Broadcom Stock Falls After Q3 Earnings as Margin Outlook Offsets AI Surge

Key Takeaways

• Broadcom shares fell in after-hours trading despite record fiscal Q3 revenue of $29.6 billion and adjusted EPS of $3.32.
• AI semiconductor revenue surged 221% year over year to $16.7 billion, while management forecast further growth to $21.7 billion in Q4.
• Q4 revenue guidance of $34.8 billion was slightly above—not below—market expectations, but projected margin compression tempered enthusiasm.

Broadcom Shares Fall in After-Hours Trading

source: googlefinance

Broadcom shares slipped in extended trading on Wednesday, September 2, despite the semiconductor and infrastructure software group reporting record fiscal third-quarter results driven by accelerating demand for custom artificial intelligence chips.

The company generated revenue of $29.59 billion for the quarter ended August 2, representing an 86% increase from a year earlier. Adjusted earnings reached $3.32 per share, up 96% year over year. Both figures exceeded Wall Street estimates of approximately $29.24 billion in revenue and $3.22 in adjusted EPS.

Broadcom stock fell as much as approximately 3% following the release after closing the regular session 0.7% lower at $367.24. The initial reaction suggested that investors were focusing less on the strong headline numbers and more on margins, expectations and the sustainability of Broadcom’s rapid AI expansion.

Broadcom Reports Record Q3 Revenue and Profit

source: Broadcom Q3 Earnings Report

Broadcom’s fiscal Q3 revenue increased to $29.59 billion from $15.95 billion in the same period last year. GAAP net income more than tripled to $13.09 billion, while diluted GAAP earnings climbed to $2.68 per share from $0.85.

Adjusted operating income rose 92% to $20.10 billion, producing an adjusted operating margin of approximately 67.9%. The company also generated $14.20 billion in operating cash flow and $13.67 billion in free cash flow, equivalent to 46% of quarterly revenue.

Semiconductor solutions remained the main growth engine. Segment revenue jumped 127% year over year to $20.84 billion and accounted for 70% of total sales. Infrastructure software revenue increased 29% to $8.75 billion, contributing the remaining 30%.

Broadcom finished the quarter with $24 billion in cash and cash equivalents, up from $19.6 billion in the previous quarter. The company also paid down $5.6 billion of long-term debt during Q3 and repaid a further $1.5 billion after the quarter ended.

AI Semiconductor Revenue Surges 221%

AI semiconductor revenue reached $16.7 billion, increasing 221% from the same quarter last year and 54% sequentially. The business represented approximately 56% of Broadcom’s total revenue.

Custom AI accelerators, also known as XPUs, accounted for 73% of AI semiconductor sales during the quarter. The remaining revenue was generated primarily by networking products used to connect chips and servers inside large AI data centres.

Broadcom began shipping several new generations of custom accelerators during the quarter. These included chips developed for Google, Anthropic and OpenAI. Production shipments of Meta’s custom inference accelerator are expected to begin during Q4.

The company expects AI semiconductor revenue to accelerate to $21.7 billion in the current quarter, representing growth of 236% year over year. That forecast would lift full-year fiscal 2026 AI revenue to approximately $58 billion, above the company’s previous guidance of $56 billion.

Management also presented an aggressive longer-term outlook. AI semiconductor revenue is projected to double to approximately $115 billion in fiscal 2027 before doubling again to $230 billion in fiscal 2028.

These targets are supported by customer commitments and secured semiconductor supply, but they remain forward-looking estimates. Their achievement will depend on manufacturing capacity, access to high-bandwidth memory, data-centre availability and whether customers deploy infrastructure on schedule. Broadcom Q3 earnings call transcript

Q4 Revenue Guidance Was Slightly Above Expectations

Broadcom forecast fiscal Q4 revenue of approximately $34.8 billion, which would represent a 93% increase from a year earlier. The figure was slightly above the market consensus of about $34.68 billion rather than below the roughly $35 billion estimate cited in some early reports.

Within the guidance, semiconductor revenue is expected to reach approximately $26.1 billion. Infrastructure software revenue is forecast at $8.7 billion, broadly stable compared with Q3.

The revenue outlook therefore did not provide an obvious reason for the after-hours decline. The more significant concern was Broadcom’s forecast for an adjusted operating margin of approximately 66%, down from 67.9% in Q3.

Gross margin is also expected to decline to around 73%, compared with 75% in the third quarter and 78% a year earlier. Management attributed the pressure to the growing share of custom AI accelerators in Broadcom’s revenue mix, particularly chips containing larger amounts of expensive memory.

AI products are producing exceptional revenue growth, but a heavier semiconductor mix dilutes Broadcom’s consolidated margins because its infrastructure software business carries much higher profitability. Infrastructure software recorded a gross margin of approximately 94% during Q3.

Why Did Broadcom Stock Fall After Earnings?

Broadcom’s share-price reaction appears to have reflected high investor expectations rather than weak operating results. The company beat quarterly estimates, delivered record cash flow and issued revenue guidance slightly above consensus.

However, the rapidly expanding AI business has raised the standard required to produce a positive market reaction. Investors may have been looking for a larger Q4 revenue beat, stronger margin guidance or evidence that Broadcom could exceed its longer-term AI targets.

The sequential reduction in projected operating margin also showed that revenue growth will not automatically translate into earnings growth at the same rate. Broadcom plans to increase Q4 capital expenditure to approximately $1.4 billion as it invests in semiconductor capacity, up from $532 million in Q3.

The decline could therefore be described as a sell-the-news reaction, although the term should be used cautiously. Broadcom shares were already about 26% below their June high before the report and had gained only modestly during 2026, meaning the stock was not entering the results at a fresh record.

Broadcom’s AI Outlook Remains the Main Focus

The central issue for Broadcom is whether it can execute against its rapidly expanding AI order pipeline while protecting margins and managing supply constraints.

Demand from Google, Anthropic, OpenAI and Meta provides substantial revenue visibility, but it also creates customer-concentration risk. Changes in capital spending, chip strategies or deployment schedules at a small number of major AI customers could have a material effect on future results.

Supply will be another important factor. Broadcom must secure sufficient advanced wafers, substrates, packaging capacity and high-bandwidth memory to support its fiscal 2027 and 2028 targets. Management indicated that customer demand could exceed the current $115 billion forecast for fiscal 2027, but production capacity may limit how quickly that demand converts into recognised revenue.

The wider market environment remains uncertain as elevated Treasury yields and Middle East tensions affect technology-stock valuations. However, US equities finished Wednesday higher and the 10-year Treasury yield eased slightly to approximately 4.78%, suggesting Broadcom’s after-hours decline was primarily company-specific rather than part of a broad technology sell-off.

Broadcom’s Q3 report confirmed that its custom AI chip business is expanding at an exceptional pace. For the stock, the next test will be whether that growth can continue while margins stabilise and management delivers on its increasingly ambitious multi-year forecasts.