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Evaluate memory stocks by combining matched-period revenue growth, gross and operating profitability, cash generation, reinvestment, and market share within a clearly defined product category. No one metric tells the whole story: revenue can rise because prices increased rather than shipments, gross margin omits operating expenses, and a larger revenue share does not necessarily mean a comparable gain in physical output.
Use each company’s filings for its financial results and dated third-party estimates for industry share. The figures below illustrate how to read those sources; they are not a current peer ranking or a recommendation to buy a stock.
Start with comparable periods and accounting bases
Before comparing companies, write down the fiscal period, currency, accounting basis, and product category for every figure. Memory manufacturers can have different fiscal year-ends, and fiscal Q3 for one issuer may not cover the same calendar months as fiscal Q3 for another. A comparison of mismatched periods can make growth or margins look more different than they are.
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- Company-reported results: Financial statements and earnings releases report the issuer’s own results. Attribute explanations of performance to management rather than treating them as independent analysis.
- Industry estimates: Market-research firms estimate supplier revenue or shipment shares using their own definitions. Name the publisher, period, product category, and measurement basis for each estimate.
- Derived calculations: If you calculate a margin or growth rate from reported figures, show the formula and retain the source period and accounting basis of the inputs.
Micron’s investor-relations “Quarterly Results” page and its filings are starting points for its own reported data. Its 2025 Q4 10-K and fiscal 2025 results provide historical context; they should not be presented as the latest fiscal-year results when a later release is available. The examples below distinguish those historical figures from Micron’s fiscal Q3 2026 figures for the quarter ended May 28, 2026.
Read revenue growth for its drivers, not just its headline
Calculate year-over-year growth using the same company, fiscal period, and revenue definition. If a company reports fiscal-year revenue, compare it with the preceding fiscal year; if it reports a quarter, compare that quarter with the corresponding quarter a year earlier. A sequential comparison with the previous quarter can also be useful, but it answers a different question and may be affected by seasonality or a sharp change in pricing.
Revenue is the product of what a company sells, how much it sells, and the price and mix of those sales. Where disclosures permit, separate the effects of unit shipments, average selling prices, and product mix. A shift toward higher-value products can lift revenue even if total units grow more slowly. Conversely, a price decline may offset shipment growth. Issuer commentary can help identify possible drivers, but describe it as the company’s explanation unless independently verified.
Micron’s fiscal 2025 10-K reported a 49% year-over-year revenue increase and attributed the growth primarily to higher sales of both DRAM and NAND products. That establishes the company’s reported annual growth and its stated explanation; it does not, by itself, quantify how much came from price, volume, or mix. For a more recent quarter, use the latest filing or earnings release and preserve the same distinctions.
Keep DRAM, HBM, and NAND separate
DRAM and NAND are not interchangeable categories. High-bandwidth memory (HBM) is a higher-value form of DRAM, but it can have different demand, pricing, capacity, and margin dynamics from conventional DRAM. NAND serves different uses and has its own supply and pricing cycle. Compare category-level disclosures where available, and do not combine DRAM, HBM, and NAND market-share figures into a single share unless a source explicitly defines and reports that combined measure.
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Company segment reporting may not map perfectly to an industry analyst’s product categories. Check definitions before placing two figures side by side; a “memory” segment can include products that an external report divides into separate categories.
Use gross margin to assess production economics
Gross margin is gross profit divided by revenue. Review both the percentage and the gross-profit dollars: a margin percentage can rise while the business’s scale changes, and a large revenue base can produce more gross profit even when its margin rate is lower. Compare the same accounting basis and period, and look at several periods to see whether a result is a sustained trend or a point in the cycle.
For memory makers, gross margin can move sharply with selling prices, product mix, manufacturing costs, and factory utilization. Higher prices or a richer mix can improve revenue and margins; weak demand, falling prices, underused capacity, or higher costs can pressure them. A single strong quarter is not enough to establish that margins are durable.
Micron reported consolidated gross margin of 40% in fiscal 2025, compared with 22% in fiscal 2024, and attributed the improvement to better margins for both DRAM and NAND products. These are annual company-reported percentages. They should not be directly compared with a different company’s quarterly margin or with a non-GAAP figure.
For a separate, dated quarterly example, Micron’s fiscal Q3 2026 release reported revenue of US$41.456 billion and GAAP gross profit of US$35.056 billion for the quarter ended May 28, 2026. Dividing gross profit by revenue gives an approximate GAAP gross margin of 84.6% for that quarter. The US$35.056 billion figure is gross-profit dollars, not the margin percentage. It is a period-specific result, not an assumption about subsequent quarters.
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Look past gross margin to operating profit
Operating income accounts for operating expenses such as research and development, selling and administrative costs, and other operating items. Operating margin—operating income divided by revenue—shows how much of each revenue dollar remains after those expenses, before items outside operating income. It therefore answers a different question from gross margin.
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In its fiscal Q3 2026 release, Micron reported GAAP operating income of US$33.318 billion on US$41.456 billion of revenue for the quarter ended May 28, 2026. The ratio is approximately 80.4%. This is a calculation from the company’s reported figures, not a separately reported forecast or a peer comparison. The unusually high quarter-specific rate should be evaluated in context of the memory cycle and compared with later periods on the same GAAP basis.
When comparing issuers, do not rank one company’s gross margin against another’s operating margin, or GAAP operating income against a non-GAAP figure. If adjusted operating results are useful, show them separately and consult the company’s reconciliation to understand the adjustments.
Measure cash generation against investment needs
Memory production requires substantial investment in manufacturing capacity and technology. A company can report strong earnings while spending heavily on equipment and facilities, so assess operating cash flow alongside capital expenditures and the resulting free-cash-flow measure. Also review cash balances and management’s description of capacity or technology investments, without treating spending plans as proof that future returns will meet expectations.
Micron’s fiscal Q3 2026 release reported US$25.39 billion of operating cash flow, US$7.1 billion of net capital expenditures, and US$18.3 billion of adjusted free cash flow for the quarter ended May 28, 2026. The release’s adjusted free-cash-flow figure is a company-defined measure; it should not be treated as interchangeable with a free-cash-flow calculation derived directly from the cash-flow statement. Check the issuer’s definition and reconciliation before comparing it with another company’s figure.
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For a consistent cash-flow-statement comparison, choose a definition and apply it to every company—for example, operating cash flow less capital expenditures—then label the result as your calculation. Keep net capital expenditures distinct from other capital-spending figures if a company reports both. Compare cash generation over more than one period: a large quarter can reflect working-capital movements or the timing of collections and spending, not only a change in underlying profitability.
Interpret market share by category, period, and basis
“Market share” is incomplete unless it specifies what is being measured. Revenue share and shipment share can move differently. Revenue share is affected by prices and product mix as well as shipments; a supplier can gain revenue share when its selling prices rise faster than competitors’ even if its physical shipment share changes less.
TrendForce’s report dated September 7, 2026 estimated that DRAM industry revenue reached nearly US$154.73 billion in 2Q26, up 59.5% quarter over quarter. TrendForce linked the increase to sharp rises in conventional DRAM contract prices and said supply expansion continued to lag demand growth. In the same report, TrendForce estimated Micron’s 2Q26 DRAM revenue share at 23.3%; it reported Micron’s DRAM revenue rose 65.5% quarter over quarter to US$36.0 billion. These are dated third-party estimates of DRAM revenue, not audited issuer market-share disclosures or shipment shares.
The large industry revenue increase illustrates why a revenue-share change is not a direct proxy for physical output. If prices rise across the market, total revenue can jump even without an equivalent increase in bits shipped. Before interpreting a change in share as competitive progress, check whether the source reports revenue, units, bits, or another measure, and whether the product scope remained constant.
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TrendForce’s separate NAND report, dated August 18, 2026, estimated Samsung’s NAND market share at 29.3% in 2Q26 and said its share edged down as competitors grew faster. The report discusses revenue among the top NAND brands and enterprise SSD demand. This is NAND-specific context; it cannot be added to or compared as if it were the DRAM share estimate in the other report.
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Market-research firms may use different category boundaries, sampling methods, or revenue definitions. Date every figure and identify its publisher. Treat different firms’ estimates as separate series unless their methodologies are demonstrably comparable; do not construct a continuous ranking by combining incompatible estimates.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Build a comparison table without mixing unlike figures
A useful stock-research worksheet places the company-reported financial data and third-party market estimates in separate sections. Fill it with figures from each issuer’s latest filings and a consistent market-share source. The available examples below illustrate the fields and why they need labels; they are not a complete comparison across memory manufacturers.
| Measure | What to record | Illustrative evidence and qualification |
|---|---|---|
| Revenue growth | Matched-period year-over-year rate; product or segment detail; stated price, volume, or mix drivers | Micron reported 49% fiscal 2025 year-over-year revenue growth and attributed it primarily to higher DRAM and NAND sales, per its 2025 Q4 10-K. |
| Gross margin | Gross-profit dollars and gross margin percentage, with GAAP or non-GAAP basis and period | Micron reported fiscal 2025 consolidated gross margin of 40%, versus 22% in fiscal 2024, and fiscal Q3 2026 GAAP gross profit of US$35.056 billion on US$41.456 billion of revenue for the quarter ended May 28, 2026. |
| Operating profitability | Operating income and operating margin on the same basis | Micron reported fiscal Q3 2026 GAAP operating income of US$33.318 billion for the quarter ended May 28, 2026. |
| Cash and reinvestment | Operating cash flow, capital expenditures, cash balance, and clearly defined free cash flow | Micron reported fiscal Q3 2026 operating cash flow of US$25.39 billion, net capital expenditures of US$7.1 billion, and adjusted free cash flow of US$18.3 billion; the adjusted measure is company-defined. |
| DRAM share | Publisher, quarter, product, revenue or shipment basis | TrendForce estimated Micron held 23.3% of DRAM revenue in 2Q26. This is a third-party revenue-share estimate. |
| NAND share | Publisher, quarter, product, revenue or shipment basis | TrendForce estimated Samsung’s NAND share at 29.3% in 2Q26. This is not a DRAM figure. |
The cited evidence does not establish a complete, consistently sourced side-by-side financial comparison of Samsung Electronics, SK hynix, and Micron. Do not fill gaps with estimates from different fiscal periods or accounting bases and present the result as a ranking. Obtain each company’s own latest filings for financials, and select one dated, consistently defined source for industry-share comparisons.
Turn the metrics into an investment assessment
Use the measures together to test a business case rather than letting one favorable number decide it. A practical sequence is:
- Verify the periods. Match fiscal year or quarter, currency, and reporting basis before comparing growth or profitability.
- Explain revenue. Separate product categories where disclosures permit; identify whether management points to price, volume, or mix and mark that explanation as management’s view.
- Test profitability. Review gross profit and margin, then operating income and margin. Look across multiple periods to distinguish a cyclical surge from a durable cost or product-mix advantage.
- Check cash conversion and investment. Compare operating cash flow with capital expenditures, cash balances, and a consistently defined free-cash-flow measure.
- Verify market share. Label the product category, quarter, publisher, and revenue or shipment basis. Separate third-party estimates from issuer-reported results.
- Assess what the metrics do not answer. Financial growth and market share alone do not establish whether a stock is attractively priced, how long a favorable cycle will last, or whether future demand will meet expectations. Those questions require current valuation data and explicit assumptions about future conditions.
Memory is cyclical, and prices, margins, and supplier shares can change quickly. TrendForce’s 2Q26 figures are a dated market snapshot, not a forecast. Micron CEO Sanjay Mehrotra described the company’s fiscal Q3 record results and stronger Q4 outlook as reflecting the strategic value of memory in the AI era; that is management’s characterization, not independent proof of future demand or a guarantee of results.
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