Lam Research reported $8.219 billion revenue for the quarter ended 27 September 2026, up from $6.722 billion in the preceding June quarter. Its 21 October presentation also set out a December-quarter revenue forecast of $8.60 billion, with a $400 million range on either side.
The September figures cover one quarter, not a full-year result. The June comparison is sequential rather than year-on-year, a distinction that matters when reading the pace of growth.
Actual results versus the next-quarter forecast
| Measure | Verified figure |
|---|---|
| September-quarter revenue | $8.219 billion; June quarter $6.722 billion Source |
| GAAP diluted EPS | $2.19; June quarter $1.81 Source |
| Non-GAAP diluted EPS | $2.20; June quarter $1.82 Source |
| Non-GAAP operating margin | 40.2%; June quarter 38.4% Source |
| December-quarter revenue guidance | $8.60 billion ±$400 million; forecast Source |
| December non-GAAP EPS guidance | $2.33 ±$0.15; forecast Source |
Lam’s reconciliation starts with GAAP net income and adjusts specified items, including deferred-compensation valuation effects, acquisition-related amortization and tax items. The small EPS difference this quarter does not make the two definitions identical.
How to read the outlook
The revenue guidance represents a range of possible company-forecast outcomes, not sales already booked in the accounts. December’s non-GAAP EPS guidance is also prospective and depends on assumptions, including the diluted share count used in the calculation.
Operating margin expresses operating profit as a share of revenue. Here the 40.2% figure is explicitly non-GAAP; it should not be presented as the statutory operating margin. Comparing like-for-like measures is more informative than choosing the higher-looking figure.
Readers following the wider chip supply chain can also see CapKet’s report on SK hynix’s CXL memory demonstrations. A product demonstration is a separate development and does not verify Lam’s future customer demand or revenue.
The next useful check is the eventual December result against the disclosed guidance, with the same accounting basis and reporting dates.
Official evidence and scope
Lam Research official results and financial tables. Source observed at 2026-10-22T06:16:57.002Z. Figures refer to the stated reporting period, not a live market quotation. The source comparison is AI-assisted, not independent human editorial approval. No share-price reaction or investment recommendation is asserted.
Lam Research supplementary official results resource, observed at 2026-10-22T06:22:29.255Z. This issuer resource and the main document are not independent corroborating sources.
Recorded source observation: . This is a source-check timestamp, not a market quote or a new article update.