4 SEP 2026 — Broadcom's AI chip revenue rose 221 per cent to $16.70 billion in the third quarter. Total revenue rose 85.5 per cent to $29.59 billion, net income rose 216 per cent, and the stock fell about 4.4 per cent. The fall was driven by fourth-quarter guidance of roughly $34.80 billion, below the $35.03 billion consensus. That gap is about $230 million on a quarter guided to grow 93 per cent.
The quarter as reported
Revenue of $29.59 billion beat the $29.44 billion consensus by 0.53 per cent. Adjusted earnings of $3.32 a share beat $3.24 by 2.53 per cent. It was the ninth consecutive quarter in which Broadcom has beaten expectations.
Semiconductor Solutions reached $20.84 billion, up 127 per cent, and is now 70 per cent of the company. Within it, AI chips at $16.70 billion were up 221 per cent on the year and 54 per cent on the previous quarter. Operating income rose 171 per cent to $15.96 billion and free cash flow was $13.66 billion, equal to 46 per cent of revenue.
Guidance for the fourth quarter is about $34.80 billion of total revenue, up 93 per cent, with AI chips at $21.70 billion, up 236 per cent. Chief executive Hock Tan's summary was that "Q3 demand was simply hot and we're just getting started".
A quarter of a per cent, in the other direction
Put the two misses side by side. The company beat this quarter's revenue by 0.53 per cent and guided next quarter 0.66 per cent below where analysts had it. On the numbers, those are the same size.
The market's reaction was not about arithmetic. A reported number is history; a guidance number is a statement about the future. A shortfall in guidance implies management knows something, and that is an expensive inference for a stock valued on continued acceleration.
The reaction is hard to defend against the base numbers. Guidance of $34.80 billion is 93 per cent growth, against analyst models of 94 per cent. The entire disagreement is over the second digit of a near-doubling.
The figures that describe the business are further out
Broadcom said it has secured supply to support roughly $115 billion of AI revenue in fiscal 2027 and $230 billion in fiscal 2028, and pointed to earnings above $30 a share in that later year. Either figure dwarfs the quarter just reported.
They also need to be read precisely. Secured supply is not booked orders. It means the manufacturing capacity, packaging and memory have been contracted for, so the constraint on delivering that revenue is no longer whether the parts can be made. It does not mean customers have committed to buy them.
That distinction is the whole risk. A company that has locked in capacity for $230 billion of revenue and then sees demand soften still owns the capacity. In a rising market the disclosure reads as confidence; in a falling one, as exposure. The sentence is identical either way.
Custom silicon is a concentrated business
Broadcom's AI revenue is not spread across a broad market. It comes from custom accelerators built for a small number of very large customers that want an alternative to merchant parts, plus the networking silicon that connects them.
Concentration of that kind produces exactly the growth rates above, because a single customer's programme moving from design to volume can triple a line. It also means a single customer's decision to slow, redesign or switch removes a large share at once, and the customer list is not disclosed.
The risk is not that AI demand will disappear, but that Broadcom's revenue depends on a few procurement decisions inside a few large, undisclosed customers. A quarterly report reveals nothing about how those are going. We noted a version of this when Nvidia began licensing NVLink so rivals' chips could run on its fabric: the fight is over whose interconnect the racks are built around, and custom silicon competes inside that decision rather than around it.
Why the reaction still tells you something
None of this makes the share price move irrational. It makes the stock a statement about expectations, not about performance.
A stock priced for acceleration has to keep accelerating. The market's response to a 93 per cent guide is the clearest available evidence of what is already assumed. When the reward for tripling a business is a 4.4 per cent decline, the tripling was in the price.
The useful signal from this cycle's semiconductor results is that growth figures alone have stopped being informative. Every company in the AI supply chain is posting huge numbers. What moves valuations is the difference between the growth delivered and the growth already assumed, and that second number is not in any filing.
What to check next quarter
Three things would change the picture, and only one of them is a growth rate. First, whether the commentary keeps citing the secured-supply figures for fiscal 2027 and 2028, revises them or drops them. Second, whether AI revenue can sustain 54 per cent quarter on quarter, which is the hardest number here to repeat. Third, whether Broadcom discloses anything at all about customer concentration.
The last of those matters most and is least likely to arrive. Until it does, an investor in this business is taking a view on a customer list they cannot see, on the strength of capacity commitments made against demand nobody outside the company has been shown.
