The South Korean chipmaker’s crossing of the US$1 trillion valuation threshold is less a market event than a verdict: on AI infrastructure, on memory’s indispensability, and on Asia’s enduring centrality to the global tech stack.
On Wednesday, May 6, Samsung Electronics crossed a threshold that few companies in history have reached. Its market valuation topped US$1 trillion after shares more than quadrupled over the past year on booming demand for chips used in artificial intelligence, making it only the second Asian company to enter that club, after Taiwan Semiconductor Manufacturing Company.
The company had first briefly touched the US$1 trillion mark on February 26, according to FactSet data, before pulling back. Wednesday’s rally, a surge of more than 15% in Seoul trading, putting the stock on course for the biggest single-day advance in Samsung’s history, made it definitive. The number stuck.
The ripple effects were immediate. Samsung’s gain boosted the Kospi benchmark by more than 6%, driving it above the 7,000 level for the first time. Global investors bought a net 3.1 trillion won (US$2.1 billion) worth of Kospi shares on Wednesday alone, with the South Korean won climbing more than 1% against the dollar to become the day’s best-performing currency in Asia.
Local media cited a deal between Interactive Brokers and Samsung Securities allowing US investors direct access to purchase Korean stocks as a catalyst for the foreign inflow. The milestone did not arrive in a vacuum.
The rally followed Samsung’s record first-quarter earnings. Operating profit surged more than eightfold to 57.2 trillion won, while revenue climbed to a record 133.9 trillion won. Samsung’s first-quarter operating profit also topped its full-year 2025 profit of 43.6 trillion won. To put that more plainly: Samsung earned more in three months than it did across the entirety of last year.
At the centre of this earnings surge is high-bandwidth memory, or HBM, the specialised chips that sit inside the AI accelerators powering data centres globally. Samsung announced in February that it had started mass-producing HBM4, the newest and sixth generation of the technology, with those chips expected to power Nvidia’s forthcoming Vera Rubin AI architecture.
Samsung also anticipates that its HBM sales will more than triple in 2026 compared to 2025, and is expanding production capacity accordingly. The HBM market itself is operating under conditions of profound structural tightness. Samsung and SK Hynix together control approximately 90% of global HBM production, a concentration that has turned memory from a commodity business into something closer to a strategic chokepoint.
Gartner forecast DRAM prices to increase by 47% in 2026 due to significant undersupply in both traditional and legacy DRAM markets. That supply constraint is what investors are pricing in. As Dave Mazza, chief executive of Roundhill Investments, put it: “The trillion dollar threshold carries material weight beyond the symbolism. It reflects a market judgment that memory’s role in the AI infrastructure stack is structural, not cyclical.”
Sam Konrad, investment manager at Jupiter Asset Management, offered a similarly measured read of the opportunity ahead: “If investors do some work on Samsung Electronics we think they will conclude that the investment opportunity is attractive even if they have missed its performance up until now. The memory market is currently undersupplied, and Samsung said that 2027 will see tighter supply and demand than 2026, so prices for NAND and DRAM are likely to continue rising.”
Still, Samsung’s path to this point was not without friction. SK Hynix still commands an estimated 55% of the HBM market to Samsung’s roughly 25%. Samsung spent much of 2024 and early 2025 working to recover ground lost to its domestic rival in the HBM race, a gap that cost it a significant share of Nvidia’s supply chain during a period of extraordinary demand.
Samsung co-CEO Jun Young-hyun acknowledged the challenge at the company’s New Year address earlier this year, while noting that customers had begun signalling a change: “On HBM4 in particular, customers have even stated that ‘Samsung is back.'”
The turnaround narrative is gaining traction beyond memory. Apple has been in exploratory discussions with Samsung over potentially manufacturing processors for Apple devices in the United States, a move that would give Apple a secondary production option beyond longtime chip supplier TSMC.
Intel has also been named in those discussions. For Samsung’s foundry division, which has struggled to close the gap with TSMC in advanced logic manufacturing, a production relationship with Apple would be a significant win.
Samsung, alongside memory peer SK Hynix and TSMC, sits at the heart of a transformation that has made Asia a cornerstone of the global AI ecosystem, pairing chipmaking dominance with expanding data infrastructure. That framing matters for the region. South Korea’s benchmark index has now gained 76% in 2026, following an equally strong advance in 2025–its best annual showing since 1999.
Mirae Asset Securities analyst Seo Sang-young told Reuters the Kospi could reach 10,000 by year-end if AI chip demand holds. Today, Samsung joins a list of only 13 companies worldwide to have reached or crossed the trillion-dollar mark, including Nvidia, Apple, Microsoft, Amazon, Alphabet, Meta, Broadcom, Tesla, Walmart, Berkshire Hathaway, and Saudi Aramco.
In a company like that, the milestone reads as more than a stock price. It is a verdict on where the infrastructure of the next computing era is being built, and by whom.