Lam Research earnings exceeded analyst expectations for the first quarter of fiscal 2027, but shares fell 2.4% in after-hours trading on October 21, 2026. The semiconductor equipment supplier reported revenue of $8.22 billion and non-GAAP diluted earnings of $2.20 per share for the quarter ended September 27, while forecasting further sales growth in the December quarter.
Key Takeaways
- Non-GAAP diluted earnings exceeded consensus by $0.02, while revenue beat expectations by $80 million.
- Revenue rose 22% from the June quarter, accompanied by higher operating margins.
- Management forecast December-quarter revenue of $8.60 billion, plus or minus $400 million.
Table of Contents
- Lam Research earnings rise as margins expand
- Equipment sales drive the sequential increase
- December outlook points to another sales increase
- Conclusion
Lam Research earnings rise as margins expand
Lam’s fiscal first-quarter 2027 results announcement showed GAAP net income of $2.75 billion, or $2.19 per diluted share, compared with $2.28 billion, or $1.81 per share, in the preceding quarter. Non-GAAP diluted earnings increased from $1.82 to $2.20 over the same period.
Profitability improved alongside sales. GAAP operating margin widened to 40.0% from 37.4%, while non-GAAP operating margin increased to 40.2% from 38.4%. The latter represents a 1.8-percentage-point improvement, meaning a larger share of revenue translated into operating profit.
The earnings beat and the stock decline describe different outcomes: quarterly performance exceeded consensus, but the supplied trading information does not establish why investors sold shares after the announcement.
| Item | Details |
|---|---|
| Operating cash flow | $3.50 billion in the September quarter, versus $1.46 billion in the June quarter. |
| Cash, cash equivalents and restricted cash | $7.45 billion at September 27, compared with $5.60 billion at June 28. |
| Deferred revenue | $2.66 billion at quarter-end, up from $2.43 billion. |
| Geographic revenue mix | China accounted for 35%, Korea 20% and Taiwan 18% of September-quarter revenue. |
Equipment sales drive the sequential increase
Systems revenue reached $5.73 billion, up from $4.25 billion in the June quarter. Customer support-related revenue and other revenue was comparatively stable at $2.49 billion, versus $2.47 billion. New equipment sales therefore accounted for most of the sequential revenue increase.
Lam supplies deposition, etch, clean and other equipment used in semiconductor manufacturing. Its support business includes services, spare parts, upgrades and non-leading-edge equipment.
Chief Executive Tim Archer attributed the record revenue, profit and earnings per share to operational execution amid AI-driven semiconductor demand and greater device complexity. He said investments in technology and manufacturing capacity were strengthening the company’s ability to grow faster than the wafer fabrication equipment market.
December outlook points to another sales increase
For the quarter ending December 27, 2026, Lam forecast revenue of $8.60 billion, plus or minus $400 million. The midpoint is above September-quarter revenue, although the range allows for outcomes both below and above that result.
Management also guided to GAAP and non-GAAP diluted earnings of $2.33 per share, plus or minus $0.15. Gross margin guidance was 52.5%, plus or minus one percentage point, and operating margin guidance was 40.5%, with the same tolerance, under both accounting measures.
These figures are management estimates rather than completed results. Lam identified customer investment timing, changing product and geographic mix, export controls and manufacturing constraints among the risks that could affect actual performance.
Conclusion
The next operating checkpoint is the quarter ending December 27, 2026, when Lam’s results can be measured against its higher revenue midpoint and earnings guidance. The September quarter established stronger sales and margins, without establishing a cause for the after-hours stock decline.
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