HBM triple-tier pattern takes shape: How are SK Hynix, Samsung, and Micron competing for AI memory pricing power?

By 2026, the global semiconductor industry is experiencing a structural transformation driven by generative AI, with high-bandwidth memory chips (HBM) at the core of this change. Under the dual influence of NVIDIA's Blackwell and Rubin platform accelerating iterations, and CSPs large-scale self-developing AI-specific chips, the HBM market is forming an oligopoly centered around SK Hynix, Samsung Electronics, and Micron Technology. Unlike traditional DRAM cyclical supply and demand battles, this round of HBM expansion features a combination of rapid technological generation upgrades, extremely scarce capacity, and sustained super-competitive pricing power. In this tug-of-war, how Micron, long ranked third, can transform from a follower to a challenger becomes a key question worth in-depth analysis.

Formation of the Three-Polar HBM Landscape: From Monopolistic Competition to Pyramid Hierarchy

According to the latest DRAM industry survey report released by market research firm TrendForce in June 2026, in the first quarter of 2026, Samsung held the top position with a 38.5% overall DRAM market share, with DRAM revenue reaching $37.32 billion, a quarter-over-quarter increase of 93.4%. Among them, Samsung's server DRAM revenue accounted for the largest share in the industry, with the highest overall ASP growth among peers. The second-ranked SK Hynix had a 28.8% overall DRAM market share, with quarterly revenue of $27.98 billion, up 62.5% quarter-over-quarter.

SK Hynix's HBM bit shipment ratio was the highest among the three major manufacturers; however, in 2026, structural declines in HBM contract prices suppressed the overall price increase of its products. Micron, ranked third, achieved DRAM revenue of $21.75 billion, up 81.6% quarter-over-quarter, maintaining a market share of 22.4%.

Focusing on the HBM segment, Counterpoint Research estimates that SK Hynix's market share of HBM4 in 2026 will be about 54%, Samsung about 28%, and Micron approximately 18%. TrendForce points out that SK Hynix can leverage its collaboration with NVIDIA on HBM to maintain an advantage in supply bit allocation, with an estimated HBM market share of about 50% for 2026; Samsung's HBM4 certification progress is the fastest, expected to complete mass production after certification in Q2, with an estimated market share of about 28% in 2026; Micron's share is around 22%.

This indicates that the current HBM market has already formed a clear layered oligopoly. SK Hynix, with its first-mover advantage, is in the top tier; Samsung, relying on aggressive capacity expansion and full-stack self-research capabilities in 1c DRAM, is accelerating its catch-up; Micron, with a relatively limited but irreplaceable share, is steadily increasing its presence, forming a stable "three-polar" pattern.

Leading Paths of Samsung and SK Hynix: Technological Generations and Capacity Expansion

Samsung's core strategy in 2026 focuses on large-scale deployment of 1c DRAM process nodes and the mass production push of HBM4. Samsung plans to increase its 1c DRAM monthly capacity to about 150k wafers by the end of 2026 for HBM4 mass production. Additionally, Samsung plans to build a new large-scale advanced DRAM production line at Pyeongtaek P4, with a target monthly capacity of about 120k wafers, approaching one-fifth of Samsung's current DRAM monthly capacity of 660k wafers. Based on this, the capacity related to HBM4 is expected to account for about a quarter of Samsung's total DRAM capacity. In terms of product generations, Samsung's HBM3E has been certified by NVIDIA, and HBM4 will start mass production after certification in February 2026, with shipments already underway. Samsung also plans to triple its total HBM output by 2026 compared to 2025, with more than half being HBM4.

SK Hynix is actively advancing its HBM4 and HBM4E mass production plans. Its 16-layer stacked HBM4 product reaches 48GB capacity, with overall bandwidth surpassing 2TB/s, utilizing MR-MUF advanced packaging technology and logic base chips manufactured by TSMC. The company also plans to promote mass production of HBM4 16-Hi, HBM4E (8/12/16-Hi), and customized HBM4E between 2026 and 2028. SK Group further states it will double wafer capacity over the next five years and reaffirms that "AI-driven storage chip shortages will persist until 2030."

In terms of cooling and advanced packaging, Samsung showcased a prototype of HBM5 at Computex 2026, introducing embedded copper-based thermal structures (HPB technology), aiming for mass production around 2028. SK Hynix has also announced its iHBM cooling technology, reducing thermal resistance by over 30%, with mass shipments expected between 2029 and 2030.

Micron's Path to Catch Up: From Laggard to Challenger

For Micron, the market focus is not just on short-term share competition but on whether it can complete the transformation from a "third place" to an "indispensable challenger."

From a capacity perspective, all of Micron's HBM capacity in 2026 has been fully sold out, and it plans to prioritize mass production of 1-gamma DRAM and HBM4. Management explicitly stated at the JPMorgan investor conference that the ramp-up speed of HBM4 mass production is about twice that of the previous HBM3E 12-High, indicating a significant improvement in Micron's capacity ramp-up efficiency. Additionally, the standard HBM4E products are scheduled to begin mass production ramp-up in 2027, combining 1-gamma DRAM with advanced logic base chips from TSMC to further lock in the next-generation AI accelerator market.

Technologically, Micron's HBM4 products adopt 1-beta (1β) process technology and self-developed CMOS base chips, which have entered volume shipment. The 36GB 12-layer HBM4 designed for NVIDIA's Vera Rubin AI platform has already begun mass delivery during GTC 2026. Market consensus expects Micron's HBM average selling price to increase by about 22% in 2026, the highest among the three major manufacturers. The high ASP growth indicates that its product differentiation path is being recognized by the market.

Furthermore, Micron has adjusted its strategic priorities—by the end of 2025, it will cease resource investment in consumer-grade Crucial brand products and fully shift talent toward high-margin AI enterprise memory solutions, with HBM becoming its core growth engine. This decision signifies a fundamental reshaping of Micron's business portfolio, shifting from a traditional model based on bulk consumer DRAM to focusing on AI server-grade memory products led by HBM.

Supply-Side Capacity Constraints and Pricing Power Battles

The uniqueness of the HBM industry lies in the fact that its pricing power depends not only on explosive demand but also on structural supply-side limitations.

TrendForce research shows that the proportion of HBM wafer output to total DRAM wafer output will increase from about 18% at the end of 2025 to approximately 22% by the end of 2026, and further to about 30% in 2027. Meanwhile, producing a certain amount of HBM bits consumes about three times the wafer capacity of standard DDR5, meaning that even if the three major manufacturers accelerate wafer output for HBM, supply elasticity remains severely constrained.

On the other hand, the three major manufacturers are leveraging their oligopolistic supply capacity to manage HBM prices within a controllable range. In Q1 2026, the wafer value of HBM single chips was overtaken by 64GB DDR5 RDIMM, and HBM's profit margin in that quarter was the lowest since its emergence, falling below high-end DDR5 server memory. The three manufacturers are negotiating long-term contract prices for HBM4 in 2027. TrendForce believes that, due to overall DRAM supply tightness, higher manufacturing difficulty of both new and old HBM generations, and higher unit costs, the three major players will significantly raise HBM prices in 2027, gaining clear pricing dominance in annual HBM negotiations.

On the client side, NVIDIA still accounts for about 60% of total HBM demand in 2026, but this is expected to drop to 48% in 2027, while CSPs like Google, AWS, and Microsoft will rapidly increase their self-developed AI chip share. The rising demand for customized HBM provides the basis for differentiated product pricing by the three manufacturers. Customer concentration is undergoing rebalancing, but regardless of the side, it remains difficult to escape the supply capacity of the three major vendors. The pricing power of HBM is shifting continuously from demand to supply.

Potential Risks: Slowing Growth Momentum and Customer Validation Delays

Despite the optimistic long-term outlook, the current HBM market still faces multiple uncertainties. First, TrendForce's Q1 2026 HBM industry report indicates that although the market continues to grow, delays in chip upgrades and inventory buildup may cause overall growth to slow in 2026, with supply and demand converging from high levels. Second, the yield rate of Samsung's 1c DRAM HBM4 is currently only about 50%, and whether it can improve yields in the first half of the year to expand actual shipments remains uncertain. For Micron, despite capacity being sold out, its 1-gamma DRAM uses EUV lithography, which also requires a yield ramp-up period; reaching large-scale stable supply will take time to verify.

Furthermore, if the full-scale volume of high-performance HBM4 is delayed due to customer chip design and mass production schedules, the revenue expectations for the three manufacturers' HBM could experience short-term valuation resets. Lastly, pricing power is a dynamic game: if AI infrastructure capital expenditure growth slows in 2027, Micron's super-competitive pricing advantage may be compressed within a certain time window.

Conclusion

Overall, the global HBM market in 2026 remains a "three-polar" pattern built by SK Hynix, Samsung Electronics, and Micron Technology. SK Hynix, with its deep integration with NVIDIA and continuous refinement of packaging technologies like MR-MUF, maintains a relatively stable leading position in HBM4. Samsung, leveraging long-term technological and capacity accumulation in DRAM, as well as end-to-end integrated supply chain capabilities from DRAM and logic chips to 3D packaging, is launching a vigorous generational counterattack. Micron, from its previous position as the "industry third" in the cyclical DRAM industry, is transforming into an indispensable second supplier in the AI memory field. Its differentiated HBM products, efficient ramp-up of HBM4 capacity, and complete AI memory product line are the strongest supports in its pursuit of catching up.

Although HBM prices are expected to remain firm and pricing power is shifting strongly toward supply, uncertainties such as capacity growth constraints, yield ramp-up risks, chip upgrade delays, and overall slowdown in HBM growth in 2026 require ongoing monitoring. For industry participants, viewing technological generation shifts and capacity scarcity beyond short-term supply-demand battles, and understanding their relationship, may be a more robust long-term strategic approach.