The rapid expansion of artificial intelligence is reshaping the global semiconductor industry, bringing memory chips back to the center of the technology ecosystem after years of being overshadowed by system semiconductors and AI accelerators.
In a symbolic milestone for the sector, Micron Technology surpassed a $1 trillion market capitalization for the first time as investors increasingly bet on a long-term boom in AI-driven memory demand.
Industry observers say Micron’s sharp rise reflects more than company-specific momentum. Instead, it is widely viewed as a signal that the global memory semiconductor market may be entering a new supercycle fueled by explosive investment in AI infrastructure and data centers.
The development is also drawing attention because Micron is emerging as a stronger strategic competitor to Samsung Electronics and SK hynix, backed by aggressive U.S. semiconductor policies and deep access to American capital markets.
Micron shares surged on Wall Street on May 26 (local time), pushing the company’s valuation above the $1 trillion threshold as investors responded to expectations of tightening memory supply and rising DRAM prices driven by AI demand.
The market’s focus is increasingly centered on the structural expansion of memory consumption in AI systems. As competition intensifies among global technology companies developing generative AI services and large language models, hyperscale data center investment continues to accelerate.
At the same time, the amount of high-performance memory installed per server is rapidly increasing, leading to sustained growth in demand for DRAM and NAND flash products.
In particular, high-bandwidth memory (HBM) has emerged as a critical component for AI computing performance, significantly strengthening the pricing power and strategic importance of memory manufacturers.
Industry analysts say the market structure is also evolving. Unlike past semiconductor cycles characterized by severe oversupply and sharp price collapses, long-term supply agreements and AI-driven demand visibility are helping stabilize profitability across the sector.
The changing landscape is also benefiting South Korean chipmakers. Samsung Electronics and SK hynix remain dominant suppliers in the global DRAM market, and rising memory prices are expected to further improve earnings momentum.
Brokerages in Korea have recently raised target prices for both companies, arguing that a broader valuation rerating of the memory sector may already be underway. SK hynix, in particular, is expected to remain one of the biggest beneficiaries of the AI boom due to its leading position in the HBM market.
At the same time, Micron’s rapid ascent presents a new competitive challenge for Korean semiconductor companies.
As the only major U.S.-based memory semiconductor manufacturer, Micron has become a central player in Washington’s efforts to strengthen domestic semiconductor supply chains. The company is benefiting from government subsidies, tax incentives, and expanded support for advanced semiconductor investments under U.S. industrial policy initiatives.
Industry experts note that access to abundant U.S. capital market liquidity may also give Micron an advantage in financing large-scale facility expansion and next-generation R&D programs.
“In the AI era, competitiveness depends not only on GPUs but also on memory performance for storing and processing enormous amounts of data,” one semiconductor industry official said. “Micron surpassing the $1 trillion mark symbolizes the return of memory semiconductors to the center of the technology market.”
The official added that while Samsung Electronics and SK hynix still maintain advantages in manufacturing scale and technology leadership, Micron’s expansion — backed by U.S. government support — could reshape competitive dynamics in ways not seen in previous semiconductor cycles.
Market analysts expect strong conditions in the memory industry to continue as long as global AI infrastructure investment remains aggressive. As a result, competition among the world’s three major memory companies is expected to intensify further in the years ahead.
A securities industry official said Micron’s milestone could also support valuation upgrades for Korean semiconductor companies, but added that investors will increasingly focus on AI memory competitiveness, Samsung Electronics’ labor stability, and the company’s ability to regain share in the HBM market.
