Traders on Polymarket see a 95% probability that OpenAI's market cap will fall short of the $1.25 trillion to $1.5 trillion bracket on its IPO day, according to the platform's contract resolution by June 30, 2026. With no other prediction markets—Kalshi or Manifold—offering comparable contracts, Polymarket provides the sole window into investor sentiment on this specific valuation scenario. The $513,000 in volume indicates moderate interest, though the lack of cross-platform data limits the robustness of the consensus.
No specific external trigger has been identified in today's news flow to explain the low probability. The market's expectation may reflect broader caution around AI company valuations amid regulatory scrutiny and competitive pressures, though without recent headlines, the rationale remains speculative. The 5% chance of hitting the $1.25T–$1.5T range suggests traders view OpenAI's IPO as likely to land at a lower valuation, possibly due to market conditions or internal factors not captured in public reports.
The absence of data from Kalshi and Manifold means the Polymarket figure stands alone, making it a single-point estimate rather than a multi-platform consensus. Traders should note that the 5% probability is a snapshot of current sentiment and could shift rapidly as the 2026 resolution date approaches, especially if new information emerges about OpenAI's financials or IPO plans.