Anthropic Is Reportedly Eyeing an October Nasdaq Debut at Over $1 Trillion — and Abu Dhabi Just Raised Its Bet

Anthropic has confirmed one real, documented fact: on June 1, 2026, the Claude maker confidentially submitted a draft S-1 registration statement to the U.S. Securities and Exchange Commission, the standard first step toward going public. Everything about when that IPO actually happens and at what price, however, is still circulating as market chatter, banker gossip, and prediction-market odds rather than anything Anthropic itself has put a number on. Readers should treat the figures below accordingly.

What's confirmed

Anthropic's own statement that it filed confidentially is real and on the record. A confidential S-1 doesn't guarantee a listing — it simply gives a company the option to go public once the SEC finishes its review, and Anthropic has said as much itself. As of early October, no public S-1 had surfaced on EDGAR, meaning there is still no ticker, no disclosed share count, and no official offering price.

The filing followed Anthropic's $65 billion Series H round in late May, reported by Bloomberg, which valued the company at $965 billion post-money — reportedly the first time Anthropic's valuation topped OpenAI's. That round was led by Altimeter Capital, Dragoneer, Greenoaks and Sequoia.

The rumor: a fall Nasdaq debut

Multiple outlets, citing people familiar with the process, report that Anthropic has been lining up investor meetings aimed at an October 2026 Nasdaq listing. Bloomberg reportedly described underwriters scheduling roadshow-style conversations around that window, but — and this is the key caveat — no formal roadshow announcement or public prospectus had followed as of this writing, and Anthropic has not confirmed an exact date. A Polymarket contract on the listing was reportedly pricing in strong odds of a 2026 debut, which is a sentiment indicator, not a fact.

Valuation chatter is similarly all over the place depending on the source: some banker estimates cited by Bloomberg put a debut valuation above $1 trillion as the "base case," while other reports — including one from Gulf-focused outlet AGBI — have floated figures as high as $2 trillion. AGBI's analysis suggested that even a modest 5% share sale at that scale could raise close to $100 billion. None of these numbers should be read as set; they're estimates from analysts and bankers speaking to reporters, not terms Anthropic has published.

The Gulf angle: Abu Dhabi doubles down, Riyadh stays out

This is where the story gets most interesting for regional readers. Abu Dhabi's MGX — the AI investment vehicle backed by sovereign wealth fund Mubadala and G42 — was reportedly part of Anthropic's $65 billion round, and according to Semafor, the UAE has been increasing its pre-IPO stake further still. Semafor also reports MGX now holds positions across all three of the leading U.S. frontier AI labs: Anthropic, OpenAI, and Elon Musk's xAI — a remarkable hedge across what are normally fierce rivals.

Separately, CNBC/NBC reported on a filing showing the FTX bankruptcy estate sold its majority stake in Anthropic for roughly $884 million, with the bulk of that stake reportedly going to a Mubadala-aligned buyer — specifically an entity called ATIC Third International Investment Co. Global SWF has estimated that Gulf sovereign funds have collectively committed something like $7.5 billion to Anthropic across its funding history, with Qatar Investment Authority and Alpha Wave also named as backers of an earlier $13 billion round.

Pointedly, though, CNBC's sources say Anthropic has specifically ruled out Saudi Arabia as an investor, reportedly over U.S. national-security sensitivities tied to frontier AI technology. If accurate, it's a notable split within the Gulf's usually parallel sovereign-wealth AI strategies — Abu Dhabi welcomed in, Riyadh kept at arm's length.

Why it matters

If even the more conservative end of the rumored valuation range holds, an Anthropic listing would rank among the largest tech IPOs in history, and would hand Gulf sovereign funds — chiefly Abu Dhabi's — a significant paper windfall on their early and expanding AI bets. It would also mark a second mega-cap AI listing on investors' radar this year following reports of SpaceX's roughly $1.25 trillion all-stock acquisition of xAI, a deal itself tied to a rumored SpaceX IPO.

For now, the honest summary is: the confidential filing is real; the October timing, trillion-dollar-plus pricing, and exact ownership stakes are coming from people-familiar-with-the-matter sourcing and analyst estimation, not from Anthropic. The company has stayed quiet on specifics, and a filing does not obligate it to list on any particular date — or at all.

What to watch: the appearance of a public S-1 on EDGAR will be the real signal that a date and price range are locked in. Until then, every number attached to this story — $1 trillion, $2 trillion, "October" — belongs in the rumor column.