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There is no like-for-like revenue ranking in the latest figures: Micron reports on a fiscal year ending September 3, 2026, while Samsung Electronics and SK hynix report calendar-quarter results through June 30. Samsung’s headline totals cover its entire company, and its release does not give a separate Memory Business revenue figure. The disclosures do show all three positioning memory products around AI servers, but they do not establish which supplier is the overall HBM leader.
How do Micron, Samsung, and SK hynix compare?
The clearest comparison is by reporting period and business scope, not by putting every revenue figure into one ranking. Micron’s fiscal-year result covers a different period from the South Korean companies’ second-quarter results. Samsung’s reported company totals are also broader than its memory business.
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| Company | Reporting period | Revenue disclosed | Scope and qualification |
|---|---|---|---|
| Micron Technology | Fiscal Q4 and FY2026; fiscal year ended September 3, 2026 | Q4: $54.229 billion; FY: $133.188 billion | Company-wide consolidated figures. Q4 revenue is also reported across four business units below. |
| Samsung Electronics | Q2 2026; quarter ended June 30, 2026 | KRW 171.5 trillion | Consolidated, company-wide revenue. The Device Solutions division reported KRW 127.5 trillion; the release describes a record for Memory Business but does not state its standalone revenue. |
| SK hynix | Q2 2026; quarter ended June 30, 2026 | KRW 79.3187 trillion | Preliminary, consolidated result under K-IFRS. |
These are issuer-reported figures for different periods and scopes, in two currencies. Without a common period, segment basis, and dated exchange-rate basis, they do not support a clean ranking of memory-business size. Samsung’s company-wide revenue and Device Solutions division revenue must not be read as memory-only totals.
Which memory company is biggest?
The disclosures here do not settle that question. Micron’s $133.188 billion is for its fiscal year ended September 3, 2026; Samsung’s KRW 171.5 trillion and SK hynix’s KRW 79.3187 trillion are for the calendar quarter ended June 30. In addition, Samsung’s figures include businesses beyond memory, and the cited release does not provide the Memory Business’s standalone revenue.
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For a business-level comparison, the available detail is uneven: Micron provides Q4 revenue by business unit, Samsung reports record Memory Business revenue without stating its amount, and SK hynix gives consolidated company revenue. Those disclosures describe company performance, but they cannot establish a comparable ranking of memory-only revenue or market share.
What Micron’s latest results show
Micron reported $54.229 billion in fiscal Q4 2026 revenue and $133.188 billion for FY2026. Its Q4 release divides revenue among four business units:
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| Micron Q4 2026 business unit | Revenue |
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The four unit figures total $54.223 billion, slightly below the reported $54.229 billion company total. The release figures are presented as reported; the available disclosure does not explain that difference. Micron also reported high operating margins across these units, but a margin comparison needs to preserve the release’s accounting basis rather than treat unlike GAAP and non-GAAP measures as equivalent.
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What Samsung’s latest results show
For Q2 2026, Samsung Electronics reported KRW 171.5 trillion in consolidated revenue and KRW 89.5 trillion in consolidated operating profit. Its Device Solutions division reported KRW 127.5 trillion in revenue and KRW 89.2 trillion in operating profit. Neither pair is a memory-only result.
Samsung said its Memory Business achieved record quarterly revenue and operating profit, with a focus on server products amid constrained capacity. It also said it scaled HBM4 sales and shipped HBM4E samples to major customers. The cited release does not give a separate Memory Business revenue or operating-profit amount, so the company-wide and Device Solutions figures cannot be used as substitutes.
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Samsung’s statements about second-half demand and undersupply are outlook, not confirmed future results. Its HBM sales and sample announcements describe company-reported status; they do not by themselves prove comparative market leadership.
What SK hynix’s latest results show
SK hynix reported Q2 2026 revenue of KRW 79.3187 trillion and operating profit of KRW 60.5426 trillion, with a 76% operating margin. The company identified the figures as preliminary, consolidated results under K-IFRS.
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SK hynix said high-value HBM, AI-server DRAM, and enterprise SSD sales supported profitability. It reported beginning mass shipments of HBM4 in Q2 and said it planned to ramp production in the second half. The company also discussed SOCAMM2 and 321-layer NAND products. These statements establish what SK hynix reported shipping or planned; they do not establish market share, customer qualification beyond the stated announcements, or an independently measured product advantage.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Who leads in HBM?
The available company disclosures do not establish a single HBM leader. They describe different milestones rather than comparable market shares or shipment volumes: SK hynix said it began mass shipments of HBM4 in Q2; Samsung said it scaled HBM4 sales and shipped HBM4E samples to major customers. Micron’s supplied Q4 highlights cover several memory and storage products, but do not provide a directly comparable HBM shipment figure or leadership claim.
Those statements are not equivalent measures: mass shipments, scaled sales, and samples indicate different product statuses. None supplies the cross-company volumes or independent market-share data needed to determine who leads overall, by generation, or by customer adoption.
What the companies’ AI-memory positioning does—and does not—tell you
All three companies connect their current memory businesses to demand from AI servers, but corporate announcements are not independent evidence that present margins, constrained supply, or demand growth will continue. Micron CEO Sanjay Mehrotra said in the September 30, 2026 release that the company expected an even stronger fiscal 2027; that is Micron’s expectation, not an established outcome. Samsung’s second-half outlook and SK hynix’s planned production ramp are likewise forward-looking company statements.
- Reported revenue, profit, shipments, and samples describe results or product status for the periods stated.
- Management forecasts and plans describe expectations, not guaranteed future performance.
- The cited releases do not provide standardized market-share figures or a normalized, same-period comparison of memory-only profitability across all three companies.
How to read future comparisons fairly
Before treating a new headline as a winner-takes-all ranking, check that the companies are being compared on the same basis:
Quick Recap
- Period: Align fiscal and calendar reporting periods, and note each period-end date.
- Business scope: Separate company-wide totals, divisions, memory segments, and product-oriented reporting units.
- Currency and accounting: Keep each stated currency and accounting basis visible. Any currency conversion needs a dated exchange-rate basis.
- Profitability: Distinguish operating profit from operating margin and GAAP from non-GAAP measures; note when results are preliminary.
- Product evidence: Do not treat samples, qualification, mass shipments, and scaled sales as interchangeable indicators of volume or market leadership.
- Outlook: Label forecasts and production plans as management expectations rather than completed results.
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