Why SK Hynix Stock Surged 8% After Nvidia’s Earnings Beat
South Korean semiconductor giant SK Hynix saw its stock price soar 7.96% to close at 1,099,000 won on Wednesday, February 26, 2026, leading the KOSPI index to break through the historic 6,300 barrier. The rally came on the heels of Nvidia’s blockbuster quarterly earnings announcement, which showcased the surging global demand for AI infrastructure and the critical role of high-bandwidth memory (HBM) in powering next-generation computing.
Nvidia’s Results Light the Fuse
The primary catalyst for SK Hynix’s impressive gain was Nvidia’s fiscal fourth-quarter earnings report, released after U.S. markets closed on Tuesday. The AI chipmaker posted revenue of $68.13 billion for the quarter ended January, representing a 73% year-over-year increase and exceeding Wall Street’s consensus estimate of $66.2 billion. For the full fiscal year, Nvidia’s revenue surpassed $200 billion for the first time in the company’s history.
Nvidia’s stellar performance underscores the explosive growth in AI data centers and GPU-accelerated computing, which rely heavily on advanced memory solutions. As Nvidia’s primary supplier of HBM3E chips—the cutting-edge memory technology that powers AI training and inference workloads—SK Hynix stands as a direct beneficiary of this megatrend.
HBM3E: The Crown Jewel of AI Memory
SK Hynix has established itself as the undisputed leader in the HBM market, particularly with its fifth-generation HBM3E product. Industry analysts estimate that SK Hynix commands over 50% of the global HBM market share, with virtually all of its HBM3E production committed to Nvidia through 2026.
The company announced in early January that HBM3E would remain the dominant product in the AI-driven memory market throughout 2026, even as preparations begin for the transition to HBM4. This technological leadership has translated into pricing power and premium margins, with HBM products commanding prices several times higher than conventional DRAM.
Wall Street Raises the Bar
Following the Nvidia earnings beat and continued strength in AI semiconductor demand, Macquarie Securities significantly raised its price target for SK Hynix to 1.7 million won from previous levels. The brokerage cited the company’s dominant position in HBM, its expanding production capacity, and the potential for sustained margin expansion as key factors supporting the bullish outlook.
SK Hynix has committed approximately $15 billion to expanding its HBM production capacity, positioning itself to capture an even larger share of what analysts project will be a nearly $1 trillion total semiconductor market by 2027. The company’s Icheon and Cheongju fabrication facilities are undergoing major upgrades to meet the surging demand from hyperscale cloud providers and AI chip manufacturers.
Broader Market Impact
The semiconductor rally extended beyond SK Hynix on Wednesday. Samsung Electronics, which is racing to catch up in the HBM market, gained 7.13% to close at 218,000 won. The broader KOSPI index surged 3.67% to 6,307.32, marking a gain of more than 200 points in just one trading session.
Institutional investors, primarily through exchange-traded fund purchases, were net buyers of 1.25 trillion won worth of Korean equities, signaling strong conviction in the country’s chipmaking champions. The rally pushed South Korea’s stock market capitalization past France, cementing its position among the world’s top equity markets.
What This Means for Investors
SK Hynix’s stock surge reflects more than just a single quarter’s results from a key customer. It represents a fundamental shift in the semiconductor industry, where memory has evolved from a commodity product into a strategic enabler of the AI revolution. With HBM3E production sold out through 2026 and HBM4 ramping in 2027, SK Hynix appears well-positioned to sustain elevated profitability for the foreseeable future.
However, investors should monitor several key risks: potential slowdown in AI capital expenditures, competition from Samsung and Micron in next-generation HBM, and geopolitical tensions that could disrupt supply chains or market access.
For now, the market is betting that the AI boom has significant runway ahead—and SK Hynix is riding in the driver’s seat. Wednesday’s rally may be just the beginning of a longer re-rating as the company transitions from a cyclical memory maker to a critical infrastructure provider for the age of artificial intelligence.
Want deeper analysis of Korean tech stocks and emerging market trends? Subscribe to the ko2u.com newsletter for weekly insights delivered to your inbox.