DRAM Prices Surge 700% Over Four Years as Samsung, SK hynix, and Micron Face Antitrust Lawsuit
A federal court in the Northern District of California has recently accepted a class-action antitrust lawsuit accusing the three largest memory manufacturers—Samsung, SK hynix, and Micron—of coordinating cuts to DDR3 and DDR4 production under the justification of rapidly growing AI-driven demand for high-bandwidth memory (HBM). The plaintiffs allege that this coordinated supply reduction caused DRAM prices to surge by approximately 700% over the past four years.
According to the complaint, since 2022, the three companies have collectively redirected roughly 25% of their DRAM wafer capacity toward HBM production, where gross margins are estimated to be three to five times higher than conventional DRAM. Although global DRAM wafer capacity is expected to increase by 14% in 2026, effective capacity allocated to conventional DRAM is projected to rise by only 10%, further widening the supply-demand gap.
The plaintiffs argue that the three manufacturers could have simultaneously expanded conventional DRAM production to address the market shortage but instead chose to prioritize higher-margin HBM products. The lawsuit characterizes this strategy as a new form of "coordinated output restriction." It also cites Apple's recent price increases for iPads and Macs as evidence that upstream memory supply constraints are being passed on to end consumers and seeks treble damages.
Background: Supply Remains Concentrated Despite Rising Prices
The Global DRAM Market Is Dominated by Three Suppliers
The global DRAM market is dominated by Samsung, SK hynix, and Micron, largely because the industry is highly capital-intensive, technology-intensive, and driven by economies of scale.
Manufacturing DRAM requires enormous investments in fabrication facilities while continuously advancing process technology, node scaling, yield management, and manufacturing integration. These factors create exceptionally high barriers to entry. Moreover, DRAM is a highly standardized product whose pricing is strongly influenced by cyclical supply-demand dynamics. Previous industry downturns led to significant earnings volatility, forcing less competitive manufacturers to exit the market or consolidate. As process complexity and capital requirements have continued to increase, industry concentration has become even higher.
Although ChangXin Memory Technologies (CXMT) has expanded aggressively in recent years and emerged as the largest DRAM supplier outside the three market leaders—making rapid progress in certain mainstream product segments—the combined market share of Samsung, SK hynix, and Micron still exceeds 80%, leaving the industry highly concentrated.
In Taiwan, Nanya Technology and Winbond also manufacture DRAM, but they primarily focus on specialized applications and collectively account for only a single-digit share of the overall market.
AI Demand Has Shifted Capacity Toward HBM
DRAM is valued for its high-speed read/write performance and high-bandwidth data transfer capabilities, making it essential for CPUs, GPUs, smartphones, PCs, servers, automotive electronics, and numerous consumer devices.
However, the rapid expansion of AI has made HBM an indispensable component of AI servers, offering significantly higher profitability than conventional DRAM. Consequently, Samsung, SK hynix, and Micron have increasingly prioritized HBM production.
Producing 1Gb of HBM also consumes approximately two to three times more wafer capacity than manufacturing standard DDR5, further reducing available capacity for traditional DRAM products. As a result, non-AI applications are forced to compete for increasingly limited production capacity, contributing to a prolonged structural supply imbalance.
HBM Capacity Expansion Pushes Up Prices Across Non-AI Memory Markets
As conventional DRAM capacity has tightened, supply shortages have become increasingly evident in market pricing.
According to TrendForce, server DRAM contract prices increased by 50% to 55% quarter over quarter in the second quarter of 2026, exceeding the annual price adjustment typically seen in HBM within a single quarter.
Looking over a longer period, commercial DRAM prices have risen approximately 700% since 2022.
Consumer memory products have experienced similar increases:
- Mobile DRAM prices for smartphones rose 78% in a single quarter.
- SSD prices for notebook PCs doubled within one year.
- Even lower-capacity automotive DRAM, traditionally considered relatively stable and less technologically demanding, has increased by more than 50%.
These trends indicate that memory supply has tightened across virtually every end market.
Past Downturns Continue to Shape Conservative Capacity Expansion
Despite today's supply shortages, the industry's painful experience during previous market cycles continues to encourage cautious capacity expansion.
Between 2018 and 2021, demand for data centers, cloud computing, 5G smartphones, and pandemic-driven PC purchases fueled rapid growth in DRAM consumption. Expecting demand to remain strong, Samsung, SK hynix, and Micron launched large-scale capacity expansion projects while customers aggressively built inventories.
However, beginning in the second half of 2022, pandemic-related demand faded, PC and smartphone shipments slowed, inventories rose sharply, and end-market demand weakened.
Because building and ramping a DRAM fabrication plant typically requires two to three years, capacity investments initiated around 2020 entered production precisely as demand began falling, resulting in severe oversupply and collapsing prices.
By 2023, inventory pressure remained elevated, factory utilization rates stayed low, and DRAM prices fell to roughly one-third of their previous peak. Industry profitability deteriorated significantly:
- Micron reported negative gross margins for multiple consecutive quarters.
- SK hynix recorded annual losses approaching KRW 7.7 trillion.
- Samsung's semiconductor division also suffered substantial losses of approximately KRW 15 trillion.
Having experienced these significant losses, memory manufacturers remain reluctant to repeat another oversupply cycle. Even with current market tightness, they continue to prioritize profitability and supply-demand discipline over aggressive capacity expansion.
Assessing the Impact: A Complex Case With Limited Near-Term Implications
The market reaction following the lawsuit has been relatively muted, likely for two primary reasons.
1. DRAM Supply Imbalances Have Multiple Causes
The outcome of the lawsuit ultimately depends on whether the court concludes that the three companies intentionally conspired to restrict supply and manipulate prices.
However, the imbalance in the DRAM market stems from numerous factors rather than supplier behavior alone. On the demand side, AI remains in the early stages of rapid expansion, creating exceptionally strong demand for computing power and memory. Some customers are willing to pay substantial price premiums to secure supply, naturally reducing availability for other end markets. Under these conditions, higher prices may simply reflect normal market dynamics rather than deliberate price manipulation.
On the supply side, the memory industry has historically experienced pronounced boom-and-bust cycles. Manufacturers have repeatedly suffered from excessive capacity expansion followed by sharp price declines. As a result, even during today's upcycle, suppliers remain cautious about adding capacity in order to preserve profitability and maintain healthier market balance.
Meanwhile, tightening supply and price increases for mature products such as DDR3 and DDR4 can also be viewed as a natural consequence of product migration toward newer memory technologies rather than definitive evidence of collusion.
2. Major Antitrust Cases Typically Take Years to Resolve
Past antitrust cases demonstrate that such litigation often takes many years to conclude. Plaintiffs generally require extensive time to gather evidence and establish monopoly or collusive behavior. Even after an initial ruling, defendants frequently appeal, extending the legal process further. Many major antitrust cases have lasted more than five years.
Consequently, investors are likely to remain more focused on ongoing memory shortages and pricing trends than on a lawsuit whose final resolution may not arrive for several years.
| Case | Defendant(s) | Industry | Primary Allegation | Duration | Outcome |
|---|---|---|---|---|---|
| IBM Antitrust Case | IBM | Mainframes and computer systems | The U.S. government alleged IBM maintained a monopoly through exclusionary practices, including software bundling and pricing strategies. | ~13 years | DOJ ultimately withdrew the case without requiring a breakup. |
| Microsoft Browser Case | Microsoft | Operating systems, browsers, software | DOJ alleged Microsoft abused Windows' market dominance to suppress competition. | ~3–4 years | Settled in 2001 without a breakup; Microsoft was required to modify certain licensing and exclusionary practices. |
| DRAM Price-Fixing Case | Samsung, SK hynix, Micron (cooperated with investigations) | DRAM memory | Manufacturers were accused of coordinating prices and exchanging pricing information between 1998 and 2002. | ~4 years | SK hynix pleaded guilty in 2005 and paid a US$185 million fine; Samsung paid a US$300 million fine the same year. |
| LCD Price-Fixing Case | AU Optronics and other LCD manufacturers | Displays | LCD manufacturers allegedly coordinated TFT-LCD panel prices through long-running meetings. | Over 5–6 years | AU Optronics was fined US$500 million in 2012, and several former executives received prison sentences. |
| U.S. Google Search Antitrust Case | Search, search advertising, browser distribution | DOJ alleged Google maintained its search monopoly through default search agreements, exclusive contracts, and revenue-sharing arrangements. | ~5 years | In 2025, the court's remedies included prohibiting certain exclusive search agreements and requiring Google to provide portions of its search data and advertising services to competitors. |
Conclusion
Overall, while the latest antitrust lawsuit reflects growing market concern over rapidly rising DRAM prices and the production allocation strategies of Samsung, SK hynix, and Micron, the underlying causes extend well beyond supplier behavior alone. The current market dynamics are the result of multiple factors, including accelerating AI demand, HBM capacity expansion, tighter conventional DRAM supply, lessons learned from previous industry cycles, and manufacturers' continued emphasis on disciplined capacity growth.
Whether the court ultimately determines that Samsung, SK hynix, and Micron engaged in illegal collusion will depend on years of evidence gathering, industry analysis, and legal proceedings. Based on historical precedent, major antitrust cases often take many years to resolve and are therefore unlikely to have a material impact on industry fundamentals or company operations in the near term.
Instead, investors are expected to remain focused on whether memory shortages persist, whether HBM continues to displace conventional DRAM production, and how rising DRAM prices ultimately affect the profitability of the three leading memory manufacturers and the broader semiconductor cycle.
