Anthropic confidentially filed a draft S-1 with the SEC on Monday, June 1 -- the paperwork that gives a company "the option to go public" once the SEC finishes its review. The maker of Claude raised $65 billion last week at a $965 billion post-money valuation, roughly 2.5x its February valuation of about $380 billion and ahead of OpenAI. Anthropic reports an annualized revenue of about $47 billion, driven heavily by Claude Code, its AI coding assistant. The company is structured as a Public Benefit Corporation, with AI safety written into its founding charter.

1. The Fundamentals Justify It (the bull case)

$47 billion annualized, growing fast, in the biggest market shift in a generation. The math works.

Forty-seven billion isn't a narrative -- it's a legit P&L line. Anthropic's Claude Code business is booming, the valuation rose 2.5x in three months because actual deployments did too, and a near-trillion mark is roughly 20x revenue for a software company that owns one of two leading models.

Filing first is its own advantage. Kat Liu, VP at IPO research firm IPOX, said the timing lets Anthropic "capitalize on strong investor interest in AI and growth stocks while the window remains favorable" -- and analysts note that getting ahead of SpaceX and OpenAI sets the comparable everyone else has to argue against.

2. Dot-Com 2.0 (the bear case)

Trillion-dollar valuations on companies still losing money is the cleanest bubble setup in 25 years.

Anthropic, OpenAI, and SpaceX are all losing more than they make. Confidential S-1s are confidential precisely because they don't have to show the cash burn yet; once the SEC review forces disclosure, the public will see the actual margins on a $965 billion mark.

The line that's spreading in IPO circles. Harrison Rolfes, a senior late-stage research analyst at PitchBook, told CNN the 2026 IPO window "either becomes the most consequential IPO cycle since the dot-com era or the most expensive lesson in narrative-versus-fundamentals that public markets have ever taught."

3. Going Public Ends the Safety Mission (the structural read)

A PBC can survive a Series H. It probably can't survive a quarterly earnings call.

Going public legally and culturally tilts toward the shareholder. Anthropic's founders set up the PBC structure precisely to keep short-term profit motives from overriding safety; a dual-class share setup can buffer the law but not the dynamic.

Amodei has already said it's hard. The CEO conceded the company is "under an incredible amount of commercial pressure" and that the safety mission makes things "even harder for ourselves" -- which is now the message he'll have to deliver to public-market analysts on rolling 90-day intervals.

Where This Lands

Anthropic is filing to go public worth more than OpenAI, with $47 billion in annualized revenue and a charter that says "safety first." The bulls say the revenue is real and the AI window is open now; the bears say a trillion-dollar IPO of a company still losing money is the cleanest dot-com setup the market has produced; and the structural camp says the PBC mission can survive a Series H but probably not a quarterly earnings call.

Sources