Use the internal polymarket geolocation service.

poly_geo

Improved notification preferences and types.

notifications_v2

funkit_deposit

funkit_withdraw

authenticated_book_ws

Improved in-game view for sports markets.

mobile_sports_overlay_v2

async_order_submission

Enable updates from the sports websocket.

sports_websocket

Show/hide language selector in navigation

language_selector

This market will resolve according to the name ranked #1 on the Bloomberg Billionaires Index on March 31, 2026, 5:30 PM ET.

The primary resolution source for this market will be the Bloomberg Billionaires Index (https://www.bloomberg.com/billionaires/). If the data for the specified date is not released by March 31, 2026, 11:59 PM ET, the Forbes Real-Time Billionaires List will be used (https://www.forbes.com/real-time-billionaires/#6aa3f0213d78). If neither source provides the specified date's data by April 2, 2026, 11:59 PM ET, this market will resolve according to the latest data point available on the Bloomberg Billionaires Index.

Larry Ellison

Bernard Arnault

Jensen Huang

Steve Ballmer

Sergey Brin

Elon Musk

Mark Zuckerberg

Jeff Bezos

Warren Buffett

Larry Page

Richest person

Richest person on March 31?

This market will resolve according to the name ranked #1 on the Bloomberg Billionaires Index on September 30, 2025, 5:30 PM ET.

The primary resolution source for this market will be the Bloomberg Billionaires Index (https://www.bloomberg.com/billionaires/). If the data for the specified date is not released by September 30, 2025, 11:59 PM ET, the Forbes Real-Time Billionaires List will be used (https://www.forbes.com/real-time-billionaires/#6aa3f0213d78). If neither source provides the specified date's data by October 3, 2026, 11:59 PM ET, this market will resolve according to the latest data point available on the Bloomberg Billionaires Index.

Richest person on September 30?

This market will resolve according to the name ranked #1 on the Bloomberg Billionaires Index on December 31, 2025, 5:30 PM ET.

The primary resolution source for this market will be the Bloomberg Billionaires Index (https://www.bloomberg.com/billionaires/). If the data for the specified date is not released by December 31, 2025, 11:59 PM ET, the Forbes Real-Time Billionaires List will be used (https://www.forbes.com/real-time-billionaires/#6aa3f0213d78). If neither source provides the specified date's data by January 2, 2026, 11:59 PM ET, this market will resolve according to the latest data point available on the Bloomberg Billionaires Index.

Richest person on December 31?

This market will resolve according to the name ranked #1 on the Bloomberg Billionaires Index on December 31, 2026, 5:30 PM ET.

The primary resolution source for this market will be the Bloomberg Billionaires Index (https://www.bloomberg.com/billionaires/). If the data for the specified date is not released by December 31, 2026, 11:59 PM ET, the Forbes Real-Time Billionaires List will be used (https://www.forbes.com/real-time-billionaires/#6aa3f0213d78). If neither source provides the specified date's data by January 2, 2027, 11:59 PM ET, this market will resolve according to the latest data point available on the Bloomberg Billionaires Index.

Richest person on December 31, 2026?

This market will resolve to the company that owns the model with the top LiveBench “coding average” score on the LiveBench AI model leaderboard (https://livebench.ai/#/) on March 31, 2026 at 12:00 PM ET. 

If two models are tied for the top LiveBench coding average score at this market's check time, resolution will be based on whichever company's name, as it is described in this market group, comes first in alphabetical order.

The primary source of resolution for this market will be LiveBench’s AI leaderboard, specifically the “coding average” category, found at livebench.ai. If this resolution source is unavailable at check time, this market will remain open until the leaderboard comes back online and resolve based on the first check after it becomes available. If it becomes permanently unavailable, this market will resolve based on another resolution source.

Will OpenAI have the best AI model for coding on March 31?

This market will resolve according to the named people no longer serving as CEOs of their respective companies for any length of time between November 17, 2025 and December 31, 2026, 11:59 PM ET. 

An announcement of the named CEO's resignation/firing before this market's end date will immediately resolve this market to "Yes", regardless of when the announced resignation/firing goes into effect.

This market's primary resolution source will be official information from the named CEOs and their respective companies, however a consensus of credible reporting sources will also be used.

Dan Clancy out as Twitch CEO before 2027?

This market will resolve according to the winner of the 2026 Nobel Peace Prize, as announced by the Norwegian Nobel Committee.

If multiple listed individuals or entities jointly receive the prize, the market will resolve to a single winner. If Donald Trump, Volodymyr Zelenskyy,  Benjamin Netanyahu, Vladimir Putin, or Elon Musk are among the recipients, the market will resolve to the highest-ranked among them in that exact order of precedence. If none of those five are among the winners and the prize is awarded jointly to at least one listed individual and at least one listed organization, the market will resolve in favor of the individual. If no prioritized individuals are among the winners and all listed recipients are of the same type (all individuals or all organizations), the market will resolve to the person whose last name, or the entity’s name, comes first in alphabetical order as listed in this market.

If no official announcement regarding the 2026 Nobel Peace Prize has been made by March 31, 2027, 11:59 PM ET, this market will resolve to "Other."

The resolution source for this market will be the first official announcement from the Norwegian Nobel Committee.

Will Donald Trump win the Nobel Peace Prize in 2026?

This market will resolve according to the number 1 artist on the Billboard 2026 Year-End Top Artists chart.

If Billboard does not publish a 2026 Year-End Top Artists chart by March 31, 2027, this market will resolve to “Other”.

The primary resolution source for this market will be the Billboard Year-End 2026 Top Artists Chart, once it becomes available.

Will Taylor Swift be the Billboard #1 top artist in 2026?

A one-time wealth tax on billionaires has been proposed to potentially appear on California's ballot for the November 3, 2026 general election. You can read more about that here: https://6abc.com/post/california-union-proposes-taxing-billionaires-offset-medicaid-cuts-low-income-people/18066430/

This market will resolve to "Yes" if any proposition containing a one-time tax targeting individuals, households, or family units with wealth, assets, or net worth of at least $1 billion (USD or equivalent) passes in the named election. Otherwise, this market will resolve to "No".

If no qualifying ballot initiative is certified to appear on the official statewide California ballot as a proposition to be voted on in the stated election by June 25, 2026, 11:59 PM ET (the official cutoff date for new initiatives to be approved), or if all qualifying propositions/initiatives are removed from the ballot or amended before the election such that the main threshold drops below $1 billion, this market will resolve "No".

The primary resolution source for this market will be official information from the Government of the State of California, however a consensus of credible reporting may also be used.

Billionaire one-time wealth tax passes in California election 2026?

This market will resolve to "Yes" if a ballot initiative is certified to appear on the official statewide California ballot for the November 3, 2026 election, that proposes a one-time tax targeting individuals, households, or family units with wealth, assets, or net worth of at least $1 billion (USD or equivalent), by June 25, 2026, 11:59 PM ET (the official cutoff date for new initiatives to be approved). Otherwise, this market will resolve to "No".

Certification means the initiative is officially approved by the California Secretary of State for a statewide ballot.

The primary resolution source will be official information from the government of California. If unavailable, a consensus of credible reporting may be used. 

Billionaire one-time wealth tax on California ballot?

This market will resolve according to the fighter that is ranked first in the UFC Pound-For-Pound rankings on December 31, 2026 at 12:00 PM ET.

If, for any reason, there is no fighter ranked first in the UFC Pound-For-Pound Rankings at this market’s check-time, this market will resolve to “Other”.

The primary resolution source for this market will be official information from the UFC (https://www.ufc.com/athletes).

Will Islam Makhachev be ranked first in the UFC Pound-For-Pound Rankings at the end of 2026?

This market will resolve according to the percentage change in the S&P 500 Index (SPX) in the first quarter of 2026 (January 1 - March 31). 

The percentage change in the S&P 500 Index (SPX) in the specified quarter will be calculated by comparing the official closing price for the S&P 500 Index (SPX) for the final trading day of the quarter to the official closing price for the S&P 500 Index (SPX) for the final trading day of the previous quarter, as reported by the Wall Street Journal. The closing price for the final trading day of the previous quarter will be subtracted from the closing price for the final trading day of the specified quarter, and then that difference will be divided by the closing price for the final trading day of the previous quarter.

Percentage changes will be rounded to two decimal places away from zero (e.g. a percentage change of 4.995% would be considered 5.00%, and a percentage change of 4.993% would be considered 4.99%)

If any relevant trading day is shortened (for example, due to a market-holiday schedule), the official closing price published for that shortened session will still be used for resolution.

If no official closing price is published for a relevant trading day (for example, due to a trading halt into the close, system issue, or other disruption), this market will use the most recent official price published by the specified resolution source as the effective closing price.

If the percentage change in the S&P 500 Index (SPX) in the first quarter of 2026 falls exactly between two listed brackets, this market will resolve to the higher bracket.

The resolution source for this market will be the Wall Street Journal, specifically the daily CLOSE prices for the S&P 500 Index (SPX) published on the S&P 500 Index (SPX) historical prices page (https://www.wsj.com/market-data/quotes/index/SPX/historical-prices).

Will the percentage change in the S&P 500 in Q1 2026 be less than 0%?

This market will resolve to "Yes" if the listed company has the highest arena score on the Chatbot Arena LLM Leaderboard (https://lmarena.ai/) for any amount of time by June 30, 2026, 11:59 PM ET. Otherwise, this market will resolve to "No."

Results from the "Arena Score" section on the Leaderboard tab of https://lmarena.ai/ with the style control unchecked will be used to resolve this market.

If a listed model ties for #1 Arena score, it will suffice to resolve this market to "Yes."

The resolution source for this market is the Chatbot Arena LLM Leaderboard found at https://lmarena.ai/. If this resolution source becomes unavailable, the market will remain open until it is accessible again. If it becomes permanently unavailable, resolution will be based on another credible source.

Will xAI have a #1 AI model by June 30?

This market will resolve according to the median home value for all property types in the United States on February 1, 2026.

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

The resolution source will be official data from the Parcl Labs Sales Price Index for the United States (Parcl_ID: 5826765).  The settlement price will be calculated by multiplying the published price index value (price per square foot) by 2000, which is the median square footage for homes in the US. Parcl is set to publish this data on February 1, 2026. If no data for February 1 is released by February 10, 2026, 11:59PM ET, this market will resolve according to the most recently published data. (see: https://app.parcllabs.com/prediction-market-resolutions/6)


Will the median home value in the US be greater than $418,000 by February 1?

This market will resolve to “Yes” if the Consumer Price Index (CPI) increased by greater than the listed percent over the 12 month period ending with any month in 2026 according to the monthly Bureau of Labor Statistics (BLS) reports. Otherwise, this market will resolve to "No".

The resolution source for this market will be the BLS Consumer Price Index reports released for each month of 2026 (https://www.bls.gov/bls/news-release/cpi.htm). Resolution of this market will take place upon release of the aforementioned data.

This market may not resolve to "No" until the December 2026 report is issued. Once the December 2026 report is issued, any revisions to previously released CPI figures will not be counted toward this market's resolution. If the CPI report for December 2026 is not issued by January 31, 2027, 11:59 PM ET, this market will resolve based on CPI figures which have already been made available by the BLS.

Note: the resolution source for this market will be the official monthly BLS CPI news release which reports inflation over 12 month periods to only one decimal point (e.g. 2.9%). Thus, this is the level of precision that will be used when resolving the market.

Richest person on March 31?

Elon Musk
$18,370 Vol.
98%

Bernard Arnault
$20,167 Vol.
1%

Larry Ellison
$4,538 Vol.
<1%

Jeff Bezos
$7,989 Vol.
<1%

Jensen Huang
$5,563 Vol.
<1%

Mark Zuckerberg
$5,396 Vol.
<1%

Larry Page
$5,153 Vol.
<1%

Steve Ballmer
$3,154 Vol.
<1%

Sergey Brin
$3,614 Vol.
<1%

Warren Buffett
$12,604 Vol.
<1%

Market Context

Richest person on March 31?

Rules

Richest person on March 31?

Market Context

Richest person on March 31?

About

Related

Richest person on March 31?

Elon Musk$18,370 Vol.98%buy Yes98.3¢buy No2.0¢

Bernard Arnault$20,167 Vol.1%buy Yes0.9¢buy No99.4¢

Larry Ellison$4,538 Vol.<1%buy Yes0.5¢buy No99.7¢

Jeff Bezos$7,989 Vol.<1%buy Yes0.5¢buy No99.7¢

Jensen Huang$5,563 Vol.<1%buy Yes0.3¢buy No99.9¢

Mark Zuckerberg$5,396 Vol.<1%buy Yes0.3¢buy No99.9¢

Larry Page$5,153 Vol.<1%buy Yes0.3¢buy No99.9¢

Steve Ballmer$3,154 Vol.<1%buy Yes0.2¢buy No99.9¢

Sergey Brin$3,614 Vol.<1%buy Yes0.2¢buy No99.9¢

Warren Buffett$12,604 Vol.<1%buy Yes0.2¢buy No99.9¢

Market Context

Richest person on March 31?

Rules

Richest person on March 31?

Market Context

Richest person on March 31?

About

Related

Elon Musk
$18,370 Vol.
98%

Bernard Arnault
$20,167 Vol.
1%

Larry Ellison
$4,538 Vol.
<1%

Jeff Bezos
$7,989 Vol.
<1%

Jensen Huang
$5,563 Vol.
<1%

Mark Zuckerberg
$5,396 Vol.
<1%

Larry Page
$5,153 Vol.
<1%

Steve Ballmer
$3,154 Vol.
<1%

Sergey Brin
$3,614 Vol.
<1%

Warren Buffett
$12,604 Vol.
<1%