Key Highlights

  • Lam Research fell 6.01% to $239.11 on October 30, 2026.
  • Intel's collapse and AI spending doubts weighed on chip equipment stocks.
  • September quarter Revenue reached a record $8.22 billion, up 54% year over year.
  • Lam guided December quarter revenue to $8.60 billion, plus or minus $400 million.

Why would a company that just reported record revenue, record margins and record Earnings fall 6% in a single session? For Lam Research (NASDAQ:LRCX), the answer on Friday was guilt by association. The wafer fabrication equipment maker closed at $239.11, down from $254.39, on Volume about one and a half times its normal level, as a collapse in Intel (NASDAQ:INTC) shares and doubts about AI spending spread across the semiconductor sector. Lingering concern about Supply constraints flagged in Lam's own earnings report nine days earlier added to the pressure.

Intel and Amazon set the tone

The broader market had a rough day. Market reports said the Nasdaq Composite fell 2.84% and the S&P 500 lost 1.83%. Intel dropped about 29%, its worst day since 1974, after giving a much weaker-than-expected fourth-quarter forecast and citing a severe PC slump and a factory accident in Israel. According to market reports, Intel's report triggered a chip-sector selloff that hit equipment makers, foundries and analog suppliers, while Amazon (NASDAQ:AMZN)'s below-expectations fourth-quarter outlook raised doubts about the durability of AI-driven Capital spending, the main Demand driver behind Lam's growth story.

Because chipmakers fund their factory spending from their own profits, a weak outlook from a major manufacturer tends to weigh on the companies that sell them tools. Market Analysis noted that the technology equipment sector fell 4.30% on Friday, meaning Lam underperformed its group. Options activity also showed cautious positioning as the shares dropped.

The supply constraint overhang

Friday's decline extended a rough stretch that began with Lam's own report. On the October 21 earnings call, chief financial officer Doug Bettinger said the December-quarter revenue outlook would have been "a little bit higher" without near-term supply-chain constraints, and some shipments are expected to slip into the March quarter. Market reports said the shares initially fell more than 11% on that news. Since then, UBS lowered its price target to $400 from $425 and Mizuho trimmed its target to $360 from $365, while Morgan Stanley (NYSE:MS) set a $339 target with an Overweight rating. The shares are now far below their 52-week high of $438.50.

What Lam does

Lam Research, based in Fremont, California, makes the equipment chipmakers use to deposit and etch the ultra-thin layers of material that form transistors and memory cells. Its tools are especially important in memory, where stacking layers in 3D NAND and building high-bandwidth memory for AI accelerators requires precise etching and deposition. Lam also has a large customer support Business that services its installed base of machines, and it is expanding in advanced packaging, a key bottleneck for AI chips.

Record results

The September quarter, which ended September 27, was the best in Lam's history. Revenue reached $8.22 billion, up 22% from the June quarter and 54% from a year earlier, according to a call summary. Non-GAAP gross Margin was 52.4%, non-GAAP Operating Margin was 40.2%, and non-GAAP earnings were $2.20 per share. Chief executive Tim Archer said in the release that "our focus on operational execution helped Lam deliver record revenue, profit, and earnings per share." The company generated record free Cash Flow of $3.24 billion, bought back about $1.02 billion of stock, paid $325.4 million in dividends and declared a quarterly Dividend of $0.33 per share, up from $0.26 a year earlier.

Memory remained the engine. Memory made up 46% of systems revenue, with memory systems revenue up 120% from a year earlier. China accounted for 35% of total revenue, up from 26% in the prior quarter, but management expects that share to fall significantly in the December quarter, mainly because of lower spending by domestic Chinese customers. Korea contributed 20% and Taiwan 18%. The customer support business brought in nearly $2.5 billion, up about 40% from a year earlier, and management said its Aether dry-resist technology, now ramping in high-bandwidth memory production, could generate about $2.5 billion in cumulative revenue by the end of the decade, roughly $1 billion more than previously expected.

For the December quarter, Lam guided revenue of $8.60 billion, plus or minus $400 million, a gross margin of 52.5% and an operating margin of 40.5%, each plus or minus one point, and earnings of $2.33 per share, plus or minus 15 cents.

A bigger industry next year

Management's industry outlook remains upbeat. Lam expects calendar 2026 wafer fabrication equipment spending in the mid-$150 billion range and gave a preliminary 2027 view above $200 billion, led by DRAM, then leading-edge foundry and logic, and NAND. It expects about 10 new Tier 1 fabs to come online in 2027 and said clean-room space and certain components could limit the industry's ability to meet that demand. Advanced packaging revenue is expected to grow about 70% in 2026.

Valuation

Market data puts Lam's trailing price-to-earnings ratio at 35.58. Market analysis notes that is well above the company's five-year median of about 23.9 times. Within the semiconductor space, market data lists trailing multiples of 25.87 for Nvidia (NASDAQ:NVDA), 41.63 for Broadcom (NASDAQ:AVGO) and 11.92 for Micron (NASDAQ:MU). Annualizing the December-quarter earnings guidance of $2.33 per share gives about $9.32, which would put the stock at roughly 26 times that run rate.

The bull case

Supporters point to a strong upcycle in memory, the AI-driven demand for high-bandwidth memory, a 2027 equipment market that management expects to top $200 billion, and record margins above 40%. Supply constraints, in this view, delay revenue rather than eliminate it. Market analysis cites an average analyst price target of about $359, well above Friday's close.

The bear case

Skeptics focus on cyclicality and concentration. A large share of revenue comes from China, which is expected to decline, and any pullback in AI spending by cloud giants could ripple back to memory and foundry customers. Supply constraints could cap upside in the near term. Market analysis also flagged insider selling, including a sale of 31,400 shares by Archer. After a large run, the stock remains sensitive to swings in sentiment toward semiconductors.

Supply Constraints and 2027 Outlook

Investors will watch for signs that the supply constraints are easing, for updates on 2027 equipment spending plans from memory makers and foundries, and for any change in capital spending plans from Intel after its weak outlook. Hyperscaler commentary on AI budgets will remain a key swing Factor for the whole chip sector, and Lam's next Quarterly Report will show whether China revenue falls as much as management expects.