OpenAI IPO by...?

According to the latest prediction market data for the query “OpenAI IPO by...?”, traders have formed a strong consensus.

Currently, December 31, 2026 is dominating the market with an overwhelming 73% chance of winning. September 30, 2026 follows in second place at 20.5%, while August 31, 2026 sits in third with 4%. The betting volume for this specific market has already reached $2.9M, reflecting intense industry interest.

To better assess where each potential outcome stands, the market can be segmented into three distinct trading tiers based on implied probability and contract pricing:

🥇 Tier 1: The Dominant Leader

• December 31, 2026 (73%): Currently commanding the highest probability, December 31, 2026 is heavily favored by the order book. Traders looking to back this outcome face a “Buy Yes” contract price of 73¢, signaling a high degree of market conviction. This contract alone has generated $952.7K in volume.

🥈 Tier 2: The Primary Challengers

• September 30, 2026 (20.5%): Positioned as the most viable alternative, September 30, 2026 maintains a 20.5% chance of resolving true. Its “Buy Yes” shares currently trade at 21¢.
• August 31, 2026 (4%): Sitting in third place with a 4% probability, the market shows measured skepticism toward August 31, 2026, treating it as an outside wildcard unless momentum shifts.

🥉 Tier 3: The Long-Tail Options (Combining for ~2.5%)

Beyond the top three choices, a wide field of macro variables and long-shot outcomes are being tracked. While their individual probabilities hover low, they represent crucial hedges for speculative traders:

• Alternative Options: This includes July 31, 2026 (1.8%), and June 30, 2026 (0.5%).
• Speculative Volume: Despite low statistical likelihood, certain long-tail contracts like July 31, 2026 are still attracting notable interest.

This market will resolve to "Yes" if OpenAI completes an Initial Public Offering (IPO) by the listed date ET, as confirmed by official company announcements and credible news sources. Otherwise, this market will resolve to "No".

The IPO refers to the first sale of stock by the listed company to the public on any recognized stock exchange.

If OpenAI is acquired by another company that is already public, this market will immediately resolve to "No."

The resolution source for this market is a consensus of credible reporting.

While human consensus and speculative volume shape the broader prediction market, our quantitative algorithms offer a data-driven counter-perspective. By analyzing fundamental signals, underlying trends and historical distributions, our AI Valuation model calculates an independent “Fair Value” probability for each outcome.

Comparing this Fair Value against the current Trade Value uncovers major disparities — known as the Expected Value (EV) Gap. Contracts with a positive EV Gap represent statistically underpriced outcomes, whereas a negative EV Gap flags a potential market overreaction.

Top AI Alpha & Mispriced Arbitrage Opportunities

Based on the latest data model run, several key contracts stand out with significant deviations:

• The Most Overvalued Outcome December 31, 2026 currently trades at 73%, but our AI places its Fair Value at just 64.3%. This creates a large negative EV Gap of -8.7%, suggesting the crowd may be overhyping this outcome and driving the premium too high.
• The Best Value Play (Highest EV) Our model identifies July 31, 2026 as the premium value opportunity on the board. While the market only assigns it a 1.8% trading probability, our AI’s Fair Value assessment sits at 44.6% — yielding an impressive +42.8% EV Gap.
• Under-the-Radar Dark Horses Other notable discrepancies include August 31, 2026 (EV Gap: +12%) and June 30, 2026 (EV Gap: +0.5%). These long-tail opportunities are heavily discounted by the live order books despite stronger statistical backing from our predictive model.