OpenAI’s market cap odds drop from 80% to just above 50% amid IPO delay

Traders on Polymarket once gave OpenAI an 80% chance of reaching a market cap above $1.5 trillion. Those odds have since dropped to 58%, which is barely better than a coin flip.

The slide follows OpenAI’s decision to push its IPO timeline from a possible late-2026 debut into 2027. Weaker sentiment around AI profitability has added to the drag.

What changed for OpenAI

OpenAI announced the shift in its IPO timeline in September 2026. CEO Sam Altman pointed to safety as a key reason for delaying the decision. He framed the delay around keeping AI alignment ahead of rapid advances in the technology.

Market conditions appear to have played a role too. Concerns about volatility followed SpaceX’s IPO in June 2026, and that backdrop has not made anyone eager to rush a mega-listing.

Then there is the price tag. Altman has described any valuation under $1 trillion as a nonstarter for the IPO. He has said the company will not go public until a proper valuation is assured.

A drop from 80% to 58% does not mean traders think OpenAI is in trouble. It means they are much less sure the eventual listing will clear the $1.5 trillion bar.

The numbers behind the bet

OpenAI’s private valuation has climbed fast. In March 2026, the company raised $122 billion in a round that valued it at $852 billion post-money.

It is now in early discussions for another private round. That raise would target at least $30 billion at a pre-money valuation of approximately $1.4 trillion.

Revenue has given the bulls something to point to. OpenAI’s annualized revenue run-rate reportedly reached around $40 billion by August 2026. That figure reportedly marked a 70% increase since July.

OpenAI is still posting substantial losses, and its heavy compute spending commitments continue to weigh on its financial picture.

Background: a crowded road to public markets

OpenAI is not the only AI lab eyeing public investors. Rival Anthropic has also filed for an IPO and is reportedly on a faster track.

OpenAI recently launched AI products known as “Dots” as it explores new funding opportunities.

What this means for investors and the AI trade

The next private round is the clearest signal to watch. If OpenAI closes at least $30 billion at around $1.4 trillion pre-money, that would suggest private capital still sees room to run.

Altman’s valuation stance also raises the stakes for the eventual debut. A company that refuses to list below $1 trillion is setting expectations high before it rings the bell.

The prediction market itself is worth watching as a sentiment gauge. Polymarket odds moved sharply on a mix of delay news and profitability worries.