Lam Research Posts Record Quarter, Yet Shares Tumble on AI Capex Doubts

Lam Research, one of the three dominant makers of the machines that etch and deposit materials onto silicon wafers, reported record quarterly revenue and profit late Wednesday, capping another period of explosive demand tied to artificial-intelligence chip production. Yet shares of the Fremont, California-based company fell sharply in premarket trading Thursday, a reaction that underscored how far expectations for the sector have run ahead of even blowout results.

The company's earnings statement, released after Wednesday's closing bell and also filed with the Securities and Exchange Commission as part of an 8-K disclosure, showed revenue of $8.22 billion for the quarter ended September 27, up 22 percent from the prior quarter's $6.72 billion and up roughly 54 percent from a year earlier. It was the company's highest quarterly revenue on record.

The numbers

According to the earnings exhibit filed with the SEC, Lam reported GAAP diluted earnings per share of $2.19 and non-GAAP diluted earnings per share of $2.20, both records for the company. GAAP gross margin came in at 52.3 percent and GAAP operating margin at 40.0 percent, each an improvement from the prior quarter, when gross margin was below 52 percent, per the June-quarter results filing. Systems revenue, which reflects new equipment sales rather than servicing of installed tools, totaled $5.73 billion, with customer support and other revenue making up the remaining $2.49 billion.

Looking ahead, Lam guided for revenue of $8.60 billion, plus or minus $400 million, in the current quarter ending December 27 — which would mark another sequential record — along with gross margin of roughly 52.5 percent and diluted earnings per share of $2.33, plus or minus 15 cents. Cash and cash equivalents rose to $7.45 billion from $5.60 billion, helped by operating cash flow of $3.50 billion, more than double the prior quarter's $1.46 billion. The company repurchased $1.02 billion of stock during the quarter and raised its quarterly dividend to 33 cents per share from 26 cents.

Geographically, China accounted for 35 percent of quarterly revenue, the largest single market, followed by Korea at 20 percent and Taiwan at 18 percent — a reminder of how central Asian memory and logic fabs remain to Lam's business even as Washington's export-control regime continues to evolve.

Why the stock fell anyway

Despite results that beat most analyst estimates on both revenue and earnings, Lam shares fell to roughly $240 in premarket trading Thursday, down about 8 percent from Wednesday's closing price of $260.81, according to quote data from StockAnalysis.com and independently corroborated on Yahoo Finance. The decline wiped out a large share of the stock's gains built up over recent months, when Lam, along with peers Applied Materials and KLA, became a favored proxy for the broader bet that generative-AI infrastructure spending would keep expanding.

That run-up had pushed valuations and expectations higher heading into the report. On October 5, more than two weeks before the release, Morgan Stanley raised its price target on Lam to $385 from $367, citing growing confidence in the durability of the company's logic-chip market-share gains and lifting its forecast for system-shipment growth to 50 percent for calendar 2026. With a bar set that high, even a record quarter and an above-consensus forecast left room for disappointment once investors parsed the margin trajectory and the pace of growth implied by next quarter's guidance relative to the scale of the September-quarter beat.

"Our focus on operational execution helped Lam deliver record revenue, profit and earnings per share," Lam Research president and chief executive Tim Archer said in the earnings release, attributing the results to continued investment in wafer fabrication technology tied to artificial intelligence and rising chip complexity.

Who is affected

The reaction extends beyond Lam's own shareholders. Semiconductor-equipment makers such as Applied Materials, KLA Corporation and the Dutch lithography giant ASML tend to trade in tandem with Lam around earnings, since all three are tied to the same global wafer-fab-equipment market and the same underlying question: whether chipmakers' current pace of capital spending on AI-related memory and logic capacity can be sustained into 2027. Chipmakers in South Korea, Taiwan and the United States that rely on Lam's etch and deposition tools — including large memory and foundry customers — are also affected indirectly, since Lam's order book and lead times offer one of the clearer early readings on how aggressively those customers are expanding capacity.

Investors in the broader AI-infrastructure trade, which has driven much of the stock market's gains this year, are watching the equipment makers closely as well. A sharp premarket sell-off in a company reporting record results sends a signal that the market's patience for growth that merely matches already-elevated expectations, rather than exceeding them by a wide margin, is wearing thin.

What's next

Lam's own guidance points to continued sequential growth into the December quarter, and the company's cash generation and dividend increase suggest management is not signaling caution internally. The next real test will come as peers Applied Materials and KLA report their own quarterly results in coming weeks, which should show whether Thursday's reaction to Lam was company-specific — tied to valuation and the scale of the beat — or the start of a broader re-rating of the equipment sector. Also in view is the Federal Reserve's next policy announcement, due October 28, which will shape the interest-rate backdrop against which investors are weighing richly valued AI-linked stocks. For now, Lam's results confirm that demand for chipmaking tools remains strong; the stock's reaction confirms that strong is no longer enough to satisfy a market pricing in near-perfection.