Intel stock down sharply in after-hours trading on 29 October 2026, even though the chipmaker beat profit expectations for the third quarter. Intel reported revenue of $16.5 billion, up 21% from a year earlier, and adjusted earnings of $0.52 a share. Investors focused instead on what comes next: a weaker fourth-quarter outlook, a personal computer (PC) slowdown expected to last into 2027, and a factory explosion in Israel that Intel said would cost about $600 million in lost revenue over two quarters. The story was trending per news coverage on the evening of 29 October, as earnings from several large technology companies landed on the same day. This article explains the five reasons behind the fall, what Intel actually reported, and what to watch next.
In regular trading on 29 October, Intel shares closed at $92.07, down 3.6%, according to Morningstar and Dow Jones Newswires. After the market closed and the results were published, the shares fell much further. One widely reported after-hours print put the fall at about 17%, to roughly $77, while other prints during the evening put it at about 18% or lower as trading moved. The exact after-hours percentage therefore varied by the time of the print, and this article reports the range rather than a single final figure. For context, Morningstar noted that the shares had more than doubled in price during 2026 up to the close on 29 October, so the Intel stock down move came after a very strong run.
Intel Stock Down: What Intel Reported for Q3 2026
Intel's own press release put the headline numbers plainly. Third-quarter revenue was $16.5 billion, up 21% year over year from $13.7 billion. Earnings per share attributable to Intel on a generally accepted accounting principles (GAAP) basis were $0.60, down 33% from $0.90 a year earlier, while GAAP net income was $3.3 billion, down from $4.1 billion. On the adjusted, non-GAAP basis that analysts track most closely, earnings per share were $0.52, up 126% from $0.23 a year earlier and above the consensus expectation of roughly $0.40 to $0.41 reported by several outlets. Gross margin improved to 43.0% on a GAAP basis, from 38.2%, and to 44.1% on a non-GAAP basis. Operating margin rose to 15.3%, from 5.0% a year earlier, and Intel generated $5.1 billion in cash from operations in the quarter.
Chief executive Lip-Bu Tan said the results showed improving execution, meaningful progress in expanding supply, and continued advancement of the company's process technology. He added that demand for Intel's central processing units (CPUs) remained robust despite near-term headwinds across the PC industry, and that the immediate priority was to unlock additional supply to meet extraordinary demand for the Xeon family of server processors. Chief financial officer David Zinsner said revenue, gross margin, and earnings per share had all exceeded guidance, including the strongest data centre revenue growth in 15 years. The two parts of the business told very different stories, however. Data Center and AI revenue surged 78% to $7.3 billion, while Client Computing and Physical AI Group revenue fell 5% to $8.1 billion. Intel Foundry revenue rose 58% to $6.7 billion. That split, strong server demand against a weak PC market, runs through every reason for the share fall, and it echoes a week in which other chip and cloud results also moved markets: Microsoft and Alphabet reported earnings in the same week, with very different share reactions.
Reason 1: Weak Q4 Guidance Overshadowed the Q3 Beat
The first reason Intel stock fell is the simplest: the forecast for the fourth quarter disappointed investors. Intel guided fourth-quarter revenue to between $15.0 billion and $16.0 billion, with GAAP earnings per share of $0.10 and non-GAAP earnings per share of $0.25. Analysts polled by FactSet had expected roughly 43 to 45 cents a share on revenue of about $17 billion, according to Morningstar and other reporting of the consensus. In other words, even the top of Intel's revenue range fell short of what analysts had modelled, and the earnings forecast was roughly 40% below expectations. Intel also guided non-GAAP gross margin to 38.0% for the fourth quarter, a marked step down from the 44.1% reported in the third quarter.
Guidance matters more than a past quarter because share prices reflect what investors expect a company to earn next. A beat on the quarter just ended can be forgotten quickly if the next quarter looks weaker, and that is what happened here. Reporting after the release repeatedly made the same point: the third-quarter beat was real, but the fourth-quarter outlook, and the warning about the PC market that came with it, overshadowed it. Intel's own release was careful to frame the outlook as estimates at the midpoint of the revenue range, and to warn that actual results could differ materially. Investors, in after-hours trading, priced in the weaker outlook first and asked questions later.
Reason 2: The PC Slowdown Is Expected to Last Into 2027
The second reason is the PC market itself. Zinsner said Intel saw the PC slowdown continuing at least through the first half of next year, meaning the first half of 2027. Client Computing and Physical AI, the division that sells processors for personal computers, is still Intel's largest division by revenue, so a long PC downturn weighs directly on the company's biggest earner. Its revenue fell 5% to $8.1 billion in the third quarter, and reporting on the results noted that the division missed analyst expectations by roughly $700 million.
Ahead of the results, Wedbush had flagged the same pressure, noting that research firm IDC estimated PC shipments fell about 20% year over year in the quarter as rising memory costs pushed up prices. Memory and substrate costs, the boards that carry chips, were still rising, according to that pre-earnings reporting. Intel's answer, in Tan's words, is disciplined investment in capacity and working capital to increase supply and support future growth, while prioritising server CPU supply where demand is strongest. That is a longer-term fix, though, and it did not change the near-term picture: a PC market expected to keep shrinking into the second half of 2027, in Intel's own assessment as reported after the release.
Reason 3: The Kiryat Gat Factory Explosion Cut Supply
The third reason was a production disruption that had nothing to do with demand. Reuters reported that an explosion in October at Intel's Kiryat Gat factory, or fab, in Israel killed two people and seriously injured one, according to local media reports, and shut the facility down for about two weeks. Finance chief David Zinsner told Reuters that Intel planned to start ramping production back up at the facility by the end of the week of the earnings release, and that the company was still assessing which wafers could be salvaged for use and sale.
The financial cost was concrete. Zinsner said the explosion would cost roughly $600 million in lost revenue over two quarters, with the fourth-quarter revenue outlook reduced by roughly $300 million and gross margins reduced by about 200 basis points, or two percentage points, with a similar revenue impact expected in the first quarter. Reuters reported that the Kiryat Gat fab largely produces data centre chips using Intel's 10-nanometre manufacturing process, which made the shutdown awkward timing: it hit supply of the very server chips Intel says are in extraordinary demand. The explosion was therefore not a side story. It directly reduced the revenue and margin figures in the guidance that disappointed investors, and it added a supply constraint on top of a demand slowdown in PCs.
Reason 4: Intel Stock Down Despite 78% Data Centre Growth
The fourth reason is a paradox that explains why good news did not save the shares. Data Center and AI revenue of $7.3 billion, up 78% year over year, was the strongest part of the report, and Zinsner called it the strongest data centre revenue growth in 15 years. Tan said demand for CPUs remained robust and that unlocking more supply for Xeon processors was the immediate priority. Intel Foundry also grew strongly, with revenue up 58% to $6.7 billion, and the company reported progress including the release of the Intel 14A 0.9 process design kit in October and a collaboration with ASML to accelerate readiness for high numerical aperture extreme ultraviolet manufacturing. ASML had itself reported record sales as AI chip demand outran supply, and Samsung reported a record quarterly profit on the AI chip boom, so Intel was reporting into a market where AI-related chip demand was plainly strong.
Strong demand, however, is only helpful if a company can supply it profitably and on time. Intel's problem, as the market read it, was that the fastest-growing part of the business was supply-constrained, partly because of the Kiryat Gat shutdown, while the largest part of the business faced a long PC slowdown and rising costs. The company also reported a $23 billion public equity offering completed in the quarter to support future growth, plans to acquire Classiq, a quantum software company, and a multiyear collaboration with Oracle to expand Xeon-based computing on Oracle Cloud Infrastructure. Those are long-term building blocks. On the night, investors weighed them against a fourth quarter that looked weaker on revenue, earnings, and margin, and the weaker outlook won.
Reason 5: Chip Stocks Fell With Intel in After-Hours Trading
The fifth reason is that Intel did not fall alone, and the wider sell-off fed on itself. Reuters reported that Intel's fall took other large chip stocks down in post-close trading, with AMD dropping 4% and Broadcom falling 2% in the after-hours session, while the Direxion Daily Semiconductor Bull exchange-traded fund fell 9%. The semiconductor index had already fallen 1.4% in the regular session after a difficult earnings report from Alphabet, Google's parent company, the previous day. One trader quoted by Reuters put it bluntly: in the less active post-market session, investors chose to sell first and ask questions later.
The Alphabet comparison matters because it shows the mood of the week. Alphabet's shares had dropped sharply after its own earnings, as investors focused on the cost of building AI infrastructure, and Intel's weak guidance landed in the same cautious market. That does not mean Intel's problems were the same as Alphabet's, and analysts quoted after the Intel release stressed that weakness in PCs, an area that draws less scrutiny than the AI buildout, did not necessarily mean big problems for chipmakers more focused on AI. But in after-hours trading, with fewer buyers and sellers, a weak guide from a major chipmaker was enough to drag the sector lower for the night, which in turn made Intel's own fall look larger and harder to reverse before the next regular session.
What Happens Next for Intel Stock?
What happens next depends on three tests that Intel itself set out in its release and in the comments around it. The first is supply: whether the Kiryat Gat fab ramps back up on the schedule Zinsner described, and whether the wafers damaged in the explosion can be salvaged, will decide how much of the roughly $600 million revenue impact is recovered and how quickly. The second is the PC market: Intel expects the slowdown to continue at least through the first half of 2027, so investors will watch each quarter for signs that the decline is easing, and for whether Client Computing revenue stops falling. The third is whether data centre and foundry growth can keep outrunning those headwinds, with Xeon supply, the 14A process, and foundry customer wins as the markers to follow.
For readers following the story, the honest summary is that Intel reported a genuinely better third quarter than expected, and then guided to a genuinely weaker fourth quarter than expected, with a factory explosion and a long PC slowdown behind the weaker guide. The Intel stock down reaction reflected the guide, not the quarter just ended. The next regular trading session, and then the fourth-quarter results in early 2027, will show whether investors were right to price in that weaker outlook, or whether the data centre growth that drove the third quarter reasserts itself. This article is news reporting, not investment advice, and share prices can rise as well as fall.
Sources: Intel Q3 2026 financial results press release, Intel Investor Relations, 29 October 2026; Reuters reporting on Intel shares, the Kiryat Gat factory explosion, and chip-stock moves after hours, via syndicated reports; Morningstar and Dow Jones Newswires reporting on Intel's third-quarter profit and fourth-quarter guidance; Associated Press earnings snapshot on Intel's third-quarter results. Where after-hours share-price prints differed during the evening, this article reports the range and attributes the figures.