nimb
Finance · Stocks & IPOs

OpenAI IPO Closing Market Cap

As of 8 November 2026, the favourite on Polymarket is 1.5T+ at 34%, followed by No IPO by December 31, 2027 at 28% and 1.25T–1.5T at 14%.

1.5T+ moved the most this week: 39% to 34% (−4.5 pts).

Open on the mapRules and result on Polymarket

Chances now

New to this? How to read a market · What the odds mean

OutcomeChance24 hours7 daysTraded, 7 days
1.5T+34%+2.6 pts−4.5 pts$6k
No IPO by December 31, 202728%+0.3 pts+3.7 pts$7k
1.25T–1.5T14%+0.5 pts+0.5 pts$566
1T–1.25T12%+0.3 pts−0.1 pts$580
750B–1T4%−0.1 pts+0.3 pts$3k

A price of 34% means traders pay about $0.34 for a “1.5T+” share, which pays $1 if that line resolves Yes. It is the crowd’s estimate, not a forecast by Nimb.

Key facts

Volume and liquidity, explained · How markets resolve · Fees

Largest public holders

WalletHoldsValueUnrealised P&L
elPolloLoco750B–1T · No$24k+$251
0xa5ef…2966750B–1T · No$21k–
0xa5ef…29661T–1.25T · No$19k–
0xa5ef…29661.25T–1.5T · No$18k–
0xa5ef…2966No IPO by December 31, 2027 · No$15k–
0xa5ef…29661.5T+ · No$14k–
chivoexpiatorioNo IPO by December 31, 2027 · Yes$4k+$2k
0xff7c…b233No IPO by December 31, 2027 · No$3k−$230

Value is shares × the current price of the side held. Wallets holding both sides of the same market are left out: their positions cancel and are not a bet. A dash means the cost basis is unknown. Holders are public data; this is not a signal to copy. How to read holders.

Related markets

More in Finance · All markets

Prediction markets are risky and you can lose your whole stake. Risk disclosure.