Micron, SK Hynix, or Samsung? The Competitive Landscape of HBM in the AI Memory Era Gets a Major Upgrade

Markets
Updated: 06/29/2026 02:35

June 24, 2026, marked a historic milestone for Micron Technology (NASDAQ: MU), as the company delivered a financial report destined to be remembered in the annals of the semiconductor industry. For the third quarter of fiscal year 2026, ending May 28, Micron posted revenue of $41.46 billion, up 346% year-over-year and 74% quarter-over-quarter, setting a new all-time high for the fifth consecutive quarter. GAAP net income reached $28.24 billion, with diluted earnings per share of $24.67. On a non-GAAP basis, net income was $28.86 billion, with EPS at $25.11.

What truly caught the market’s attention was Micron’s gross margin, which soared to 84.9%—a quarter-on-quarter increase of 10 percentage points and double the margin from a year earlier. This level rivals the profitability of high-end consumer brands. Following the earnings release, Micron’s stock surged 15.78% in after-hours trading to $1,213.96. The company’s guidance for the fourth quarter also exceeded expectations: projected revenue of approximately $50 billion (±$1 billion), gross margin around 86%, and EPS about $31 (±$1). All three metrics are set to break company records in its 48-year history.

The real significance of this report lies not in the "off-the-charts" numbers from the past three months, but in what it reveals about the structural transformation underway in the memory chip industry—from a "cyclical commodity" to "core AI infrastructure." As Micron CEO Sanjay Mehrotra stated on the earnings call: "The strategic value of memory in the AI era is being redefined, and the tight supply-demand environment will persist beyond 2027."

Micron: From "Cyclical Stock" to "AI Infrastructure"—A Valuation Overhaul

The numbers from Micron’s Q3 2026 earnings speak for themselves. Revenue of $41.46 billion not only smashed market expectations of $35.84 billion but also represented more than a threefold increase from $9.3 billion a year ago. GAAP net income jumped more than 13 times year-over-year, with quarterly profits now surpassing the company’s total annual earnings during industry downturns.

Profitability improvements were even more striking: gross margin leapt from 37.7% a year ago to 84.6%, while operating margin expanded from 23.3% to 80.4%. All four major business units posted high gross margins: Cloud Storage at 83%, Core Data Center at 87%, Mobile & Client at 87%, and Automotive & Embedded at 79%. Micron’s data center-related business now boasts an annualized run rate exceeding $100 billion, with data center SSD revenue doubling quarter-over-quarter to surpass $5 billion.

Micron’s financial health has also undergone a historic turnaround. Operating cash flow for the quarter hit $25.388 billion, with adjusted free cash flow exceeding $18.3 billion. Long-term debt shrank by over 63% since the start of the fiscal year, shifting the company’s net position from net debt to a robust net cash balance of $20.3 billion. Inventory rose by only $300 million, while the inventory-to-revenue ratio dropped sharply from 34.6% last quarter to 20.7%, directly reflecting the supply-constrained market.

Micron’s progress in the HBM (High Bandwidth Memory) arena—the core battleground for AI storage—is especially noteworthy. HBM4 memory chips, based on 1-beta generation DRAM technology, are now shipping in volume to key customer platforms, with validation samples delivered to several others. Next-generation HBM4E products are under development, with mass production expected in 2027. Micron has been chosen as a primary HBM supplier for Nvidia’s Blackwell GPUs and the Vera Rubin AI platform, with HBM4 designed for Vera Rubin shipping since March 2026. All of Micron’s HBM production capacity for 2026 has been sold out under long-term contracts, and management has confirmed that current supply meets only about 50% to 66% of actual customer demand.

From an MU stock analysis perspective, the market’s valuation logic for Micron has fundamentally shifted. On June 23, the day before earnings, Micron’s share price hit an all-time intraday high of $1,213.56, closing at $1,211.38. Deutsche Bank raised its target price from $1,500 to $1,550, maintaining a "Buy" rating. Susquehanna went further, lifting its target from $1,750 to $2,000. FactSet estimates suggest Micron’s 2026 operating profit could rank fifth in the S&P 500, rising to third in 2027—trailing only Nvidia and Alphabet.

SK Hynix: Balancing HBM Dominance and Capacity Expansion

While Micron’s results were "beyond expectations," SK Hynix delivered "dominant" performance. In Q1 FY2026 (ending March 31), SK Hynix reported revenue of KRW 52.5763 trillion (approx. RMB 244.112 billion), up 198% year-over-year and 60% quarter-over-quarter. Operating profit reached KRW 37.6103 trillion, up 405% year-over-year and 96% quarter-over-quarter. The operating margin soared to 72%, the highest in company history. Net profit stood at KRW 40.35 trillion, with a net margin of approximately 77%.

In the critical HBM sector—which determines industry leadership—SK Hynix remains firmly in the lead. According to Counterpoint Research data released June 25, 2026, global HBM market share by revenue for Q1 2026 was: SK Hynix at 58%, Samsung Electronics and Micron each at 21%. Although SK Hynix’s share dropped from 69% in Q1 2025, it still commands nearly half the market. Visible Alpha’s figures put SK Hynix at 51.4%, Samsung at 21.2%, and Micron at 27.4%. Despite differences in methodology, SK Hynix’s leadership is undisputed.

SK Hynix is also aggressively advancing its technology roadmap. The company will launch the world’s first LPDDR6 DRAM using sixth-generation 10nm-class (1c) process technology. In HBM, SK Hynix is enhancing its capabilities in integration, yield, quality, and supply stability. Core infrastructure expansion and EUV equipment deployment are centered around the Cheongju M15X fab and the Yongin cluster in Korea. On the earnings call, SK Hynix’s head of HBM sales and marketing stated that customer demand for HBM chips over the next three years far exceeds the company’s supply capacity. Analysts project SK Hynix’s 2026 operating profit will surpass $100 billion.

Samsung Electronics: A 756% Profit Surge Amid "Fire and Ice"

Samsung Electronics’ Q1 2026 financials also shattered Korean corporate records. The company posted revenue of KRW 133.9 trillion (approx. $89.7 billion), up 69% year-over-year and 43% quarter-over-quarter. Operating profit soared to KRW 57.2 trillion (approx. RMB 264.3 billion), up 185% quarter-over-quarter and a staggering 756% year-over-year. Net profit was KRW 47.23 trillion, up 474.3% year-over-year. The KRW 57.2 trillion in operating profit far exceeded the consensus estimate of KRW 45.66 trillion and surpassed Samsung’s full-year 2025 operating profit of KRW 43.6 trillion.

The semiconductor (DS) division was the highlight of the report. DS posted Q1 revenue of KRW 81.7 trillion, up 225% year-over-year and 86% quarter-over-quarter. Operating profit reached KRW 53.7 trillion, up 47.82 times year-over-year and 227.4% quarter-over-quarter, accounting for 93.4% of the company’s total operating profit. Memory revenue was about KRW 74.8 trillion, up 292% year-over-year. Samsung noted that its memory business "met high-value AI demand despite limited supply, setting a new quarterly sales record."

Samsung is rapidly catching up in HBM. HBM-related revenue more than tripled year-over-year, and 2026 HBM sales are expected to exceed three times the 2025 total. HBM4 began global mass production shipments in February 2026, exclusively for Nvidia’s Vera Rubin platform. HBM4E samples are planned for delivery in Q2 2026, with a per-pin data rate of 16Gbps and total bandwidth exceeding 4.0TB/s—about 21% higher than HBM4. Samsung expects HBM4 revenue to account for over 50% of total HBM sales starting in Q3 2026, and aims to capture more than 50% of the global HBM4E market by 2027.

However, beneath Samsung’s "golden age" lies a growing divergence. Soaring memory prices have weighed on end-product businesses like smartphones, TVs, and appliances, creating a stark contrast between chip and finished goods segments. In Q1, average selling prices for DRAM and NAND jumped over 90%, sharply increasing cost pressures for downstream units. Samsung’s head of memory business admitted, "Traditional DRAM is actually more profitable than HBM." This counterintuitive reality highlights the unique nature of this memory cycle—AI training demand has also triggered a surge in traditional server DRAM purchases, making the supply-demand gap for standard DRAM even tighter than for HBM.

HBM: The Core Battleground Shaping the Next Three Years

HBM (High Bandwidth Memory) is the key variable for understanding this memory supercycle. The growth logic for HBM memory AI demand is clear and compelling: AI accelerators require exponentially greater memory bandwidth and capacity, making HBM an even hotter commodity than GPUs.

According to SEMI China, the HBM market is projected to grow 58% in 2026 to $54.6 billion, accounting for nearly 40% of the DRAM market. Even though the three major manufacturers have shifted 70% of new and flexible capacity to HBM, the supply gap remains at 50% to 60%. Major overseas memory makers have already sold out their 2026 HBM capacity in advance.

TrendForce analysis shows that 2026 HBM demand growth will be driven mainly by capacity upgrades in AI ASICs, with per-chip HBM capacity rising from 96GB/192GB to 216GB/288GB. While single-GPU HBM capacity on Nvidia’s Rubin platform is expected to be similar to the previous generation, increased shipment volumes will continue to drive overall demand. Micron projects the global HBM market will grow from about $35 billion in 2025 to roughly $100 billion in 2028, a CAGR of about 40%.

Competition among the three giants on the HBM technology roadmap has reached a fever pitch. Samsung plans to sample HBM4E in Q2 2026, making it the first in the world to announce this milestone. SK Hynix is betting on HBM4E and 1c process LPDDR6 DRAM, with HBM4E samples sent to customers in the second half of 2026 and mass production slated for 2027. Micron’s HBM4, designed for Nvidia’s next-generation Vera Rubin architecture, is already shipping in volume, with HBM4E development on track for 2027 mass production.

TrendForce forecasts SK Hynix will maintain about 50% HBM market share in 2026, with Samsung at 28% and Micron at 22%. Samsung’s HBM4 certification is progressing fastest, with mass production expected to begin after Q2. While SK Hynix’s lead remains significant, Samsung and Micron are rapidly closing the gap.

Memory Supercycle Resonates with the Cryptocurrency Market

As of June 29, 2026, the cryptocurrency market is undergoing a correction. Bitcoin fell below the $60,000 mark, last trading at $59,356.3, after dipping as low as $58,888 earlier in the day. Ethereum briefly dropped below $1,550. Coinglass data shows that over 60,000 traders were liquidated in the past 24 hours, with total liquidations reaching $173 million. According to Gate market data, BTC/USDT is currently at $58,989.5, down 2.01% over 24 hours.

This market trend stands in intriguing contrast to the booming memory chip sector. On one hand, the ongoing expansion of AI compute infrastructure—including the memory chip supercycle—provides fundamental hardware support for cryptocurrency mining and AI-related tokens. On the other hand, the overall weakness in crypto markets reflects heightened risk aversion in global assets.

From a macro perspective, there is an implicit capital flow chain between the memory chip and crypto industries. As memory giants achieve explosive growth driven by AI demand, capital markets are re-evaluating the pricing logic for hardware infrastructure. Following its earnings release, Micron’s market capitalization briefly surpassed Meta Platforms, peaking between $1.393 trillion and $1.418 trillion. This milestone signals a deeper revaluation of hardware companies in the AI era and provides a valuation benchmark for crypto projects focused on AI and infrastructure.

Conclusion: A Structural Transformation, Not a Cyclical Rebound

Micron’s $41.46 billion in Q3 FY2026 revenue, SK Hynix’s 72% operating margin, and Samsung’s 756% profit growth—all point to one conclusion: the current memory industry boom is not a simple cyclical rebound, but a structural transformation driven by the AI compute revolution.

There is ample data to support this view. In 2026, the global supply-demand gaps for DRAM, NAND flash, and HBM are projected at 4.9%, 4.2%, and 5.1%, respectively—the highest since 2011. TrendForce reports that Q1 2026 contract prices for generic DRAM rose 93% to 98% quarter-over-quarter, while NAND contract prices increased 85% to 90%. Micron management confirmed on the earnings call that tight DRAM and NAND supply will persist at least through 2028. The company has signed 16 strategic customer agreements, securing over $22 billion in cash and related financial commitments, with most contracts spanning five years and prohibiting unilateral cancellation. The widespread adoption of long-term contracts means that supply-demand tightness has shifted from a "short-term phenomenon" to an "institutional arrangement."

The race among the three giants on the HBM technology roadmap is only accelerating. From mass production of HBM4 to sampling of HBM4E, from 1c process DRAM to 321-layer NAND, the pace of innovation and scale of capital expenditure are both at historic highs. Micron projects Q4 revenue of $50 billion with gross margins around 86%. SK Hynix is expanding capacity centered on the Yongin cluster and Cheongju M15X. Samsung plans to maintain an AI-centric sales strategy and is moving aggressively into the PCIe Gen6 enterprise SSD market.

For investors, understanding the shifting competitive landscape among the three giants is essentially about grasping the pricing logic of AI-era compute infrastructure. HBM is evolving from a "memory component" to "core AI infrastructure," a transformation that is reshaping the entire semiconductor industry’s valuation framework. As the intersection of AI technology and financial innovation, the cryptocurrency market’s linkage to memory hardware cycles will be an increasingly important area to watch.

FAQ

Q1: What are the key figures from Micron’s Q3 FY2026 earnings report?

Micron’s Q3 FY2026 (ending May 28, 2026) posted revenue of $41.46 billion, up 346% year-over-year and 74% quarter-over-quarter. GAAP net income was $28.24 billion, with a gross margin of 84.9%—both record highs. The company projects Q4 revenue of about $50 billion and gross margin of approximately 86%.

Q2: What are the HBM market shares of the three major memory giants?

In Q1 2026, SK Hynix led the HBM market with about 58% revenue share, while Samsung Electronics and Micron each held around 21%. TrendForce expects SK Hynix to maintain about 50% market share for all of 2026, with Samsung at 28% and Micron at 22%.

Q3: What is the projected size of the HBM market in 2026?

SEMI China projects the HBM market will grow 58% in 2026 to $54.6 billion, accounting for nearly 40% of the DRAM market. Even though the three major manufacturers have shifted 70% of new capacity to HBM, the supply gap remains at 50% to 60%.

Q4: How does this memory price upcycle differ from previous cycles?

This upcycle is driven by structural growth in AI compute demand, not just cyclical supply-demand fluctuations. Gartner data shows that a single AI server uses 8 to 10 times more DRAM than a traditional server. Micron management confirms that supply tightness will last at least through 2028.

Q5: How are the cryptocurrency and memory chip industries connected?

The two are indirectly linked through AI infrastructure investment. Memory chips are core components of AI servers, and both crypto mining and AI-related token projects rely on compute hardware. As of June 29, 2026, Bitcoin is trading around $59,356, in a correction phase.

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