SK Hynix's 30% Surge Caps a Week of Whiplash — and It Wasn't Just the Nvidia Deal
Published on 07/31/2026 at 21:02 | Redaktion boerse-global.de
The most violent single-session rally in SK Hynix's recent history didn't come from a blockbuster earnings print or a product launch. It came from a chairman's personal checkbook — and a $500 billion partnership that had been sitting in the background.
Shares of the South Korean memory-chip giant hit their daily trading limit on Friday, soaring 29.95% to 1,718,000 won. The move capped a week that had seen the stock battered by a paradox: record quarterly results that somehow still fell short of Wall Street's expectations.
The Two Catalysts Behind the Limit-Up
Two forces converged to trigger the historic rebound. First, SK Group and Nvidia formalized an infrastructure partnership valued at over $500 billion, centered on building a 2-gigawatt AI cloud facility in South Korea. SK Hynix will supply high-bandwidth memory (HBM) chips and co-developed specialty components for the project, giving the company something analysts had begun to doubt: visibility into multi-year demand.
Second, and perhaps more striking, was the signal sent by SK Group chairman Chey Tae-won. On July 30, Chey purchased 3,620 common shares through the exchange — his first-ever personal purchase of his own company's stock. At the previous day's closing price of 1,322,000 won, the investment came to roughly 4.79 billion won, or about 3.3 million euros.
Should investors sell immediately? Or is it worth buying SK Hynix?
The size was no accident. Had the purchase exceeded 5 billion won, Chey would have been required to file a 30-day advance notice with regulators. By keeping it just under that threshold, he was able to transmit his confidence to the market immediately, without delay. Market participants read the move as a statement of responsible leadership after weeks of heavy selling.
A Record Quarter That Initially Fell Flat
The sell-off that preceded Friday's explosion was rooted in numbers that looked spectacular on the surface. SK Hynix reported second-quarter 2026 revenue of 79.32 trillion won, up 257% year over year. Operating profit surged 557% to 60.54 trillion won, pushing the operating margin to a record 76%. Net income came in at 93.92 trillion won — more than twelve times the prior-year figure.
But a closer look revealed the cracks. Roughly 63.3 trillion won of that net income came from revaluations and sales of equity stakes, primarily the company's holdings in Japanese chipmaker Kioxia — not from core operations. And while the operational performance was exceptional, revenue still landed about 5% below analyst expectations of nearly 84 trillion won. The combination of missed estimates and questions about the sustainability of one-off gains sent the stock tumbling at the start of the week.
A Historic Day for the Entire Korean Market
Friday's rally wasn't confined to SK Hynix. The KOSPI index jumped nearly 18% — the largest single-day gain in its history — as investors rotated back into semiconductor names following a week marked by violent selling and multiple trading halts.
Despite the dramatic rebound, SK Hynix shares remain 42.48% below their 52-week high of 2,987,000 won, set in June. The relative strength index of 44.7 suggests the stock is no longer oversold but hasn't yet entered overbought territory either. Year to date, the shares are still up an impressive 164.43%.
SK Hynix at a turning point? This analysis reveals what investors need to know now.
What's Next: HBM4 Ramp and Capacity Expansion
Looking ahead, the company's immediate priority is HBM4, its next-generation high-bandwidth memory. Initial shipments began in the second quarter, with the full production ramp scheduled for the second half of 2026. In parallel, SK Hynix is starting mass production of LPDDR6 memory, which promises 33% higher throughput than its predecessor.
To support this growth, the company plans roughly $31 billion in capital expenditures this year, partly funded by its recent Nasdaq listing of ADRs. The money will flow into new packaging facilities and the Yongin semiconductor cluster. Management says the company is already largely sold out through 2027 — a statement that, combined with the Nvidia pact and Chey's personal stake, may finally give investors the long-term conviction they were looking for.
Ad
SK Hynix Stock: New Analysis - 31 July
Fresh SK Hynix information released. What's the impact for investors? Our latest independent report examines recent figures and market trends.
Disclaimer regarding our articles: No investment advice, no buy or sell recommendation. Information on prices, companies, and markets is provided without guarantee; changes are possible at any time. Stock market transactions can lead to substantial losses. Our articles are created and reviewed in whole or in part automatically with the support of AI.
