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Will Microsoft be the largest company in the world by market cap on June 30?
24h Vol
$538.5K
Liquidity
$259.5K
Spread
0%
6/30/2026
View marketFinance
Polymarket market
Track live probability, outcome prices, volume, liquidity, and resolution details for Will SpaceX have the highest IPO Market Cap 2026?. The market currently shows a live probability of 84%, $1.3K in 24h volume, and $9.5K in liquidity.
Probability
84%
24h Volume
$1.3K
Liquidity
$9.5K
This market is asking a very specific question about SpaceX’s place in the 2026 IPO market: if SpaceX goes public during 2026, will it finish its first trading day with the largest market value of any company that lists that year? It is worth watching because SpaceX is one of the most closely followed private companies, and any public debut would likely be compared immediately with other major 2026 IPOs.
The event is tied to SpaceX and to any company that completes an initial public offering between January 1 and December 31, 2026. Resolution is based on the company with the highest market capitalization in U.S. dollars, calculated from the official closing price on the first trading day multiplied by outstanding shares; if there is a tie, the alphabetically earlier listed name wins. If SpaceX does not IPO in 2026, or is not the highest by that measure, the market resolves accordingly under the stated rules.
SpaceX matters here because it is widely regarded as a potential blockbuster listing candidate, and a public debut would create a direct comparison with every other 2026 IPO on valuation alone. The uncertainty is not just whether SpaceX lists, but whether its debut valuation would exceed other offerings once the market assigns a first-day closing price. That makes this a market about both timing and relative scale, rather than simply whether the company goes public.
News that SpaceX is preparing an IPO, filing registration documents, setting a target valuation, or choosing a listing date would all affect this market because they change the odds that it appears in the 2026 IPO set at all. Updates about other huge potential listings can also matter, since a different company could overtake SpaceX on first-day market cap even if SpaceX does go public. Because the resolution depends on the first trading day's closing price and share count, unusually strong or weak debut pricing would be especially important.
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24h Vol
$538.5K
Liquidity
$259.5K
Spread
0%
6/30/2026
View marketThe current market price implies roughly a 84% chance for the leading outcome, based on live Polymarket pricing. That number is not a prediction from PredictionNinja and it is not a guarantee; it is the current crowd-priced view of the market and can change quickly when new information appears.
Readers should watch whether SpaceX actually files and lists before the 2026 deadline, since the market only resolves from IPOs completed by December 31, 2026, 11:59 PM ET. The source of truth is the primary exchange’s official listing page, with U.S. dollar conversion rules spelled out if needed, so the exact listing price and share count are what matter most. Any ambiguity would come from delayed official figures, non-dollar reporting, or a tie at the top, so the final name depends on the stated formula rather than headlines or private valuation talk.
Track live probability, outcome prices, volume, liquidity, and resolution details for Will SpaceX have the highest IPO Market Cap 2026?. The market currently shows a live probability of 84%, $1.3K in 24h volume, and $9.5K in liquidity.
Track live finance prediction markets focused on interest rates, inflation, stock market events, central bank decisions, and global financial forecasting trends.
Yes
83.5%
No
16.5%
This market is currently listed with an end date of Dec 31, 2026. Market timelines can change if the underlying event is postponed, rescheduled, or resolved early.
This market will resolve to the company that achieves the highest market capitalization in U.S. dollars based on the official closing price on its first trading day in 2026. This market will resolve to a company that completes an Initial Public Offering (IPO) between January 1 and December 31, 2026, 11:59 PM ET. Market capitalization is defined as the total number of outstanding shares multiplied by the closing share price on the first trading day. If two or more companies have exactly equal highest closing market capitalizations, this market will resolve to the company whose listed name comes first alphabetically. Resolution will be based on the primary exchange’s official listing page. In the event that the relevant figure is not displayed, another reliable source will be used. In case the respective company's primary exchange’s official listing page does not report in U.S. dollars, it will be converted to U.S. dollars using the U.S. Federal Reserve Board’s H.10 foreign exchange reference rate for the relevant currency pair on the company’s first trading day (https://www.federalreserve.gov/releases/h10/). If no such rate is available for the relevant trading day, the most recent previously published rate will be used. If the relevant currency is not listed, another credible exchange rate source will be used. A listed company may resolve to "No" as soon as it becomes unable to complete an IPO, including due to acquisition, merger, or absorption by an entity that is already publicly traded. In the event of an interruption in the course of the normal trading session on the respective companies’ first day of trading (e.g., a circuit breaker or half-day), the market will resolve according to the official closing price of the abbreviated session. If no such official closing price is published, the market will resolve according to the next trading day on which an official closing price is published, treating that as the first day of trading for purposes of this market.
Probability signal
The current price implies a strong favorite, so new information would need to be meaningful to move the market sharply.
Liquidity context
Liquidity is present but not especially deep, so spreads and order-book movement still matter.
Spread
The bid-ask spread is tight, which usually points to a more actively priced market.
Recent movement
The 24h move is modest, suggesting the market has not repriced dramatically in the latest feed.
The current displayed probability is 84%, based on the latest normalized Polymarket data available to PredictionNinja.
The rules and resolution criteria are pulled from the market description provided by Polymarket when available.
Prediction markets can move whenever traders react to new information, liquidity changes, injuries, announcements, news, or other event-specific developments.
No. PredictionNinja displays market data and context for research only. It is not financial, legal, betting, or investment advice.

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