix commands a 58% share of the HBM segment and is determined to widen the gap. Rival Samsung shipped similar samples in May, but the market is placing its bets on the leader.
Should investors sell immediately? Or is it worth buying SK Hynix?
Foreign Capital Floods In — But the Broader Market Tells a Different Story
International investors have been on a buying spree, pumping net 86.3 billion won into SK Hynix shares on Thursday alone. Over five trading days, cumulative net inflows hit nearly 3.8 trillion won. Yet the broader Korean market has seen net outflows of 892 billion won from foreign accounts in the same period. The selective nature of the buying is jaw-dropping: on the day the KOSPI hit its record, only 127 stocks finished higher while 769 declined.
The message from global capital is clear: the AI memory boom is a winner-take-most game, and SK Hynix is holding the strongest hand.
Technical Tension and What Comes Next
The ferocity of the rally has pushed the stock into overbought territory. The relative strength index hit 72 on Thursday and rose to 75 by Friday — both readings that typically signal exhaustion in the short term. Annualized 30-day volatility stands at 97%, underscoring the violent pace of repricing. The stock now trades 65% above its 50-day moving average, a level that historically has preceded pullbacks.
SK Hynix at a turning point? This analysis reveals what investors need to know now.
Still, some analysts argue the fundamental case remains intact. Discounted-cash-flow models suggest the shares are undervalued even after the 300% run. The next catalyst is concrete: SK Hynix is already preparing for mass production of the HBM4E chips in 2027, with infrastructure projects such as the Yongin semiconductor cluster and the M15X production line designed to deliver scale on schedule.
On the capital markets front, the company is pursuing a Nasdaq listing through an ADR program. The SEC is currently reviewing the application, and the target window is between late July and August 2026. With its market capitalization now approaching 90% of rival Samsung Electronics, a direct U.S. listing would give SK Hynix access to deeper pools of capital — and a new narrative for the next leg of this remarkable run.
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SK Hynix Stock: New Analysis - 19 June
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