❯ Broadcom’s Q3 AI semiconductor revenue jumps 221% to $16.7 billion, but Q4 guidance falls short

the numbersBroadcom posted third-quarter revenue of $29.59 billion, up 86% year over year and ahead of the $29.36 billion expected, with AI semiconductor revenue of $16.7 billion, up 221% year over year and 54% sequentially, beating the $15.2 billion average estimate. Adjusted earnings came in at $3.32 a share, also above consensus. A year earlier total revenue was just $15.95 billion.

soft guidanceThe problem is next quarter: Broadcom guided to $34.8 billion in Q4 revenue against the $35.03 billion analysts wanted, and the stock slipped. The miss is small, but at current valuations tolerance for anything short of a beat is close to zero. A second number points the other way — Q4 AI chip revenue is forecast to reach $21.7 billion, implying 236% growth. The AI line is accelerating; what is holding the company back is everything else.

the custom silicon pathBroadcom builds custom accelerators for hyperscalers, a customer list that includes the same companies designing their own chips, Google and Meta among them. That $16.7 billion is still a distance from Nvidia’s $96.2 billion quarter, but the growth rates are 221% against 106%. Anyone tracking how fast in-house silicon substitutes for merchant GPUs can read this quarter plainly: custom chips are no longer a supplement to Nvidia but a market growing into itself at triple speed. The soft Q4 guide is a reminder of the other half — the non-AI semiconductor cycle has not come back.

▪ SIGNALAI chip revenue tripled while total guidance missed, which says the non-AI business can no longer carry this company’s own valuation.