# Lam Research Posts Record Revenue on AI, Shares Drop

> Lam Research reports record quarterly revenue driven by AI infrastructure, but shares fall 6% after hours.
- Title: Lam Research Posts Record Revenue on AI, Shares Drop
- Summary: Lam Research reports record quarterly revenue driven by AI infrastructure, but shares fall 6% after hours. Lam Research reported $8.22 billion quarterly…
- Keywords: lam research, lrcx, ai infrastructure, semiconductor equipment, quarterly revenue, stock price, after hours trading, fiscal 2027, finance, markets, Lam, Research
- Source: BigGo Finance — https://finance.biggo.com/news/b72cc492-fc71-4a54-9927-a17b8a320449
- Author: BigGo Finance
- Published: 2026-10-21T21:55:35+00:00
- Read time: 1 min
- Topics: lam research, lrcx, ai infrastructure, semiconductor equipment, quarterly revenue, stock price, after hours trading, fiscal 2027, finance, markets
## Q1 Results
Lam Research reported record quarterly revenue of $8.22 billion for fiscal 2027 Q1, beating market expectations.
## AI-Driven Demand
Expanded AI infrastructure investment boosted demand for deposition and etch equipment, driving record revenue.
## Profitability Metrics
Adjusted gross margin reached 52.4%, and operating margin hit 40.2%, both all-time highs.
## Quarterly Guidance
Second-quarter revenue guidance of $8.6 billion plus or minus $400 million exceeded market estimates.
## Stock Reaction
Shares fell 6.1% after hours despite strong results, as investors took profits.
## Market Context
The stock is up 80% over the past year but down 40% from its 52-week high.
## Guidance Range Concerns
A wide revenue guidance range of $8.2 billion to $9 billion heightened investor caution.
## CEO Statement
CEO Tim Archer attributed record revenue to AI-driven semiconductor demand and complex chip manufacturing.
## Regional Breakdown
China accounted for 35% of revenue, followed by South Korea (20%) and Taiwan (18%).
## Key takeaway

Lam Research reported $8.22 billion quarterly revenue, beating estimates, but shares dropped 6.1% after hours due to narrow results and wide guidance.