Resolution criteria on PolyGram: This market will resolve to “SpaceX” if the official closing price for SpaceX’s market capitalization on its first trading day is above the official closing price for OpenAI’s market capitalization on its first trading day. This market will resolve to “OpenAI” if the official closing price for OpenAI’s market capitalization on its first trading day is above the official closing price for SpaceX’s market capitalization on its first trading day. This market will resolve to the company that completes an Initial Public Offering (IPO) by December 31, 2027, 11:59 PM ET, if the other company does not complete an IPO within the market timeframe.
PolyGram is an on-chain prediction market where you trade YES or NO outcome shares with real USDC on Polygon. For this market, buy YES if you believe the event will happen, or NO if you think it won't. Your maximum loss is your stake — winning shares pay $1.00 each at resolution. Unlike sportsbooks, there is no house edge: prices are set by supply and demand from other traders and reflect the crowd's real-time probability.
Market outcomes
| SpaceX or OpenAI higher IPO Market Cap? | 93% YES | 7% NO |
SpaceX and OpenAI, both privately held companies valued in the tens of billions, may pursue public listings before the end of 2027. This market compares their opening-day market capitalisations should both complete IPOs within the settlement window. The 93% crowd probability currently favours SpaceX, reflecting market expectations about which company is more likely to list first or at a higher valuation. Polymarket's order book shows this skew, with traders pricing in SpaceX's established revenue streams and government contracts as a more concrete foundation for public market valuation than OpenAI's rapidly evolving business model.
Historical IPO comparables suggest opening valuations often diverge sharply from pre-IPO private valuations. Nvidia's 1999 IPO valued the company at roughly $2.3bn; it has since grown substantially. More recently, Arm's 2023 IPO opened at $51bn, whilst Stripe remains private despite a $95bn valuation in secondary markets. SpaceX's government contracts with NASA and the Department of Defence, plus demonstrated Starship development, provide clearer revenue visibility than OpenAI's licensing agreements and API revenue, which remain opaque to public markets.
Traders should monitor SpaceX's regulatory filings with the SEC and any public statements from Elon Musk regarding listing timelines, alongside OpenAI's governance structure and potential investor announcements. Recent reporting suggests SpaceX has discussed IPO possibilities with advisers, though no formal S-1 filing has emerged. OpenAI's transition to a capped-profit structure and ongoing board changes may signal preparation for eventual public markets, but timelines remain uncertain. The settlement window extends through 2027, allowing considerable time for either company's circumstances to shift market expectations.
Resolution is handled by the UMA optimistic oracle on Polygon. A proposer submits the outcome, a two-hour dispute window opens, and if no one stakes a counter-claim the payout is final. Contested outcomes escalate to UMA token-holder voting. Payouts clear in USDC to the winning side.
The mechanics for trading "SpaceX or OpenAI higher IPO Market Cap?" are the same as any other PolyGram event contract. Each YES share resolves to $1 if the event happens, or $0 if it doesn't. The current price between 0¢ and 100¢ is the market's probability estimate, set live by the order book.
$8K in lifetime turnover and $949 of resting liquidity puts this market in the below the median by volume for science contracts on PolyGram. Order-book depth is thin — large orders may need to be split across the book or executed as limit orders.
The market has been open for 3 months — the price has had time to stabilise as new information arrived.
Higher-volume markets tend to have tighter spreads and faster price discovery — meaning the displayed YES/NO percentages are more likely to reflect the true crowd-implied probability rather than a single trader's directional view.
As of today, traders on Polymarket price this outcome at 93%. The number updates continuously as the order book clears. PolyGram mirrors the same live odds with locale-aware formatting and USDC settlement.
Resolution is handled by the UMA optimistic oracle on Polygon. A proposer submits the outcome, a 2-hour dispute window opens, and if uncontested the payout is final. Contested outcomes escalate to UMA token holders.
This prediction market is scheduled to close on 31 December 2027. After the resolving event occurs, settlement typically clears within 24 hours once the UMA optimistic oracle confirms the outcome. All payouts are in USDC on the Polygon network.
To trade on this prediction market, create a free PolyGram account at polygram.ink, deposit USDC via Polygon, and place a YES or NO order on the outcome you believe in. You can learn more on our how-it-works page. Your maximum loss is limited to your stake — there is no leverage or margin.
When the outcome is determined, winning YES shares pay out $1.00 each in USDC, while losing shares pay $0. Settlement is handled by the UMA optimistic oracle on Polygon — a proposer submits the result, a two-hour dispute window opens, and if uncontested, payouts are distributed automatically. You can withdraw your winnings to any Polygon wallet.
Prediction-market positions can lose 100% of staked capital. Outcomes are uncertain by definition — historical accuracy of crowd-implied probabilities is high in aggregate but not for any single market. PolyGram does not provide investment advice. Trade only with capital you can afford to lose.
Regulatory status varies by jurisdiction. Germany, the United States, and most EU countries treat Polymarket-style event contracts under one of three frameworks: financial derivative, gambling product, or unregulated novel asset. Consult local counsel before trading.
Explore more prediction market odds and trading opportunities on PolyGram: