Broadcom Q3 FY2026: Revenue Nearly Doubles to $29.6B as AI Chip Sales Triple, But Q4 Guidance Trails Street
Broadcom reported third quarter fiscal year 2026 revenue of $29.6 billion on September 2, 2026, an 86 percent increase from the prior year period. The figure edged past analyst expectations, with Reuters noting total revenue of $29.59 billion beat consensus. GAAP operating income came in at $16.0 billion, according to the company's official release. Earnings per share reached $3.32, per CNBC's reporting.
The standout line item was AI chip sales, which more than tripled to $16.7 billion, Reuters reported. That puts Broadcom's AI-related silicon at roughly 56 percent of total quarterly revenue, a proportion that has shifted the company's revenue mix materially toward accelerator-class chips and away from its legacy networking and broadband franchises. The 86 percent year-over-year top-line growth, while inflated by the cumulative effect of large acquisitions including the VMware close, nonetheless reflects organic acceleration in the AI segment that is operating at a different order of magnitude from the rest of the portfolio.
The broader context here is that Broadcom has become one of the primary alternative suppliers of custom AI accelerators and networking fabric to hyperscale data center operators, positioning it as a credible second source behind Nvidia's vertically integrated CUDA ecosystem. The tripling of AI chip revenue to $16.7 billion in a single quarter provides a concrete data point on how much spending is flowing to non-Nvidia silicon, even if the company does not break out unit volumes or customer concentration.
Guidance, however, is where the reception cooled. Broadcom issued fourth quarter fiscal year 2026 revenue guidance of approximately $34.8 billion, representing 93 percent year-over-year growth but falling below the LSEG consensus of $35.03 billion that CNBC cited. The roughly $230 million gap between company guidance and Street expectations is modest in absolute terms, but the direction matters: this is a company that just beat Q3 estimates, yet chose to guide Q4 below consensus. For a stock priced on forward momentum, a guide-down relative to sell-side models typically pressures the shares in the immediate aftermath, regardless of the absolute growth rate.
The 93 percent projected Q4 growth rate is itself worth parsing. A portion of that year-over-year figure reflects the anniversary of the VMware acquisition closing, which means sequential comparables are not clean. Investors tracking organic growth rather than reported growth will need to adjust for the contribution from acquired revenue. The company has not, in the verified materials released, broken out organic versus inorganic growth for the quarter or the guidance period.
Looking at the margin structure, GAAP operating income of $16.0 billion against $29.6 billion in revenue implies a GAAP operating margin of roughly 54 percent. That is a high figure for a semiconductor company, though Broadcom's blended semiconductor-plus-software model, post-VMware, carries a structurally different cost profile than a pure-play chip firm. Whether that margin holds as the revenue mix tilts further toward AI silicon, which carries its own design and customer-support cost dynamics, is a question the Q3 print alone cannot answer.
For savers and investors watching the semiconductor complex, Broadcom's results offer two simultaneous signals. The AI infrastructure buildout continues to generate extraordinary revenue growth for the suppliers enabling it. But the gap between Q4 guidance and analyst consensus introduces a note of caution about whether the pace of upside surprises is moderating, even as absolute growth rates remain in the high-double and triple-digit range. The distinction between "growth is decelerating" and "growth is decelerating relative to expectations" is where most of the near-term trading and positioning risk sits.
