Prediction markets put the probability at 17%: OpenAI IPO before 2027. Currently, markets see this as unlikely (17% YES). Polymarket launches private company trading so investors can speculate on Anthropic, OpenAI.
The path to an OpenAI IPO has stretched further into the future after the company signaled it may delay its public debut until 2027. On June 25, 2026, the New York Times reported, citing three people involved in deliberations, that OpenAI is considering holding off on its listing, prompting Kalshi traders to recalibrate their timelines toward an announcement by March 1, 2027. Chief Financial Officer Sarah Friar has told associates the company is aiming for a 2027 listing, according to Reuters, which also reported OpenAI is targeting a valuation of up to $1 trillion. The recalibration explains the market's low reading, with only a 17% chance the offering completes before the calendar turns to 2027. [Reuters, Jun 25]
The delay marks a reversal from the accelerated timeline reported in May. On May 20, 2026, Axios reported OpenAI was preparing a confidential IPO prospectus that could be filed shortly, working with Goldman Sachs and Morgan Stanley, with some outlets citing a targeted September public debut. That filing arrived days after Elon Musk lost his lawsuit against the company, positioning an OpenAI IPO against rival public-market entries from SpaceX and Anthropic, which share many of the same underwriting banks. A trillion-dollar debut would rank among the largest technology listings on record, exceeding the market capitalizations most large-cap software issuers command at flotation. [Axios, May 20]
The timing uncertainty has itself become a tradable event: on May 19, 2026, Polymarket launched contracts tied to private-company milestones including valuations, IPO timing and secondary-market activity for names such as OpenAI and Anthropic. With a confidential filing already lodged but the launch window fluid, the next catalysts are a public S-1 disclosure and any formal roadshow date — neither of which has been confirmed. Until then, an OpenAI IPO before 2027 remains contingent on the company reversing its reported preference to wait, a step management has not signaled. [CNBC, May 19]
Polymarket prices this at 17c YES with $467K in volume. Moderate liquidity — use limit orders for positions above $1K to avoid moving the price.
What does smart money think? Get AI verdicts, wallet positioning, signal analysis, and entry targets.
Unlock PRO — $29/mo7/7 models agree on NO, fair value 26c vs market 17c. 1 tier-1 wallet aligned with models — BUY NO at 17c.
| Model | Says | Fair Value estimated fair price | Confidence |
|---|---|---|---|
| MATH Bayesian Update | NO | 90c | — |
| MATH PIN Model | NO | 92c | — |
| MATH Compound Signal | NO | 69c | — |
| AI DeepSeek Quant | NO | 88c | 78% |
| AI Grok Contrarian | NO | 72c | 62% |
| AI Gemini Flash | NO | 88c | 85% |
| AI Kimi Macro | NO | 17c | 65% |
7 of 7 models estimate NO fair value below market (17–92c vs 83c). Gemini Flash leads with 85% confidence.
Models estimate fair value of NO at 74c — market prices it at 83c. 9-point gap supports YES.
We tracked 1 wallet with positions above $1K on this market. NO wallets entered between 76c.
| Wallet | Category | Side | Amount | P&L | |
|---|---|---|---|---|---|
| 0x5cd5..33 ★ | Retail | NO | $2.7K | +8% |
NO wallets entered at 76c. At current price 17c, all YES buyers are underwater while all NO holders are profitable. Profitable positions rarely sell early — NO side has structural price support.
Polymarket prices YES at 17c with $467K in total volume. Our model estimates fair value at 26c. Significant 9-point gap — model sees YES as substantially mispriced.
| Platform | YES Price | Volume |
|---|---|---|
| Polymarket | 17c | $467K |
| Our Model | 26c | — |