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SK Hynix shares soared to an all-time high on Tuesday, riding a wave of renewed investor confidence in artificial intelligence infrastructure and fresh momentum from developments tied to fellow memory chipmaker SanDisk. The South Korean semiconductor giant saw its Seoul-listed stock surge as much as 9%, briefly touching 1,128,000 won — a level never previously reached by the company.
The rally followed a strong performance on Wall Street the previous session, where technology stocks broadly advanced on sustained enthusiasm for AI-driven growth. Investors have continued to pour into semiconductor names with direct exposure to data center expansion, and SK Hynix sits at the center of that trend as one of the world's leading producers of high-bandwidth memory chips. HBM is a critical component in the AI processors powering today's most advanced machine learning systems, making SK Hynix a go-to name for investors seeking exposure to the AI hardware buildout.
Adding fuel to the climb was news that SanDisk is set to join the Nasdaq 100 index, a development that typically triggers automatic buying from passive investment funds tracking the benchmark. Given the deepening collaboration between SK Hynix and SanDisk, positive sentiment around one company has increasingly begun to lift the other.
The two firms are jointly working to establish an industry standard for High Bandwidth Flash, an emerging memory technology designed to work alongside HBM in next-generation AI systems. HBF aims to address longstanding scalability and efficiency challenges in large-scale AI deployments, particularly as inference workloads grow more demanding across data centers globally.
Analysts view the partnership as strategically significant, positioning both companies to capitalize on what many expect to be the next major hardware cycle in artificial intelligence. For SK Hynix, Tuesday's record close underscores its growing stature as a cornerstone supplier in the global AI supply chain.
