Anthropic's IPO Bet: $80 Billion in Losses Against a Trillion-Dollar Story

Anthropic filed for an IPO on Monday that could become the largest initial public offering in history — despite losing more than $80 billion in the first half of the year. Investors are already pricing the five-year-old company's potential market cap in the trillions, a category reserved for the world's most valuable businesses. The filing puts the Claude creator on a path that could decide how public markets value the entire AI sector.

The stakes extend well beyond one company. The AI boom has been driven largely by two firms: Anthropic and OpenAI. OpenAI has confidentially filed to go public but has said a debut likely won't come until 2027. Meanwhile, the market is showing jitters on the AI trade: neoclouds (smaller cloud providers selling AI compute) and data center companies have been getting pummeled, prompting Australia's Firmus to withdraw its IPO plans and SK Hynix's U.S.-based Solidigm unit to do the same. Anthropic's offering is now the test case for whether the private AI valuations of the past three years can survive contact with public markets.

What do the numbers actually say?

Anthropic's pitch asks investors to look past the losses and focus on growth. Second-quarter revenue soared to $11.56 billion from $787 million a year earlier — a 14-fold increase. The company held almost $132 billion in cash, equivalents and short-term investments at the end of June. And after five quarters of operating losses, it reported $974 million in operating income for the second quarter.

That swing to profitability is the number the prospectus leans on. It is also, so far, a single quarter.

"If It underperforms expectations, it'll be a little bit of a house of cards," said Jai Das, co-founder of Sapphire Ventures, whose tech investing career dates to the 1990s.

Rohit Kulkarni, partner and chief AI officer at Burnham Park Capital Markets, was more measured on the financials. "It is, I think, better than feared," he said. "There could have been more negative tidbits."

A single quarter of operating income against $80 billion in first-half losses is a narrow foundation for a trillion-dollar valuation; the prospectus, notably, does not promise the profitability will hold.

Who is Anthropic actually tied to?

The company's business is deeply entwined with the tech megacaps. Close to half its revenue comes from Claude being sold through the cloud divisions of Microsoft, Amazon and Alphabet — all of which hold investments in Anthropic. The circularity does not stop there:

• Some $77 billion in notes can be issued to Amazon, Broadcom and Google as part of the IPO.
• Microsoft and Nvidia agreed to invest $15 billion as Anthropic builds out computing capacity.
• Chips from Nvidia, AMD, Amazon and Google power the company's development.
• Alphabet, with its investment-grade credit rating, committed to backstopping a data center in Texas.
• Broadcom is creating financing pools to help Anthropic and OpenAI deploy high-performance models, CEO Hock Tan told analysts earlier this year.

Cloud providers are ratcheting up capital expenditures to meet demand, and memory manufacturers are fighting shortages as they prioritize AI chips. For public market investors, more than one-third of the S&P 500's value comes from tech's trillion-dollar companies, all going deep into AI to varying degrees. Software giants Adobe and Salesforce have integrated Claude into their products. In plain words: if Anthropic stumbles, the pain will not stay contained within Anthropic.

Why does the private market need this to work?

Private market check sizes have ballooned while IPOs remain few and far between. Bessemer Venture Partners and Menlo Ventures both told CNBC that Anthropic is their biggest investment ever. That concentration is precisely why a weak debut would ripple outward.

"If they don't perform well, they will become the bellwether for AI," said Brad Bernstein, a managing partner at growth equity firm FTV Capital. "Their valuation will reflect that performance variation, and then it'll just be a trickle-down effect to all the stuff going on with the excess capital that's getting poured into the venture AI world. Everything is going to have to sort of be reset."

Anthropic will be only the third company to go public with a valuation above $1 trillion, after Saudi Aramco and Elon Musk's SpaceX, which debuted in June. OpenAI could be the fourth — or could be pushed out further if Anthropic's debut disappoints.

What about open-weight competition?

One concern in parts of the investing world is the rise of open-weight models (models whose downloadable parameters anyone can run and customize), which are cheaper for businesses to access and offer flexibility in where they are deployed. In the prospectus, Anthropic named only two competitors — OpenAI and Google — while acknowledging competition from a "broader set of model providers," including open-weight and open-source models.

Anthropic frames the market as barely started: Fortune 500 companies committed less than 0.1% of their total expenses to its models and services in the latest quarter. Michael Monaghan, portfolio manager at Founder ETFs, counts that as part of the thesis rather than a warning sign.

"I think there's going to be room for frontier models like Anthropic and OpenAI and SpaceX, and I think there will be room for open-weight models," Monaghan said. "It's way too soon to say that one is going to disintermediate the other."

The pattern at Anthropic's own customers complicates the frontier-only story. Snowflake CEO Sridhar Ramaswamy praised the frontier labs in unqualified terms — "Anthropic and OpenAI have by now demonstrated their ability to stay at the frontier of AI and keep pushing innovation," he said, adding "we are very much rooting for them to be public and very successful companies" — yet Snowflake is simultaneously experimenting with low-cost open-weight models from China's Moonshot AI, DeepSeek and Zhipu. "We spend a lot on internal AI because we want to get as much efficiency as we can," Ramaswamy said. Cheaper models, in other words, are already inside the tent.

How big is the downside?

A lackluster debut could push out OpenAI's offering and force investors to rethink its lofty valuation. Rising interest rates are simultaneously making it costlier for companies to raise debt — a problem for a capital-intensive business model built on data centers.

David Trainer, CEO of financial research firm New Constructs, wrote in a report last month that the AI boom rests on the assumption that cheap credit and capital market access will be "readily available." "If AI liquidity dries up, and there are clear signs it is, we see large, 20%, downside risk in the S&P 500, with most of that concentrated in the valuation of AI-related stocks," Trainer wrote.

Industry insiders point instead to the technology itself. Claude Opus 5.5 Max performs better than any other model on the Artificial Analysis Intelligence Index, an industry benchmark. With hyperscaler (large cloud operator) spending on AI infrastructure set to reach into the trillions of dollars, Sapphire's Das acknowledged concern about a market glut but drew a comparison to the telecommunications and dot-com bubble of the late 1990s, when companies flooded the market with fiber-optic equipment. The infrastructure eventually got used, he noted — though plenty of companies went belly up in the interim.

"Long term, I don't think there is a lack of demand," Das said.

That historical parallel is meant as reassurance, but it carries its own warning: the fiber got used after the companies that laid it went under. Whether Anthropic's IPO prices the demand correctly — or repeats that sequence in fast-forward — is the question now facing both Wall Street and Silicon Valley.