Key Highlights
SK Hynix achieved a historic milestone on Wednesday, surpassing a $1 trillion market cap, with its stock soaring over 12% to reach a peak of 2.28 million won (approximately $1,514.38).
This remarkable surge brought the overall market valuation of the memory chip manufacturer to approximately 1,624 trillion won, equivalent to $1.08 trillion.
This achievement makes SK Hynix the second company in South Korea to reach this market cap, following Samsung Electronics, which achieved this milestone earlier this month.
Dan Ives, Managing Director at Wedbush Securities, succinctly commented on Tuesday when including SK Hynix in his IVES ETF: “They are in the winner's circle.”
High Bandwidth Memory Technology Drives Pricing Power
The synchronized rise of these three industry leaders stems from a common catalyst: High Bandwidth Memory (HBM) technology.
HBM chips are critical components in AI processors, and as AI training operations and inference workloads expand at an unprecedented pace, demand for them has surged significantly.
This severe supply constraint has led to price increases across the industry, directly boosting the profit margins of these three manufacturers.
SK Hynix and Samsung maintain strategic supply agreements with market-leading AI accelerator technology provider Nvidia.
A Historic Month for the Memory Semiconductor Industry
May 2026 marks a significant period for the memory chip industry.
Samsung was the first to reach a $1 trillion market cap. Micron achieved this milestone on Tuesday, while SK Hynix completed this trio on Wednesday.
SK Hynix is now the third Asian company to achieve a $1 trillion market value, following Samsung and TSMC, which has a market cap exceeding $2 trillion and remains the most valuable company in Asia.
Meanwhile, Micron has risen to become the 11th largest publicly traded company in the United States.
This stock has become a key catalyst for growth in the semiconductor industry this year, setting record performances for the S&P 500 and Nasdaq Composite indices.
Year-to-date in 2026, SK Hynix's stock price has increased over 248%. Samsung's increase is around 165%, while Micron has risen over 210% during the same period.
These extraordinary gains come on the heels of an already strong performance in 2025, when SK Hynix delivered returns exceeding 200%.