OpenAI IPO by...?
Short Answer
1. Market Behavior & Drivers
- Since last update (~44h): For December 31, 2026, our model conviction increased by 2.4pp (model_led), compressing edge.
- Overall edge compressed by 3.4pp as model probability rose 2.4pp in 43.5 hours.
- Three prior outcomes (July 31, 2026; December 31, 2025; June 30, 2026) resolved to "no".
- December 31, 2026 leads market probabilities, despite CFO targeting 2027.
- OpenAI's CFO indicated a 2027 IPO, possibly sooner with continued growth.
Who Wins and Why
| Outcome | Market | Model | Why |
|---|---|---|---|
| June 30, 2026 | 0.0% | 5.5% | Determined: NO |
| December 31, 2026 | 14.0% | 5.5% | OpenAI's continued growth and market readiness may facilitate an IPO by December 31, 2026. |
| December 31, 2025 | 0.0% | 5.5% | Determined: NO |
| August 31, 2026 | 0.1% | 0.1% | A strong investor appetite for AI companies may accelerate OpenAI's IPO timeline by August 31, 2026. |
| July 31, 2026 | 0.0% | 5.5% | Determined: NO |
Current Context
2. Price Chart
Historical Price (Probability)
3. Market Data
Contract Snapshot
This market resolves to "Yes" if OpenAI completes an Initial Public Offering (IPO) by the specific listed date ET, confirmed by official company announcements and credible news sources. It resolves to "No" if the IPO does not occur by that date, or if OpenAI is acquired by another company that is already public. An IPO is defined as the first sale of stock to the public on any recognized stock exchange, with resolution based on a consensus of credible reporting.
Available Contracts
Market options and current pricing
| Outcome bucket | Yes (price) | No (price) | Last trade probability |
|---|---|---|---|
| December 31, 2025 | $0.00 | $1.00 | 100% |
| December 31, 2026 | $0.14 | $0.87 | 14% |
| September 30, 2026 | $0.01 | $0.99 | 1% |
| August 31, 2026 | $0.00 | $1.00 | 0% |
| July 31, 2026 | $0.00 | $1.00 | 0% |
| June 30, 2026 | $0.00 | $1.00 | 0% |
| March 31, 2027 | $0.92 | $0.81 | — |
| June 30, 2027 | $0.86 | $0.85 | — |
Market Discussion
Traders largely anticipate that an OpenAI IPO is unlikely in 2026, with market probabilities for a listing by year-end standing at only 14%, and expectations strongly shifting towards 2027. Arguments for an eventual IPO include CEO Sam Altman's push for capital and strong revenue growth, while skepticism for a 2026 debut stems from the CFO's emphasis on internal readiness, significant losses, compliance demands, and advisor recommendations to delay due to market volatility. The highest probability (55%) is currently assigned to an IPO by March 31, 2027, reflecting this consensus.
4. Trader Dashboard
A deterministic, per-market integrity scorecard computed from order-book and price data. Higher is better for Trader Trust, Liquidity, Move Quality and Resolution; higher means more risk for Quote Risk and Avoid Risk.
September 30, 2026Trader Trust—Liquidity—Move Quality—Resolution—Quote Risk—Avoid Risk—
- Factor
- move_log_odds
- -0.13
December 31, 2026Trader Trust—Liquidity—Move Quality—Resolution—Quote Risk—Avoid Risk—
- Factor
- move_log_odds
- -0.12
trader_dashboard_lean_v1.14 · computed Sep 5, 2026
5. What stock market conditions in late 2026 or early 2027 could accelerate or delay OpenAI's IPO?
| IPO Target Year | 2027 (CFO Sarah Friar) [^][^][^] |
|---|---|
| CEO Valuation Target | $1 trillion (Sam Altman) [^][^][^][^][^] |
| Prediction Market IPO | March and June 2027 (most likely) [^][^] |
6. What do OpenAI's financials and leadership statements signal about their IPO readiness before 2027?
| IPO Target Timeline | 2027 or sooner [^][^][^] |
|---|---|
| Confidential IPO Filing | June 2026 [^][^][^] |
| Annualized Revenue Run Rate | $40 billion (as of August 2026) [^][^][^] |
7. How do the IPO timelines and pre-IPO valuations of OpenAI and its rival Anthropic compare heading into 2027?
| OpenAI Expected IPO | 2027 or sooner [^][^][^][^] |
|---|---|
| Anthropic Expected IPO | late 2026 [^][^][^] |
| Anthropic Private Valuation | $965 billion [^][^][^] |
8. Where can traders find reliable data on OpenAI's secondary market share price and volume ahead of its IPO?
| Secondary Market Data Platforms | Forge Global, Nasdaq Private Market, Caplight, Augment, Limen Markets, FNEX [^][^][^][^][^][^] |
|---|---|
| Data Available on Private Platforms | Indicative pricing and bid/ask activity [^][^][^][^][^][^] |
| OpenAI IPO Prediction (August 2026) | Skepticism for 2026 IPO, favoring 2027 debut [^][^][^] |
9. How might the SEC's review of OpenAI's S-1 filing impact a 2026 vs. 2027 IPO date?
| S-1 Filing Date | June 2026 [^][^][^] |
|---|---|
| Stated IPO Target | 2027 (could be sooner) [^][^][^] |
| 2026 IPO Probability | ~17% (as of late August 2026) [^] |
10. What Could Change the Odds
Key Catalysts
Key Dates & Catalysts
- Closes: June 30, 2027
11. Decision-Flipping Events
- Trigger: OpenAI's initial public offering timeline remains a key catalyst.
- Trigger: OpenAI CFO Sarah Friar stated in an August 2026 all-hands meeting that the company will be public in 2027, or sooner with continued business growth [^] [^] [^] .
- Trigger: The company has filed confidential IPO paperwork with the SEC, reported in June 2026, and reportedly submitted a confidential S-1 filing as of August 31, 2026 [^] [^] [^] [^] [^] [^] [^] [^] .
- Trigger: Prediction markets as of late August 2026 indicate an approximate 17% probability of a 2026 IPO announcement, with higher consensus at approximately 74% for before June 2027 [^] .
13. Historical Resolutions
No historical resolution data available for this series.