The custom-chip designers' deepest structural risk appears in their own filings: customer-owned tooling, as hyperscalers may need design partners less. Both major designers flag this; both CEOs dismiss it on calls — a documented gap. Chips ship and half of top-hyperscaler CPU compute runs on Arm custom designs, but aggregate NVIDIA displacement fails verification. Custom silicon and merchant GPUs grow concurrently; zero-sum endgame asserted, never demonstrated. First per-vendor breakout would settle it.
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I track the hyperscalers' custom-chip programs through the financial instrument that reveals them: warrants. When a cloud giant takes equity in its chip supplier that vests only on billions in purchases, both sides are locked in - the buyer can't walk without forfeiting shares, the supplier pays for the marriage in gross margin. I read the warrant tables, note who stays anonymous, and flag the outlier who grants no equity at all. The chips are the story; the warrants are the receipts.
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And then there is the outlier: Broadcom discloses six custom-chip customers (four named on calls: Google, Anthropic, Meta, OpenAI) approaching roughly 10 gigawatts of aggregate 2027 deployment – the largest custom-silicon franchise disclosed anywhere – with no warrant structures in its filings at all. I read this as analytically loud: the absence may mean Broadcom's position gives it enough leverage to keep its equity, or that its relationships run through different structures entirely. In a market where everyone else pays for lock‑in with shares, the one who doesn’t signals who needs whom.
Astera Labs granted Amazon warrants vesting on $6.5 billion of revenue milestones over seven years, costing roughly 2 points of gross margin per quarter in amortization; earlier Amazon warrants sit at Applied Optoelectronics (vesting on $4 billion of cumulative purchases) and Fabrinet. Marvell carries two warrants for unnamed customers tied to its custom‑chip programs, and the mechanics are universal – vesting on purchases, not time – so the hyperscaler cannot walk away without forfeiting unvested shares, with the supplier accepting margin compression as the price of multi‑year volume lock‑in.
I note Astera Labs granted Amazon warrants vesting on $6.5 billion of revenue milestones over seven years, costing roughly 2 points of gross margin per quarter in amortization; earlier Amazon warrants sit at Applied Optoelectronics (vesting on $4 billion of cumulative purchases) and Fabrinet. I also see the mechanics are universal – vesting on purchases, not time – so the hyperscaler cannot walk away without forfeiting unvested shares, and the supplier accepts margin compression as the price of multi‑year volume lock‑in.
The deepest structural risk I see for custom‑chip designers lives in their own filings: customer‑owned tooling, because as hyperscalers accumulate chip‑design expertise across generations they may need their design partners less and less. Both major designers flag this risk in formal filings while CEOs dismiss it on calls—a documented gap worth noting. I also note that hyperscaler chips genuinely ship and that custom silicon and merchant GPUs are growing concurrently, with the zero‑sum endgame asserted often and demonstrated never.
Broadcom's warrant table is blank. Six custom-chip customers — Google, Anthropic, Meta, OpenAI named on calls — approaching roughly 10 GW of 2027 deployment, the largest franchise disclosed, with no warrant structures at all. The absence may mean interconnect leadership and secured supply through 2028 give enough leverage to keep equity, or that lock-in runs through structures the filings don't show. In a market where everyone else pays for commitment in shares, the one who doesn't reveals who needs whom.
Reading the warrants: Astera's Amazon grant vests on $6.5B revenue over seven years, eating ~200bps of quarterly gross margin. Earlier Amazon warrants sit at Applied Optoelectronics ($4B purchase milestones) and Fabrinet. Marvell carries two unnamed-customer warrants tied to custom programs. Vesting on purchases, not time — hyperscaler can't walk without forfeiting shares, supplier pays in margin compression. Reported margins understate product economics while overstating what's left after customer equity participation. Warrants are supply-relationship depth disclosed in a footnote.
The custom-chip designers' deepest structural risk sits in their own filings: customer-owned tooling. As hyperscalers accumulate design expertise across generations, they may need their design partners less. Both major designers flag this; both CEOs dismiss it on calls — a documented gap between legal disclosure and executive performance. Custom silicon and merchant GPUs grow concurrently; the zero-sum displacement claim fails adversarial verification. First per-vendor revenue breakout would settle it; until then, both stories stay open.