LIVE Hyperliquid whale tracker: the largest open positions and what they are doing, updated every few minutes →
Home / Markets / Largest IPO by market cap in 2026?
Live market data

Largest IPO by market cap in 2026?: live odds and probabilities

The market favorite is SpaceX at 83.5%, ahead of xAI at 25.5%. $7.6M traded across 13 outcomes.

Updated 2026-11-06 03:03 UTC · Source: Polymarket · 18+ · Market prices, not predictions or advice

Favorite

83.5%
SpaceX · Trade →

24h move

+12.0
pts · 7d +35.0

Volume

$7.6M
24h $70K · liquidity $939K

Closes

January 2, 2027
57 days left

Climate & ScienceIPOScienceElon MuskOpenAI

All outcomes

OutcomeProbability24h7dVolumeSpread
SpaceX83.5% +12.0+35.0$1.3M1.0¢
xAI25.5% 0.00.0$049.0¢
Anthropic15.6% -12.2-33.7$1.5M1.9¢
OpenAI0.1% 0.0-0.1$749K0.1¢
ByteDance0.1% 0.00.0$238K0.1¢
Stripe0.1% 0.00.0$188K0.1¢
Databricks0.1% 0.00.0$678K0.1¢
SHEIN0.1% 0.00.0$661K0.1¢
Waymo0.1% 0.00.0$396K0.1¢
Revolut0.1% 0.00.0$718K0.1¢
Discord0.1% 0.00.0$243K0.1¢
Perplexity AI0.1% 0.00.0$180K0.1¢
Kraken0.1% 0.00.0$674K0.1¢

Prices are the Polymarket mid or last trade at 2026-11-06 03:03 UTC. A price of 64¢ implies roughly a 64% chance. Prices include spread and are not forecasts by BetG8.

📱 Compare how the same event is priced across venues on Polymtrade.Referral link. 18+.

Price history

0%25%50%75%100%02-0306-2111-06
SpaceXAnthropicOpenAI

Market rules and resolution

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.

How to read this market

Each share pays $1 if its outcome happens. Buying SpaceX at 84% risks 84¢ to win 17¢. Prices move with news and order flow, and thin markets can swing on small trades, so check volume and spread before treating a number as the crowd's view. See our guides to implied probability and how markets resolve.

Frequently asked questions

Who is favored in "Largest IPO by market cap in 2026?"?
As of November 6, 2026, SpaceX is the favorite at 83.5%, followed by xAI at 25.5%.
When does this market resolve?
The market is scheduled to close on January 2, 2027. It resolves under Polymarket's rules once the outcome is known, which can be earlier or later than the listed date.
How much has been traded?
$7.6M in total and $70K in the last 24 hours, with about $939K of resting liquidity.
Can I trade this market?
Polymarket restricts access by location; the US version (Polymarket US) and the offshore site have different rules and fee schedules. Check availability in your jurisdiction. BetG8 earns a referral fee from the Polymtrade links on this page.

Related on BetG8

Data: Polymarket Gamma and CLOB APIs, fetched by BetG8 at the time shown above. Venues may restrict access by location. 18+ only.