This market will resolve to "Yes" if OpenAI completes an Initial Public Offering (IPO) by the listed date ET, as confirmed by official company announcements and credible news sources. Otherwise, this market will resolve to "No".

The IPO refers to the first sale of stock by the listed company to the public on any recognized stock exchange.

If OpenAI is acquired by another company that is already public, this market will immediately resolve to "No."

The resolution source for this market is a consensus of credible reporting.

December 31, 2026

September 30, 2026

August 31, 2026

OpenAI IPO by...?

This market will resolve based on SpaceX's market capitalization at the closing price on the last trading day of the calendar month in which SpaceX completes its Initial Public Offering (IPO).

The IPO refers to the first sale of stock by SpaceX to the public on any recognized stock exchange. If no SpaceX IPO occurs by December 31, 2027, 11:59 PM ET, the market will resolve to "No IPO before 2028".

Market capitalization expresses the monetary value of a company’s outstanding shares, stated in its pricing currency. It is calculated as the number of shares outstanding multiplied by the closing share price on the last trading day of the calendar month in which SpaceX completes its IPO.

If the relevant value falls exactly between two brackets, then this market will resolve to the higher range bracket.

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 the event of an interruption in the course of the normal trading session on SpaceX’s last trading day of the calendar month in which SpaceX completes its IPO (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 last trading day of the calendar month in which SpaceX completes its IPO.

$2.0T-$2.5T

$1.5T-$2.0T

$2.5T-$3.0T

SpaceX Closing Market Cap End of IPO Month

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.

SpaceX

Anthropic

OpenAI

Largest IPO by market cap in 2026?

This market will resolve to "Yes" if Anthropic shares are listed on a public securities exchange and open for trading by 11:59 PM ET on the listed date. Otherwise, this market will resolve to "No."

If Anthropic is acquired by another company that is already public, this market will immediately resolve to "No."

The primary resolution source for this market is official filings and announcements from Anthropic and the relevant securities exchange on which the shares are listed, including SEC filings (e.g., Form S-1, Form 8-A), exchange listing confirmations, and official press releases from Anthropic; however a consensus of credible reporting may also be used. 

October 31, 2026

Anthropic IPO by __?

This market will resolve to “Up” if SpaceX's closing share price on the last trading day of the calendar month in which SpaceX completes its Initial Public Offering (IPO) is greater than or equal to the closing share price on its first day of trading. Otherwise, it will resolve to “Down.”

The official closing price as listed by the primary exchange will be considered the closing share price for the purposes of this market. The IPO offer price, or the price of any transaction not on the primary exchange, will not count for resolution of this market.

The IPO refers to the first sale of stock by SpaceX to the public on any recognized stock exchange. If no SpaceX IPO occurs by December 31, 2027, 11:59 PM ET, the market will resolve to 50-50. 

If SpaceX’s first day of trading falls on the last trading day of the calendar month, this market will consider the closing share price of the last trading day of the following calendar month, treating it as though SpaceX completed its IPO the following month for the purposes of this market.

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 the event of an interruption in the course of the normal trading session on either specified day of SpaceX 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 for either specified day, the market will resolve according to the next trading day on which an official closing price is published, treating that as the specified day for purposes of this market.

SpaceX IPO: Closing Price Up/Down End of First Month?

This market will resolve based on Discord's market capitalization at the closing price on its first day of trading.

If no IPO occurs by June 30, 2026, 11:59 PM ET, the market will resolve to "No IPO by June 30, 2026".

Market capitalization expresses the monetary value of a company’s outstanding shares, stated in its pricing currency. It is calculated as the number of shares outstanding multiplied by the closing share price on the first trading day.

If the relevant value falls exactly between two brackets, then this market will resolve to the higher range bracket.

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 the event of an interruption in the course of the normal trading session on Discord’s 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.

No IPO by June 30, 2026

<15B

15–20B

Discord IPO Closing Market Cap

This market will resolve based on Anthropic's market capitalization at the closing price on its first day of trading.

If no IPO occurs by December 31, 2027, 11:59 PM ET, the market will resolve to "No IPO by December 31, 2027".

Market capitalization expresses the monetary value of a company’s outstanding shares, stated in its pricing currency. It is calculated as the number of shares outstanding multiplied by the closing share price on the first trading day.

If the relevant value falls exactly between two brackets, then this market will resolve to the higher range bracket.

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 the event of an interruption in the course of the normal trading session on Anthropic’s 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.

1.8T+

1.2–1.5T

1.5–1.8T

Anthropic IPO

Anthropic IPO Closing Market Cap (Middle Brackets)

600B+

No IPO by December 31, 2027

400–600B

Anthropic IPO Closing Market Cap (Lower Brackets)

This market will resolve to "Yes" if the listed company completes an Initial Public Offering (IPO) by December 31, 2026, 11:59 PM ET, as confirmed by official company announcements or credible news sources. The IPO refers to the first sale of stock by the listed company to the public on any recognized stock exchange.

If the listed company merges with another entity, is acquired, or ceases to exist before the market resolves, the market will also resolve to "No".

This market will resolve early if the listed company completes an IPO by December 31, 2026, 11:59 PM ET.

The resolution source for this market is a consensus of credible reporting.

Discord

Yearly IPOs

IPOs before 2027?

$1.25–$1.5T

<$1.25T

$1.5–$1.75T

Anthropic IPO Closing Market Cap

This market will resolve based on Anthropic's market capitalization at the closing price on its first day of trading.

If no IPO occurs by June 30, 2026, 11:59 PM ET, the market will resolve to "No IPO by June 30, 2026".

Market capitalization expresses the monetary value of a company’s outstanding shares, stated in its pricing currency. It is calculated as the number of shares outstanding multiplied by the closing share price on the first trading day.

If the relevant value falls exactly between two brackets, then this market will resolve to the higher range bracket.

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 the event of an interruption in the course of the normal trading session on Anthropic’s 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.

This market will resolve based on OpenAI's market capitalization at the closing price on its first day of trading.

If no IPO occurs by December 31, 2026, 11:59 PM ET, the market will resolve to "No IPO by December 31, 2026".

Market capitalization expresses the monetary value of a company’s outstanding shares, stated in its pricing currency. It is calculated as the number of shares outstanding multiplied by the closing share price on the first trading day.

If the relevant value falls exactly between two brackets, then this market will resolve to the higher range bracket.

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 the event of an interruption in the course of the normal trading session on OpenAI’s 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.

No IPO by December 31, 2026

1T–1.25T

750B–1T

OpenAI IPO

OpenAI IPO Closing Market Cap

This market will resolve based on Freddie Mac's market capitalization at the closing price on its first day of trading.

If no IPO occurs by June 30, 2026, 11:59 PM ET, the market will resolve to "No IPO by June 30, 2026".

Market capitalization expresses the monetary value of a company’s outstanding shares, stated in its pricing currency. It is calculated as the number of shares outstanding multiplied by the closing share price on the first trading day.

If the relevant value falls exactly between two brackets, then this market will resolve to the higher range bracket.

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 the event of an interruption in the course of the normal trading session on Freddie Mac’s 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.

300B+

150–200B

Freddie Mac IPO Closing Market Cap

This market will resolve based on Stripe's market capitalization at the closing price on its first day of trading.

If no IPO occurs by June 30, 2026, 11:59 PM ET, the market will resolve to "No IPO by June 30, 2026".

Market capitalization expresses the monetary value of a company’s outstanding shares, stated in its pricing currency. It is calculated as the number of shares outstanding multiplied by the closing share price on the first trading day.

If the relevant value falls exactly between two brackets, then this market will resolve to the higher range bracket.

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 the event of an interruption in the course of the normal trading session on Stripe’s 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.

140B+

<80B

Stripe IPO Closing Market Cap

The Nasdaq-100 undergoes annual reconstitution in December.

This market will resolve to "Yes" if Nasdaq, Inc. announces that SpaceX will be added to the Nasdaq-100 index by December 31, 2026, 11:59 PM ET. Otherwise, this market will resolve to "No."

An announcement from Nasdaq will qualify for a "Yes" resolution, regardless of whether the listed company has actually been added to the Nasdaq-100 index by the resolution date.

The primary resolution source will be official announcements from Nasdaq, Inc. (https://ir.nasdaq.com/news-and-events/press-releases).

SpaceX IPO: Officially added to Nasdaq-100 in 2026?

This market will resolve according to the bank that serves as the lead underwriter in the initial public offering of Anthropic.

If no IPO occurs by December 31, 2027, 11:59 PM ET, or Anthropic completes an initial public offering without a designated lead underwriter, this market will resolve to “Other.”

If multiple banks are identified as lead underwriters, this market will resolve according to the primary lead underwriter. If the hierarchy between them is unclear, this market will resolve once it is conclusively evident which bank is the primary lead underwriter, for example, through the order in which the banks are listed in the underwriting section of Anthropic’s final initial public offering prospectus, once released.

The primary resolution source for this market will be official disclosures from Anthropic. A consensus of credible reporting may also be used.

Morgan Stanley

Goldman Sachs

JPMorgan

Lead Bank in Anthropic's IPO?

This market will resolve based on Databricks' market capitalization at the closing price on its first day of trading.

If no IPO occurs by June 30, 2026, 11:59 PM ET, the market will resolve to "No IPO by June 30, 2026".

Market capitalization expresses the monetary value of a company’s outstanding shares, stated in its pricing currency. It is calculated as the number of shares outstanding multiplied by the closing share price on the first trading day.

If the relevant value falls exactly between two brackets, then this market will resolve to the higher range bracket.

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 the event of an interruption in the course of the normal trading session on Databricks’ 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.

100–125B

150–175B

Databricks IPO Closing Market Cap

This market will resolve to "Anthropic" if Anthropic completes an Initial Public Offering (IPO) before OpenAI completes an IPO by December 31, 2027, 11:59 PM ET, as confirmed by official company announcements and credible news sources. 

This market will resolve to "OpenAI" if OpenAI completes an Initial Public Offering (IPO) before Anthropic completes an IPO by December 31, 2027, 11:59 PM ET, as confirmed by official company announcements and credible news sources. 

This market will resolve 50-50 if:
- Neither company completes an Initial Public Offering (IPO) by December 31, 2027, 11:59 PM ET;
- Both companies complete an IPO on the same calendar date (ET); or
- By December 31, 2027, 11:59 PM ET, both companies become unable to complete an IPO, including due to acquisition, merger, or absorption by an entity that is already publicly traded.

The IPO refers to the first sale of stock by the listed company to the public on any recognized stock exchange.

The resolution source for this market is a consensus of credible reporting.

Will Anthropic or OpenAI IPO first?

This market will resolve based on Oura's market capitalization at the closing price on its first day of trading.

If no IPO occurs by December 31, 2026, 11:59 PM ET, the market will resolve to "No IPO before January 2027".

Market capitalization expresses the monetary value of a company’s outstanding shares, stated in its pricing currency. It is calculated as the number of shares outstanding multiplied by the closing share price on the first trading day.

If the relevant value falls exactly between two brackets, then this market will resolve to the higher range bracket.

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 the event of an interruption in the course of the normal trading session on Oura’s 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.

$17.5B–$20B

$20B+

$7.5B–$10B

Oura IPO Closing Market Cap

This market will resolve based on Fannie Mae's market capitalization at the closing price on its first day of trading.

If no IPO occurs by June 30, 2026, 11:59 PM ET, the market will resolve to "No IPO by June 30, 2026".

If the relevant value falls exactly between two brackets, then this market will resolve to the higher range bracket.

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 the event of an interruption in the course of the normal trading session on Fannie Mae’s 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.

This market will resolve based on Fannie Mae's market capitalization at the closing price on its first day of trading.

If no IPO occurs by June 30, 2026, 11:59 PM ET, the market will resolve to "No IPO by June 30, 2026".

Market capitalization expresses the monetary value of a company’s outstanding shares, stated in its pricing currency. It is calculated as the number of shares outstanding multiplied by the closing share price on the first trading day.

If the relevant value falls exactly between two brackets, then this market will resolve to the higher range bracket.

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 the event of an interruption in the course of the normal trading session on Fannie Mae’s 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.

300–350B

<200B

Fannie Mae IPO Closing Market Cap

This market will resolve according to the public ticker symbol used by OpenAI in an IPO (Initial Public Offering) by December 31, 2027, 11:59 PM ET.

An official announcement from OpenAI that it will IPO under a specific ticker symbol will be sufficient to resolve this market.

If a ticker used by OpenAI in a qualifying IPO is a variant of a ticker symbol listed in this market group with additional letters to denote a specific class of shares, it will be considered to be that ticker (e.g. if OpenAI uses a ticker symbol of $OPAI.A or $OPAIA, this market will resolve to $OPAI).

If OpenAI announces an IPO with multiple tickers that are not considered the same ticker under the previous rule (i.e. $OPAI.A and $OPAI.B would be considered the same ticker), this market will remain open until OpenAI's first day of public trading and will resolve according to the ticker symbolizing the security class with the greatest market capitalization. Market capitalization is calculated as the number of shares outstanding multiplied by the closing share price on the first trading day. If this also results in a tie, this market will resolve according to the ticker symbol that comes first in alphabetical order.

If OpenAI IPOs with a non-listed ticker, or does not IPO or officially announce an IPO and ticker symbol by December 31, 2027, 11:59 PM ET, this market will resolve to "Other."

The primary resolution source for this market will be official information from OpenAI and the primary exchange's official listing page. In the event that the relevant figure is not displayed, another reliable source will be used.

Note: In the event of an interruption in the course of the normal trading session on OpenAI's first day of trading (e.g., a circuit breaker or half-day), the market will use the official closing price of the abbreviated session. If no such official closing price is published, the market will use the closing price on the next trading day for which an official closing price is published, treating that as the first day of trading for purposes of this market.

$OAI

$OPAI

$LLM

What will OpenAI's public ticker be?

This market will resolve based on OpenAI's market capitalization at the closing price on its first day of trading.

If no IPO occurs by December 31, 2027, 11:59 PM ET, the market will resolve to "No IPO by December 31, 2027".

Market capitalization expresses the monetary value of a company’s outstanding shares, stated in its pricing currency. It is calculated as the number of shares outstanding multiplied by the closing share price on the first trading day.

If the relevant value falls exactly between two brackets, then this market will resolve to the higher range bracket.

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 the event of an interruption in the course of the normal trading session on OpenAI’s 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.

1.5T+

1.25T–1.5T

The S&P 500 undergoes quarterly reconstitution on the third Friday of March, June, September, and December.

This market will resolve to "Yes" if S&P Global Inc. announces that SpaceX will be added to the S&P 500 index by December 31, 2026, 11:59 PM ET. Otherwise, this market will resolve to "No."

An announcement from S&P will qualify for a "Yes" resolution, regardless of whether the listed company has actually been added to the S&P 500 index by the resolution date.

The primary resolution source will be official announcements from S&P Global Inc. (https://www.spglobal.com/en/press/press-release).

SpaceX IPO: Officially added to S&P 500 in 2026?

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. This market will resolve to the IPOed company as soon as it becomes impossible for the other company to complete an IPO within the market timeframe, including due to acquisition, merger, or absorption by an entity that is already publicly traded.

This market will resolve 50-50 if:
- Neither IPO occurs by December 31, 2027, 11:59 PM ET.
- Both SpaceX and OpenAI complete an IPO within this market's timeframe, and their IPO closing market capitalizations are exactly equal.
- Both companies become unable to complete an IPO, including due to acquisition, merger, or absorption by an entity that is already publicly traded.

Market capitalization is defined as the total number of outstanding shares multiplied by the closing share price on the first trading day.

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 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.

OpenAI IPO by...?

SpaceX Closing Market Cap End of IPO Month

Largest IPO by market cap in 2026?

Anthropic IPO by __?

SpaceX IPO: Closing Price Up/Down End of First Month?

Discord IPO Closing Market Cap

Anthropic IPO Closing Market Cap (Middle Brackets)

Anthropic IPO Closing Market Cap (Lower Brackets)

IPOs before 2027?

Anthropic IPO Closing Market Cap

Anthropic IPO Closing Market Cap

OpenAI IPO Closing Market Cap

Freddie Mac IPO Closing Market Cap

Stripe IPO Closing Market Cap

SpaceX IPO: Officially added to Nasdaq-100 in 2026?

Lead Bank in Anthropic's IPO?

Databricks IPO Closing Market Cap

Will Anthropic or OpenAI IPO first?

Oura IPO Closing Market Cap

Fannie Mae IPO Closing Market Cap

What will OpenAI's public ticker be?

OpenAI IPO Closing Market Cap

SpaceX IPO: Officially added to S&P 500 in 2026?

SpaceX or OpenAI higher IPO Market Cap?