Broadcom Will Lend Anthropic Up to $42 Billion for Chip Leases

Nvidia sells suits off the rack. Broadcom measures you, cuts a bespoke pattern, and keeps it for next season. That difference just turned the second company into a lender. Anthropic's IPO prospectus, first reported by Reuters, shows Broadcom has agreed to lend the AI lab up to $42 billion against chip leases. That number tells you where the AI trade goes next.

Broadcom designs the custom AI chips that hyperscalers and AI labs order instead of buying Nvidia's off-the-rack GPUs. They're XPUs, or ASICs: accelerators built to one company's spec. Underneath sits Broadcom's networking silicon — the switches and optical links that stitch thousands of chips into one machine — plus the infrastructure software beneath it.

Here's the deal. The $42 billion is convertible — Broadcom could designate a financing partner, and the notes could convert into Anthropic shares. Anthropic says it doesn't expect any notes to be sold before it completes its IPO. The cash covers roughly one-third of the $125.2 billion Anthropic has committed to a five-year TPU capacity lease, supplied by Google and Broadcom from 2027.

Anthropic is expected to become the largest customer in Broadcom's custom-chip business in 2027. Management says it's on track to be the largest XPU customer in 2027 and to sustain that in 2028. The scale shows up: total revenue of $29.6 billion last quarter, AI semiconductor revenue of $16.7 billion, up 221% year over year. Broadcom's AI roadmap runs from $58 billion this fiscal year to roughly $115 billion next year and $230 billion the year after.

Here's the mechanism that matters. Broadcom frames each gigawatt of AI capacity as about $30 billion of annual revenue at maturity. Google's Ironwood TPU lands at one gigawatt in 2026, TPU v8i scales to five gigawatts in 2027, and ten more gigawatts arrive in 2028. Convert those and you see why the stock doesn't trade on this quarter's earnings. It trades on whether the gigawatts get built — and, increasingly, on whether Broadcom's customers can pay for them.

That's the re-rating question. Broadcom used to sell chips and book the order. Now its revenue depends on its customer's ability to pay, so the market must decide whether $42 billion of convertible credit is backlog or balance-sheet risk. The bull case says funding unlocks otherwise stalled demand. The bear case says the supplier is quietly underwriting the purchase. Same facts, two very different multiples.

Is the market pricing it right? It's pricing the story, not the risk. The shares change hands around 44 times trailing earnings against roughly 18 times forward. Gross margin has slipped on the richer AI mix. Bulls are told to stop watching it.

Customer concentration is the first crack. Anthropic becomes customer number one in 2027, OpenAI number two, and CEO Hock Tan has acknowledged Google is "looking elsewhere."

Then comes the circularity. If you've ever financed a car through the dealership that sold it to you, you've lived a tiny version of this. Broadcom lends Anthropic up to $42 billion to lease Broadcom-designed chips while separately backstopping the Apollo and Blackstone vehicle up to $29 billion. The supplier is financing the buyer.

The counterparty is the harder problem. Anthropic carries roughly $161.2 billion of largely non-cancelable Broadcom-related lease obligations, and it's pre-IPO, so that credit is a promise, not a balance sheet you can inspect. Convert a $42 billion note into equity and you're holding dilution risk too. Stack that under a stock near 44 times trailing earnings while forward multiples imply roughly half. The setup then looks less like a moat and more like leverage. The number that proves the bears right: the notes never actually get sold after Anthropic's IPO.

That unease has a name. Robert Leitao is a managing partner at Rothschild & Co, and he put it plainly. "It feels that there's quite a concentrated bet right now on two companies being able to generate enough revenues to support all the financing that's happened." Seaport Research analyst Jay Goldberg described the pressure. He said, "Nvidia is putting in place a massive amount of its balance sheet, and Broadcom is having to follow suit."

Watch the Q4 FY26 print and its AI semiconductor guide of $21.7 billion. That number tells you whether the gigawatt pipeline is converting into revenue on schedule, or whether Broadcom's biggest bet is still waiting on a customer that hasn't gone public yet. Either way, the tailor just became the bank. The whole AI trade now has to price that.

Disclosure: The Signal holds no position in AVGO. Positions may change. This is not financial advice.