South Korean memory chipmaker SK Hynix has achieved a remarkable turnaround, surpassing Samsung Electronics in market value after a decade-long strategic bet on high-bandwidth memory (HBM) chips, a technology that has become critical for artificial intelligence (AI) infrastructure. The milestone marks a shift in the global semiconductor industry, where AI demand is reshaping business.
The transformation began after SK Group acquired the financially troubled Hynix Semiconductor in 2012. Rather than focusing solely on traditional DRAM memory products, the company invested heavily in HBM technology, a specialized memory architecture designed to deliver significantly higher data transfer speeds for AI processors and accelerators. At the time, HBM was considered a niche product with uncertain commercial prospects, Reuters news report said.
SK Hynix’s strategy paid off when generative AI applications, led by ChatGPT and other large language models, triggered an unprecedented surge in demand for AI servers. HBM became an essential component in advanced AI chips, particularly those produced by NVIDIA, making SK Hynix a key supplier to the booming AI ecosystem.
The company’s strong position in HBM has fueled exceptional financial performance. SK Hynix posted record profits in 2024 and temporarily overtook Samsung in global DRAM market share during 2025. Its shares surged more than 340 percent in 2026, enabling it to briefly become South Korea’s most valuable listed company with a market capitalization of approximately 2,082.5 trillion won, surpassing Samsung’s 2,081.3 trillion won.
SK Hynix has continued to strengthen its technology leadership by shipping samples of its next-generation 12-layer HBM4E memory chips to major customers. The new chips deliver speeds of up to 16 gigabits per second per pin and improve power efficiency by more than 20 percent compared with previous generations, reinforcing the company’s advantage in the AI memory market.
Samsung, meanwhile, is accelerating efforts to regain momentum in the AI memory segment. The company has started supplying advanced HBM4 chips to customers and is investing heavily in AI-related semiconductor technologies. Samsung also remains the world’s largest NAND flash memory manufacturer and continues to benefit from strong AI-driven demand across its semiconductor portfolio.
The AI boom is also prompting broader investment across South Korea’s semiconductor industry. The South Korean government is discussing new large-scale semiconductor investments with Samsung and SK Hynix, including potential new chip manufacturing clusters to support growing global demand for AI infrastructure. Officials believe AI-driven semiconductor demand could accelerate capacity expansion plans by more than a decade.
SK Hynix’s rise from a struggling memory manufacturer to an AI chip powerhouse underscores how strategic investments in emerging technologies can reshape industry leadership. As AI adoption continues to expand worldwide, competition among SK Hynix, Samsung, and other memory chip makers is expected to intensify, with HBM technology remaining at the center of the next phase of semiconductor innovation.