SK Hynix surged past the US$1‑trillion market‑value mark on Wednesday, catapulting the South Korean memory‑chip giant into an elite club that until now only Samsung Electronics and Micron Technology have occupied. The rally, driven by an AI‑fuelled appetite for high‑end DRAM and NAND, lifted the Kospi to a historic high and sent the chipmaker’s share price up nearly 15 percent in a single session.
The milestone comes as demand for the memory that powers Nvidia’s AI accelerators, data‑centre servers and next‑generation smartphones outstrips supply, prompting a sharp price spike that has benefitted the world’s biggest semiconductor manufacturers.
AI‑driven demand pushes memory prices skyward
Memory‑chip prices have doubled in the first quarter of 2026 compared with the previous period, and analysts forecast another 63 percent surge this quarter as data‑centre spend eats into the already‑tight supply for laptops, cars and consumer gadgets. The squeeze has translated into record earnings for SK Hynix, Samsung and Micron, each reporting profit margins well above historic levels.
SK Hynix $1‑trillion market value fuels Kospi rally
The burst of optimism rippled through South Korea’s benchmark Kospi, which jumped 5.09 percent to an all‑time high of 8 457.09 points. The surge triggered a temporary “sidecar” curb that halted algorithmic trading, underscoring how tightly the market is tethered to the fortunes of its two memory giants.
| Company | Market value (USD) | Share price change | 2026 YTD performance |
|---|---|---|---|
| SK Hynix | $1.12 trillion | +14.9 % (intraday) | +215 % |
| Samsung Electronics | $1.00 + trillion | +8 % (record high) | +149 % |
| Micron Technology | $1.00 + trillion | +10 % (approx.) | +245 % |
The table makes clear that SK Hynix’s breakthrough not only lifts its own valuation but also anchors half of the Kospi’s total market capitalisation, cementing South Korea as the first non‑US nation with more than one trillion‑dollar company.
Analysts at Mirae Asset Securities expect the memory shortage to persist until at least 2028, keeping prices high. In a recent note, Kim Young‑gun raised target prices for SK Hynix and Samsung by 18.8 % and 14.6 %, respectively, reflecting confidence that demand will continue to outpace supply.
Broader market implications
UBS has more than tripled its price target for Micron, citing “the structural changes AI has driven to the entire memory complex”. Meanwhile, Samsung’s workers narrowly approved a tentative wage deal, averting a strike that could have disrupted global chip supplies at a critical juncture.
The AI boom has transformed the memory market into a high‑stakes arena where price volatility directly impacts technology rollout timelines. Car manufacturers eyeing autonomous‑driving platforms, laptop makers racing to embed AI features, and cloud providers expanding GPU farms are all feeling the ripple effects of the memory crunch.
South Africa’s tech sector, which relies heavily on imported semiconductors, is watching these developments closely. With local data‑centre operators planning multi‑petabyte expansions, the cost of memory chips will influence the pricing of cloud services and the competitiveness of home‑grown AI startups.
Looking ahead, the sustained surge in memory prices could spur investment in alternative memory technologies, such as MRAM and emerging 3D‑stacked solutions, as manufacturers seek to diversify supply chains and reduce reliance on a narrow set of producers.
The market’s current trajectory suggests that SK Hynix’s entry into the trillion‑dollar club is more than a headline—it signals a structural shift in the global semiconductor landscape, with AI acting as the catalyst that reshapes supply‑demand dynamics for years to come.