Lam Research stock fell 8.95% to $237.46 in intraday Nasdaq trading on October 22, 2026, a day after the semiconductor-equipment supplier announced sharply higher quarterly revenue and profit. The shares lost $23.35 from their previous close even as management forecast December-quarter revenue of $8.20 billion to $9.00 billion.
Key Takeaways
- The nearly 9% decline was an intraday move, not a closing result.
- September-quarter revenue rose 54.4% year over year to $8.22 billion.
- December-quarter guidance calls for diluted earnings of $2.18 to $2.48 per share.
Table of Contents
- Lam Research stock retreats after earnings release
- Revenue and profitability improve together
- December outlook points to a higher revenue midpoint
- Conclusion
Lam Research stock retreats after earnings release
Shares traded at $237.46 on Thursday, below the previous close of $260.81 but above their opening price of $234.62. The decline followed results published on October 21 for the quarter ended September 27, 2026.
The timing places the selloff immediately after the earnings announcement, but the available information does not establish a specific reason for the selling. Higher reported earnings alone do not explain whether results or guidance met investors’ expectations.
| Item | Details |
|---|---|
| October 22 opening price | $234.62 |
| Intraday trading range | $232.20–$242.10 |
| Trading volume at the snapshot | 6.89 million shares; stated average volume was 9.33 million shares |
Revenue and profitability improve together
Lam Research’s September-quarter financial results showed revenue of $8.22 billion, up from $5.32 billion a year earlier. GAAP net income increased to $2.75 billion, or $2.19 per diluted share, from $1.57 billion, or $1.24 per share.
Adjusted net income, a non-GAAP measure, reached $2.77 billion, or $2.20 per diluted share. Revenue also increased 22% from the June quarter, while GAAP operating margin widened to 40.0% from 37.4%. That means the sequential improvement extended beyond sales to operating profitability.
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 position.
December outlook points to a higher revenue midpoint
For the quarter ending December 27, 2026, management projected revenue of $8.60 billion, plus or minus $400 million. That translates to a range of $8.20 billion to $9.00 billion, with the midpoint about 4.6% above September-quarter revenue.
The company forecast both GAAP and non-GAAP diluted earnings of $2.33 per share, plus or minus $0.15, equivalent to $2.18 to $2.48. These are management estimates rather than completed results, and Lam cautioned that actual outcomes could differ materially.
Conclusion
Lam Research stock declined despite stronger sales and profitability. The next operating benchmark is the quarter ending December 27, when performance can be measured against management’s revenue and earnings guidance.
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