SK hynix has cemented its role as a core profit engine for SK Group after posting record results again in the fourth quarter of 2025. As demand tied to artificial intelligence accelerates, industry watchers say the group’s growth strategy is increasingly being reshaped around SK hynix, not just short-term earnings.
According to the industry on Tuesday, SK Group has secured about 80 trillion won through asset sales and business restructuring and is focusing that money on future growth areas such as AI and semiconductors. A large share is being spent on SK hynix, linking the group’s divestments directly to the chipmaker’s capital spending and efforts to strengthen its technology edge.
The funding push tracks SK hynix’s recent performance. From the first through third quarters of 2025, the company set new quarterly records for revenue and operating profit each quarter. Preliminary fourth-quarter results announced Tuesday also marked all-time quarterly highs for both revenue and operating profit, and full-year 2025 revenue and operating profit hit record levels as well. The steady rise has fueled views that the company has moved beyond a cyclical rebound into a more structural growth phase.
SK hynix is widely said to account for about 80% of SK Group’s operating profit. The group’s earnings base, once led by telecom and energy, is now increasingly anchored by semiconductors, pushing investment priorities toward SK hynix.
That shift is reflected in capital spending. SK hynix is expected to expand this year’s capital investment to the 30 trillion won range, aiming to get ahead of surging demand for high-value memory used in AI servers. The approach contrasts with past, more cautious moves tied to swings in the memory market, as the company prioritizes long-term market leadership over near-term profitability.
A key focus is high-bandwidth memory, or HBM. SK hynix is seeking to extend its lead from HBM3E into next-generation HBM4. It is widely reported to have signed supply deals with major big tech customers, including Nvidia, securing a significant share of HBM4 volumes. Some in the industry estimate it has more than half, with others putting the figure at about 70%.
Industry assessments attribute the momentum not only to pricing but also to mass-production yields, stable quality and supply reliability. SK hynix is also investing in early development for post-HBM4 products and strengthening joint validation and customized development with customers, aiming to position itself as a key partner in AI infrastructure rather than a simple supplier.
“SK Group’s money is flowing to hynix not because of short-term results, but because it has the clearest growth engine for the next 10 years,” an industry official said. “As long as it maintains leadership in HBM4 and the AI memory market, the group’s investment strategy is likely to keep revolving around hynix.”
* This article has been translated by AI.
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