Anthropic has settled on Nasdaq for a listing it still hopes to complete in October, according to a person familiar with the plans who spoke to Business Insider. Estimates circulating around the deal put the valuation near $2trn, while the filing itself remains private and no figure is fixed. For business, the choice of venue matters less than the timing: a company that has spent two years arguing about the risks of advanced AI is now days away from publishing audited financials to public investors.

Anthropic picks Nasdaq for October IPO at a reported $2trn valuation

What stands behind the Nasdaq decision

The listing has been prepared quietly and in detail. Anthropic filed confidentially at a $965bn valuation, appointed Morgan Stanley and Goldman Sachs to lead the offering, and arranged a $15bn credit facility alongside a timetable that lands days before the US midterms. The company has been preparing to pitch investors a $30trn addressable market, and a raise of $100bn would make it the largest flotation ever attempted. Every valuation attached to it so far has come from people briefing reporters rather than from a prospectus, which is the part that changes next.

For Nasdaq, the win completes a set. It took SpaceX earlier this year at a $1.75trn valuation, and with Anthropic it now holds both of the largest listings of a year that has otherwise been thin for technology flotations. The New York Stock Exchange has historically collected the biggest debuts, which makes 2026 a marked break, and both venues are competing less for the fees than for the right to be seen as the natural home of every AI listing that follows. Only Nasdaq-listed companies can enter the Nasdaq 100, and index inclusion pulls passive money in behind a stock without anyone deciding to buy it.

In trading terms, Anthropic gains very little. No convincing evidence shows that companies perform better on one American exchange than the other, and the practical difference comes down to market-maker mechanics: the two run different processes for setting an opening price, and very large offerings can strain them. Nasdaq's systems failed on the first day of Facebook's 2012 IPO, still the cautionary example whenever a listing of this size arrives. The index rule, not the trading technology, is the concrete advantage of the choice.

What this means for companies watching the AI market

For buyers of AI systems, the listing changes the supplier question. A vendor that raises public money must report revenue, margins and customer concentration, so procurement teams will eventually be able to check claims about scale against filed numbers instead of marketing decks. That matters most for mid-sized companies signing multi-year contracts, where the financial stability of the provider is part of the risk. Large enterprises already run vendor reviews that include balance-sheet checks; smaller firms usually rely on reputation, and public reporting gives them the same instrument.

The warning that has dominated the past fortnight came from a former Anthropic researcher who resigned over safety, saying the labs are gambling with our lives, and whose post, according to Business Insider, put the risk of human extinction above 10 percent. The company about to ask public markets for a valuation is the company the warning came from. That does not by itself make the offering weak or the products unsafe, but it sets the questions investors and customers will ask: how safety work is funded and governed once quarterly reporting begins, and whether those commitments survive contact with public shareholders.

Two days ago, Sam Altman told Fortune that OpenAI would not list in 2026, because, given everything happening with safety, right now would be an ill-advised moment to go public. Anthropic is proceeding towards a roadshow in the same month Altman is avoiding, and the two companies have reached opposite conclusions from an almost identical set of facts. The sign to watch is procedural: Anthropic must publish its financials at least 15 days before the roadshow opens, so on an October timetable the first numbers anyone can check are due within weeks. If they appear on schedule, the AI sector has a public benchmark for the first time; if the timetable slips, the caution voiced by Altman gains weight.