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Home / Markets / Will CMI declare a Millennium Prize Problem solved by ___?
Live market data

Will CMI declare a Millennium Prize Problem solved by ___?: live odds and probabilities

The market favorite is December 31, 2028 at 28.0%, ahead of December 31, 2027 at 17.5%. $471K traded across 3 outcomes.

Updated 2026-11-06 02:18 UTC · Source: Polymarket · 18+ · Market prices, not predictions or advice

Favorite

28.0%
December 31, 2028 · Trade →

24h move

-8.5
pts · 7d -13.0

Volume

$471K
24h $2K · liquidity $23K

Closes

January 1, 2029
787 days left

CultureScience

All outcomes

OutcomeProbability24h7dVolumeSpread
December 31, 202828.0% -8.5-13.0$64K6.0¢
December 31, 202717.5% 0.0-3.5$93K1.0¢
December 31, 20263.5% -0.3-2.5$315K1.5¢

Prices are the Polymarket mid or last trade at 2026-11-06 02:18 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%07-2509-1511-06
December 31, 2028December 31, 2027December 31, 2026

Market rules and resolution

This market will resolve to "Yes" if the Clay Mathematics Institute (CMI) awards a Millennium Prize for any of the six remaining unsolved Millennium Prize Problems, or otherwise officially declares any of these problems solved on its website or in an official communication, by 11:59 PM ET on the date specified in the title. Otherwise, this market will resolve to "No". This market will resolve solely based on a qualifying declaration by CMI that one of the six remaining unsolved Millennium Prize Problems has been solved, regardless of whether the solution takes the form of a positive proof, counterexample, disproof, or any other resolution accepted by CMI. A Millennium Prize award will qualify as an official declaration, but is not required; an official CMI statement that a problem has been solved is sufficient on its own. Whether the solution was produced in whole or in part by artificial intelligence, and whether any recipient accepts or declines a prize, will not be considered. A published or publicly posted proof will not qualify on its own, regardless of its acceptance by the mathematical community. The primary resolution source will be official information from the Clay Mathematics Institute (e.g., https://www.claymath.org); however, a consensus of credible reporting may be used to confirm that a qualifying CMI declaration or award has occurred.

How to read this market

Each share pays $1 if its outcome happens. Buying December 31, 2028 at 28% risks 28¢ to win 72¢. 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 "Will CMI declare a Millennium Prize Problem solved by ___?"?
As of November 6, 2026, December 31, 2028 is the favorite at 28.0%, followed by December 31, 2027 at 17.5%.
When does this market resolve?
The market is scheduled to close on January 1, 2029. 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?
$471K in total and $2K in the last 24 hours, with about $23K 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.