Will Anthropic's market cap be between $1.25T and $1.5T at market close on IPO day?

Prediction markets put the probability at 9%: Will Anthropic's market cap be between $1.25T and $1.5T at market close on IPO day. Currently, markets see this as unlikely (9% YES). The second big market for this event is on Anthropic’s valuation.

What’s Happening

Traders currently assign a 9% probability that Anthropic's market cap will be between $1.25T and $1.5T at market close on IPO day, with the 91% NO side reflecting a consensus that the AI company will debut above that bracket. This pricing aligns with cumulative distribution data from a related valuation market, where the median expected market cap lands inside the $1.75T to $2.0T range. The $1.25T to $1.5T bracket sits notably below that median, suggesting the market views a sub-$1.5T close as a bearish scenario requiring either a broad tech selloff or a disappointing debut. Anthropic's last private mark was $965 billion, set during a $65 billion Series H-1 in May, meaning the current IPO-day expectations imply a substantial premium over the final private valuation. [Actionnetwork, Mon Aug 10]

The market structure for Anthropic's market cap at IPO close is fragmented across nine brackets, with the $1.5T to $1.75T and $2.25T to $2.5T ranges each trading at 17% probability, while the $3T or more bracket sits at just 3%. This distribution creates a heavy right tail, pushing the probability mass away from the $1.25T to $1.5T window. The concentration of bids in higher brackets reflects the market's assessment of Anthropic's competitive position, particularly its status as the most likely owner of the top Chatbot Arena model at the June cutoff, a factor that has historically correlated with stronger public market valuations. The 91% NO probability on the $1.25T to $1.5T bracket also implies that traders expect the IPO pricing mechanism to capture a valuation closer to the $1.75T median, which would require a share price roughly 80% above the last private round. [Cryptoslate, Mon Jun 15]

The next catalyst for this market is the formal IPO date confirmation, with Polymarket odds previously indicating a clear timeframe for the listing. A separate market tracking the Grok 4.6 release date highlighted a potential boundary issue with timestamps, noting a market close of August 14 at 11:59 p.m. UTC versus resolution criteria referencing Eastern Time; similar ambiguity could affect the Anthropic IPO settlement if the close time is not explicitly defined. The August 7 price for the AI model race served as a key counter-signal, with an 82.9% implied chance of a specific public release outcome, underscoring how tightly coupled model performance expectations are to valuation. Should Anthropic's market cap close within the $1.25T to $1.5T range, it would mark a significant deviation from the current median projection, potentially triggering a repricing of the entire AI sector's public market comparables. The board's decision on the final IPO share price, expected after the next private round closes, will be the primary determinant of whether the 9% YES probability moves materially. [Cryptoslate, Thu Aug 06]

Traded on Polymarket — $51K Volume

Lower-volume market on Polymarket ($51K). Wider spreads expected — enter with limit orders and be aware of slippage risk. Currently 9c YES.