SynopsisSK Hynix’s rise to South Korea’s most valuable listed company reflects a long-term bet on HBM chips that became central to the AI boom. Backed by early investment and Nvidia demand, the company transformed from a struggling memory maker into a global semiconductor leader.ETMarkets.comSK Hynix rode AI memory demand to market leadership.SK Hynix's rise to become South Korea's most valuable listed company marks the culmination of a long-term strategy centred on high-bandwidth memory (HBM) chips, a niche technology that has become indispensable in the artificial intelligence boom.The company's journey began in 2012 when SK Group acquired Hynix Semiconductor in a deal widely viewed at the time as risky due to the semiconductor industry's cyclical nature. Back then, Samsung Electronics dominated the memory chip market and was valued at more than ten times SK Hynix.Seeking to differentiate itself, SK Hynix focused on developing HBM chips, a specialised type of memory capable of transferring data at significantly higher speeds than conventional DRAM. Although the company introduced the world's first HBM product in partnership with AMD in 2014, it struggled with the second generation of the technology and briefly considered abandoning the project, Reuters reported, citing former company executives.Instead, SK Hynix intensified its investment in HBM technology, revamping production capabilities and expanding manufacturing capacity in anticipation of future demand from Nvidia, which was then primarily known for graphics processors rather than AI chips. The company invested about 880 billion won in packaging facilities and related assets, a move that initially appeared unsuccessful as demand weakened in 2019 amid a slump in cryptocurrency mining and slower orders from Nvidia.The fortunes of the investment changed dramatically after the launch of OpenAI's ChatGPT in late 2022 triggered a surge in demand for AI infrastructure. HBM chips became a critical component in Nvidia's AI accelerators used for training and running large AI models, allowing SK Hynix to emerge as Nvidia's primary HBM supplier.The company's ascent has not been without setbacks. Founded as Hyundai Electronics in 1983, it faced severe financial distress during the early 2000s as collapsing memory prices pushed it toward bankruptcy. The company was rescued by creditor banks after failed attempts to sell the business, including an unsuccessful proposal involving Micron Technology.The acquisition by SK Group in 2012 was met with scepticism from credit rating agencies, which warned about the semiconductor sector's high capital requirements and earnings volatility. However, SK Group viewed the acquisition as an opportunity to move beyond commodity memory products and build a leadership position in advanced semiconductors.Former executives told Reuters that SK Hynix deliberately pursued HBM because competing directly with Samsung in conventional DRAM would have been difficult. The strategy eventually helped the company recover more quickly than its rival from the industry's cyclical downturn.After reporting a record annual operating loss of 7.73 trillion won in 2023 amid collapsing memory prices, SK Hynix rebounded sharply in 2024 with record operating profit. The company briefly overtook Samsung as the world's largest DRAM maker in 2025, driven by strong demand for AI memory chips.Industry experts told Reuters that SK Hynix's success represents a rare instance of a challenger overtaking an established market leader in the capital-intensive semiconductor industry, with HBM serving as the key differentiator.Samsung is now working to narrow the gap in HBM technology. While its foundry division manufactures key components for HBM chips, SK Hynix relies on Taiwan Semiconductor Manufacturing Co. to produce the base dies used in its products.SK Hynix's strong performance has also boosted South Korea's stock market and broader economy. The company is preparing a U.S. share listing, potentially as early as August, to expand its global investor base.The company's shares have surged more than 340% this year, surpassing even the long-term ambitions outlined by SK Group Chairman Chey Tae-won. On Monday, SK Hynix briefly became South Korea's most valuable listed company with a market capitalisation approaching 2.1 quadrillion won, although subsequent market volatility saw Samsung regain the top position by Wednesday.Read More News on(What's moving Sensex and Nifty Track latest market news, stock tips, Budget 2025, Share Market on Budget 2025 and expert advice, on ETMarkets. Also, ETMarkets.com is now on Telegram. For fastest news alerts on financial markets, investment strategies and stocks alerts, subscribe to our Telegram feeds .) Subscribe to ET Prime and read the Economic Times ePaper Online.and Sensex Today. 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