Broadcom slides as Marvell-Google deal reshapes AI chip race
Broadcom ($AVGO) shares came under pressure on Wednesday, August 19, 2026, after Marvell Technology ($MRVL) disclosed an expanded partnership with Google covering custom AI accelerators, networking, storage, and memory. The news signals a competitive shift in the custom silicon market, where Broadcom has long been a dominant player.
Marvell-Google Expansion Threatens Broadcom’s Custom AI Dominance
According to a Marvell press release dated August 18, 2026, the company will supply Google with a broader range of custom silicon for its TPU-related AI accelerators, extending beyond compute to include networking, storage, and memory components. This marks a significant deepening of the relationship between Marvell and Google, which already collaborated on previous TPU generations.
Analysts view this as a direct challenge to Broadcom, which has been a key supplier for Google’s TPU program. The expanded scope means Marvell will capture more of the value chain, potentially reducing Broadcom’s share of Google’s custom chip spending.
Broadcom’s AI Revenue Concentration Raises Stakes
Broadcom’s AI-related revenue has grown rapidly, reaching $13.2 billion in fiscal 2025, up 157% year-over-year, according to the company’s December 2025 earnings report. A substantial portion of that comes from custom accelerators for hyperscale customers, including Google.
If Google shifts more of its TPU-related silicon to Marvell, Broadcom could face a meaningful revenue headwind. The company’s fiscal 2026 guidance, issued in March 2026, projected AI revenue of $20 billion, but that estimate may now be at risk if Google reduces orders.
Market Reaction: AVGO Down, MRVL Up
In early trading on Wednesday, Broadcom shares fell 4.2% to $214.50, while Marvell shares rose 7.8% to $112.30. The move reflects investors’ reassessment of the competitive landscape in custom AI chips.
Broadcom’s decline also pressured the broader semiconductor sector, with the iShares Semiconductor ETF (SOXX) down 1.3%. However, Marvell’s gain suggests investors see the Google deal as a positive for the company’s long-term growth.
Why This Matters for AI Supply Chains and Investors
The custom chip market is becoming increasingly contested as hyperscalers like Google, Amazon, and Microsoft seek to diversify suppliers and optimize costs. Marvell’s expansion into networking, storage, and memory for Google’s TPUs means it will have a more integrated role, potentially leading to higher content per device.
For investors, this highlights the importance of supplier relationships in AI infrastructure. Broadcom’s reliance on a few key customers makes it vulnerable to shifts in their sourcing strategies. Conversely, Marvell’s ability to expand its footprint with a major hyperscaler could drive sustained revenue growth.
Data from the latest quarter, reported in May 2026, showed Marvell’s data center revenue up 34% year-over-year, driven by custom silicon programs. The Google expansion is likely to accelerate that trend.
What to Watch: Google’s Next TPU Order and Broadcom’s Guidance
Investors should monitor two key signals: Google’s next TPU generation announcement and Broadcom’s fiscal Q3 earnings report, expected in September 2026. If Broadcom lowers its AI revenue outlook or discloses reduced Google orders, the bear case will strengthen. Conversely, any indication that Google is still relying on Broadcom for other custom components could cushion the blow.
The next concrete data point will be Google’s Cloud Next conference in October 2026, where TPU details often emerge. Until then, the market will weigh the potential revenue shift and its implications for both companies’ valuations.
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