Largest IPO by market cap in 2026?

Largest IPO by market cap in 2026?

90%

SpaceX

$2M Vol.

$280K Liq.

9

Ends in 9 months

GPT-5.5 released by...?

GPT-5.5 released by...?

93%

June 30

$301K Vol.

$19.7K Liq.

4

OpenAI IPO closing market cap above ___ ?

OpenAI IPO closing market cap above ___ ?

75%

$800B

$1M Vol.

$18.9K Liq.

2

Ends in over 1 year

GPT-6 released by…?

GPT-6 released by…?

83%

December 31, 2026

$216K Vol.

$22.6K Liq.

40

OpenAI $1t+ IPO before 2027?

OpenAI $1t+ IPO before 2027?

24%

$243K Vol.

$8.9K Liq.

11

Ends in 9 months

Will SpaceX or OpenAI IPO first?

Will SpaceX or OpenAI IPO first?

96%

SpaceX

$56.7K Vol.

$7.4K Liq.

1

Ends in over 1 year

What kind of product will OpenAI announce in 2026?

What kind of product will OpenAI announce in 2026?

37%

Necklace

$114K Vol.

$5.3K Liq.

12

Ends in 9 months

Will OpenAI launch a consumer hardware product by...?

Will OpenAI launch a consumer hardware product by...?

31%

December 31, 2026

$252K Vol.

$2.0K Liq.

31

Will Anthropic or OpenAI IPO first?

Will Anthropic or OpenAI IPO first?

57%

Anthropic

$51.0K Vol.

$5.3K Liq.

Ends in over 1 year

SpaceX or OpenAI higher IPO Market Cap?

SpaceX or OpenAI higher IPO Market Cap?

74%

SpaceX

$7.2K Vol.

$3.2K Liq.

5

Ends in over 1 year

Over 30M humans verified on World Network by December 31?

Over 30M humans verified on World Network by December 31?

17%

$0 Vol.

$3.0K Liq.

Ends in 9 months

Will Elon Musk win his case against Sam Altman?

Will Elon Musk win his case against Sam Altman?

37%

$92.6K Vol.

$15.5K Liq.

15

Ends in 9 months

Sam Altman in jail by...?

Sam Altman in jail by...?

3%

June 30, 2026

$41.5K Vol.

$5.9K Liq.

6

Will Sam Altman get OpenAI equity by June 30?

Will Sam Altman get OpenAI equity by June 30?

25%

$0 Vol.

$4.2K Liq.

Ends in 3 months

OpenAI receives federal backstop for infrastructure before July?

OpenAI receives federal backstop for infrastructure before July?

6%

$102K Vol.

$9.3K Liq.

2

Ends in 3 months

OpenAI acquired before 2027?

OpenAI acquired before 2027?

12%

$0 Vol.

$1.7K Liq.

Ends in 9 months

Which CEOs will be out before 2027?

Which CEOs will be out before 2027?

34%

Dan Clancy - Twitch

$545K Vol.

$49.1K Liq.

22

Ends in 9 months

What will be said on the next All-In Podcast? (April 3)

What will be said on the next All-In Podcast? (April 3)

91%

Trump

$387 Vol.

$2.5K Liq.

Ends in about 13 hours

OpenAI announces it has achieved AGI before 2027?

OpenAI announces it has achieved AGI before 2027?

19%

$44.8K Vol.

$5.9K Liq.

10

Ends in 9 months

Barletta: Lukas Neumayer vs Toby Samuel

Barletta: Lukas Neumayer vs Toby Samuel

55%

Toby Samuel

$599 Vol.

$7.6K Liq.

Ends in 5 days

Frequently Asked Questions

Polymarket is the world’s largest prediction market, where you can stay informed and profit from your knowledge by trading on things related to breaking news, politics, sports, elections, crypto, finance, tech, culture, including topics like Sam Altman.

Polymarket currently hosts 120 active markets for Sam Altman that lets you track or trade on predictions like “Largest IPO by market cap in 2026?”. Whether you are tracking widely debated events or niche outcomes, the platform aggregates real-time odds based on over $5.2M in trading volume, providing a comprehensive view of fan and investor sentiment.

Each polymarket is a yes/no question, like “OpenAI receives federal backstop for infrastructure before July?”. You buy shares in “yes” or “no” outcomes. Prices reflect crowd-sourced odds and probabilities. For example, if yes is at 30 cents, that’s a 30% chance. Markets resolve based on official results. For multi-outcome events, like “Largest IPO by market cap in 2026?,” you simply trade on the specific outcome you think will win.

As of today, the most active market is “Largest IPO by market cap in 2026?,” where the crowd is currently assigning a 90% chance to SpaceX. These odds update in real-time as new information emerges and users trade, offering a dynamic snapshot of what the market believes will happen compared to traditional bookmaker odds.

It cuts through the noise. Unlike polls or punditry, Polymarket shows you real-time odds on Sam Altman predictions backed by financial conviction that are often faster and more accurate than experts or surveys. You get an unbiased view of what thousands of traders think will actually happen, often more accurate than polls. Plus, you can trade shares and potentially profit if your predictions are spot on.