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Showing 1-48 of 577 event groups
Ranked within each platform by reported lifetime volume. Polymarket reports dollars; Kalshi reports contracts.
PolymarketKalshiPolitics
Will the U.S. confirm that aliens exist?
PM $74.12M · K 33.41M contractsWill the US confirm that aliens exist before 2027?
Kalshi: Will the U.S. confirm that aliens exist before 2027?
Related contracts
PM Yes 5.1%Rules differK Yes 4.2%
Will the US confirm that aliens exist by October 31?
Kalshi: Will the U.S. confirm that aliens exist before Nov 1, 2026?
Related contracts
PM Yes 0.5%Rules differK Yes 0.5%
Related or unreviewed contracts may settle differently. Their gap is not an equivalent-contract comparison.
Saved prices; check contract rules.
2 saved comparisonsNext deadline Nov 1, 2026 UTC
KalshiCompanies
Which companies will officially announce an IPO this year?
K 2.09M contractsWho will IPO before 2027? (Anthropic)Yes 71%
Who will IPO before 2027? (Discord)Yes 10.5%
Who will IPO before 2027? (Skims)Yes 6.5%
+24 moreNext deadline Jan 8, 2027 UTC
PolymarketKalshiHealth
Pandemic in 2026?
PM $18.62M · K 984.2K contractsHantavirus pandemic in 2026?
Kalshi: Pandemic in 2026?
Related contracts
PM Yes 1.4%Rules differK Yes 5%
Related or unreviewed contracts may settle differently. Their gap is not an equivalent-contract comparison.
Saved prices; check contract rules.
1 saved comparisonNext deadline Jan 1, 2027 UTC
KalshiScience and Technology
Will WHO declare Hantavirus a Public Health Emergency of International Concern this Year?
K 2.02M contractsHantavirus Public Health Emergency of International Concern by 2026?Yes 3.9%
1 mktNext deadline Jan 1, 2027 UTC
PolymarketKalshiClimate
Measles cases in U.S. in 2026?
PM $8.13M · K 629.9K contractsWill there be at least 5000 measles cases in the U.S. in 2026?
Kalshi: Will there be more than 5000 measles cases in 2026?
Related contracts
PM Yes 98%Rules differK Yes 97%
Will there be at least 6000 measles cases in the U.S. in 2026?
Kalshi: Will there be more than 6000 measles cases in 2026?
Related contracts
PM Yes 89%Rules differK Yes 83.5%
Will there be at least 7000 measles cases in the U.S. in 2026?
Kalshi: Will there be more than 7000 measles cases in 2026?
Related contracts
PM Yes 54%Rules differK Yes 55%
Related or unreviewed contracts may settle differently. Their gap is not an equivalent-contract comparison.
Saved prices; check contract rules.
4 saved comparisonsNext deadline Jan 1, 2027 UTC
KalshiPolitics
Will Americans receive tariff stimulus checks?
K 1.51M contractsWill it be reported that at least one million Americans have received checks of at least $1000 directly attributable to tariff revenue?Yes 3.3%
1 mktNext deadline Jan 8, 2027 UTC
KalshiCompanies
When will Anthropic officially announce an IPO?
K 1.26M contractsWhen will Anthropic officially announce an IPO? (Before Apr 1, 2027)Yes 85.5%
When will Anthropic officially announce an IPO? (Before Mar 1, 2027)Yes 83%
When will Anthropic officially announce an IPO? (Before Feb 1, 2027)Yes 73.5%
+4 moreNext deadline Oct 31, 2026 UTC
PolymarketKalshiTech
Which company has the best AI model end of October?
PM $5.45M · K 14.77M contractsWill Google have the best AI model at the end of October 2026?
Kalshi: Best AI on Dec 31, 2026? (Gemini)
Related contracts
PM Yes 75.6%Rules differK Yes 37.8%
Will Anthropic have the best AI model at the end of December 2026?
Kalshi: Best AI on Dec 31, 2026? (Claude)
Related contracts
PM Yes 47.5%Rules differK Yes 46.9%
Will Anthropic have the best AI model at the end of October 2026?
Kalshi: Best AI on Dec 31, 2026? (Claude)
Related contracts
PM Yes 23.5%Rules differK Yes 46.9%
Related or unreviewed contracts may settle differently. Their gap is not an equivalent-contract comparison.
Saved prices; check contract rules.
15 saved comparisonsNext deadline Oct 31, 2026 UTC
KalshiEntertainment
Top Artist on Spotify U.S. 2026
K 1.18M contractsWill Drake be the #1 most streamed Artist on the 2026 Spotify Wrapped Top 10 Artist U.S chart on the date that the chart is released for 2026?Yes 82.5%
Will Taylor Swift be the #1 most streamed Artist on the 2026 Spotify Wrapped Top 10 Artist U.S chart on the date that the chart is released for 2026?Yes 12%
Will Bad Bunny be the #1 most streamed Artist on the 2026 Spotify Wrapped Top 10 Artist U.S chart on the date that the chart is released for 2026?Yes 3%
+13 moreNext deadline Jan 7, 2027 UTC
PolymarketScience
Where will 2026 rank among the hottest years on record?
PM $3.79MWill 2026 be the hottest year on record?Yes 82.5%
Will 2026 be the second-hottest year on record?Yes 18%
Will 2026 be the third-hottest year on record?Yes 0.3%
+3 moreNext deadline Dec 31, 2026 UTC
KalshiCompanies
Which AI company will have the best coding model at the end of 2026?
K 1.16M contractsWhich AI company will have the best coding model on Dec 31, 2026? (Anthropic)Yes 74%
Which AI company will have the best coding model on Dec 31, 2026? (OpenAI)Yes 13.5%
Which AI company will have the best coding model on Dec 31, 2026? (Google)Yes 3%
+6 moreNext deadline Dec 31, 2026 UTC
PolymarketKalshiCulture
Top artist on Spotify in 2026?
PM $1.73M · K 818.3K contractsWill Bad Bunny be the top artist for 2026?
Kalshi: Who will be the top Spotify artist this year? (Bad Bunny)
Related contracts
PM Yes 85.5%Rules differK Yes 85.5%
Will Taylor Swift be the top artist for 2026?
Kalshi: Who will be the top Spotify artist this year? (Taylor Swift)
Related contracts
PM Yes 10.3%Rules differK Yes 11.5%
Will Drake be the top artist for 2026?
Kalshi: Who will be the top Spotify artist this year? (Drake)
Related contracts
PM Yes 2.9%Rules differK Yes 3%
Related or unreviewed contracts may settle differently. Their gap is not an equivalent-contract comparison.
Saved prices; check contract rules.
9 saved comparisonsNext deadline Feb 1, 2027 UTC
KalshiEconomics
Which companies will the US take a stake in this year?
K 1.10M contractsWill any part of the United States federal government take a stake of above 0% in Unusual Machines?Yes 30.5%
Will any part of the United States federal government take a stake of above 0% in Anduril?Yes 22.5%
Will any part of the United States federal government take a stake of above 0% in Neros Technologies?Yes 20%
+15 moreNext deadline Jan 8, 2027 UTC
PolymarketHealth
Ebola pandemic in 2026?
PM $784.1KEbola pandemic in 2026?Yes 2.1%
1 mktNext deadline Jan 1, 2027 UTC
KalshiScience and Technology
US grants license for new nuclear reactor before 2027?
K 833.8K contractsWill a new nuclear reactor be approved by Dec 31, 2026?Yes 5.8%
1 mktNext deadline Jan 1, 2027 UTC
PolymarketScience
FDA approves Retatrutide this year?
PM $595.2KFDA approves Retatrutide this year?Yes 2.5%
1 mktNext deadline Jan 1, 2027 UTC
KalshiTech
How many launches will SpaceX have in 2026?
K 741.1K contractsHow many launches will SpaceX have in 2026? (Above 120)Yes 98.5%
How many launches will SpaceX have in 2026? (Above 140)Yes 79.5%
How many launches will SpaceX have in Dec 2026? (Above 145)Yes 28%
+7 moreNext deadline Jan 7, 2027 UTC
PolymarketScience
How many SpaceX Starship launches reach space in 2026?
PM $525.0KWill less than 5 SpaceX Starship launches successfully reach Space in 2026?Yes 54%
Will 5-6 SpaceX Starship launches successfully reach Space in 2026?Yes 37%
Will 7-8 SpaceX Starship launches successfully reach Space in 2026?Yes 1.2%
+5 moreNext deadline Jan 1, 2027 UTC
KalshiCulture
Grand Theft Auto VI: The Album · Features
K 721.6K contractsWill SZA be featured on Grand Theft Auto VI: The Album?Yes 99.5%
Will Rauw Alejandro be featured on Grand Theft Auto VI: The Album?Yes 99.5%
Will PinkPantheress be featured on Grand Theft Auto VI: The Album?Yes 99.5%
+127 moreNext deadline Jan 7, 2027 UTC
PolymarketScience
Plague pandemic in 2026?
PM $493.1KPlague pandemic in 2026?Yes 1.8%
1 mktNext deadline Jan 1, 2027 UTC
PolymarketKalshiTech
When will an AI lab solve another Millennium Prize Problem?
PM $460.4K · K 10.4K contractsWill an AI lab announce another Millennium Prize solution by December 31, 2027?
Kalshi: Will any AI lab solve a Millennium Prize Problem before 2028?
Related contracts
PM Yes 64.5%Rules differK Yes 65.5%
Will an AI lab announce another Millennium Prize solution by December 31, 2026?
Kalshi: Will any AI lab solve a Millennium Prize Problem before 2027?
Related contracts
PM Yes 24.5%Rules differK Yes 33%
Related or unreviewed contracts may settle differently. Their gap is not an equivalent-contract comparison.
Saved prices; check contract rules.
2 saved comparisonsNext deadline Nov 7, 2026 UTC
KalshiScience and Technology
When will Anthropic release Mythos?
K 714.7K contractsWill Anthropic release Mythos before Jan 1, 2027?Yes 10%
Will Anthropic release Mythos before Dec 1, 2026?Yes 2.5%
Will Anthropic release Mythos before Nov 1, 2026?Yes 2%
3 mktsNext deadline Nov 8, 2026 UTC
KalshiScience
NASA lands on the moon?
K 554.0K contractsWill NASA land a person on the Moon by 2029?Yes 41.5%
Will NASA land a person on the Moon by 2028?Yes 23.5%
Will NASA land a person on the Moon before 2028?Yes 3.1%
+1 moreNext deadline Jan 1, 2027 UTC
PolymarketScience
How many SpaceX launches in 2026?
PM $336.4KWill SpaceX have between 140-159 launches in 2026?Yes 77.8%
Will SpaceX have between 120-139 launches in 2026?Yes 7.8%
Will SpaceX have between 180-199 launches in 2026?Yes 4.7%
+3 moreNext deadline Jan 1, 2027 UTC
KalshiScience
Washington aerospace manufacturing employment average in 2026
K 522.7K contractsWill Washington’s annual-average employment in Aerospace Product and Parts Manufacturing for 2026 be above 80,000 jobs?Yes 97.5%
Will Washington’s annual-average employment in Aerospace Product and Parts Manufacturing for 2026 be above 81,000 jobs?Yes 96.5%
Will Washington’s annual-average employment in Aerospace Product and Parts Manufacturing for 2026 be above 82,000 jobs?Yes 92.5%
+10 moreNext deadline May 7, 2027 UTC
PolymarketKalshiTech
When will OpenAI achieve AGI?
PM $331.3K · K 868.2K contractsOpenAI announces it has achieved AGI before 2027?
Kalshi: Will OpenAI announce the creation of AGI? (Before 2027)
Related contracts
PM Yes 8.5%Rules differK Yes 5%
Related or unreviewed contracts may settle differently. Their gap is not an equivalent-contract comparison.
Saved prices; check contract rules.
1 saved comparisonNext deadline Jan 1, 2027 UTC
PolymarketKalshiTech
Will a Chinese company have a top ___ AI model by December 31?
PM $278.2K · K 140.2K contractsWill a Chinese company have the best AI model by December 31?
Kalshi: Will a Chinese AI model be #1 this year?
Related contracts
PM Yes 6.5%Rules differK Yes 8.5%
Related or unreviewed contracts may settle differently. Their gap is not an equivalent-contract comparison.
Saved prices; check contract rules.
1 saved comparisonNext deadline Jan 1, 2027 UTC
KalshiTech
Best AI in Oct 2026?
K 510.9K contractsBest AI in Oct 2026? (Gemini)Yes 75.5%
Best AI in Oct 2026? (Claude)Yes 24.5%
Best AI in Oct 2026? (Muse)Yes 1.5%
+4 moreNext deadline Dec 1, 2026 UTC
PolymarketKalshiEconomy
Will Stripe acquire PayPal this year?
PM $187.0K · K 29.8K contractsWill Stripe acquire Paypal in 2026?
Kalshi: Will Stripe and Advent International (collectively) announce acquisition of PayPal before Jan 1, 2027?
Related contracts
PM Yes 3.7%Rules differK Yes 7%
Will Stripe acquire any part of Paypal in 2026?
Kalshi: Will Stripe and Advent International (collectively) announce acquisition of PayPal before Jan 1, 2027?
Related contracts
PM Yes 5.5%Rules differK Yes 7%
Related or unreviewed contracts may settle differently. Their gap is not an equivalent-contract comparison.
Saved prices; check contract rules.
2 saved comparisonsNext deadline Jan 1, 2027 UTC
KalshiCompanies
When will OpenAI officially announce an IPO?
K 510.8K contractsWhen will OpenAI IPO? (Before Jun 1, 2027)Yes 51%
When will OpenAI IPO? (Before May 1, 2027)Yes 46%
When will OpenAI IPO? (Before Apr 1, 2027)Yes 29.5%
+5 moreNext deadline Nov 8, 2026 UTC
KalshiTech
OpenAI market share this week
K 508.1K contractsOpenAI market share this week? (Above 18.4%)Yes 99.5%
OpenAI market share this week? (Above 18.1%)Yes 99.5%
OpenAI market share this week? (Above 17.1%)Yes 99.5%
+6 moreNext deadline Oct 19, 2026 UTC
PolymarketHealth
Hantavirus vaccine in 2026?
PM $142.4KHantavirus vaccine in 2026? Yes 3%
1 mktNext deadline Jan 1, 2027 UTC
KalshiTech
Google market share this week
K 478.4K contractsGoogle market share this week? (Above 19.5%)Yes 99.5%
Google market share this week? (Above 18.9%)Yes 99.5%
Google market share this week? (Above 18.7%)Yes 99.5%
+6 moreNext deadline Oct 19, 2026 UTC
PolymarketKalshiTech
Tesla Optimus released this year?
PM $132.9K · K 433.3K contractsWill Tesla release Optimus by December 31, 2026?
Kalshi: Tesla Optimus on sale before 2027?
Related contracts
PM Yes 12.3%Rules differK Yes 5.5%
Related or unreviewed contracts may settle differently. Their gap is not an equivalent-contract comparison.
Saved prices; check contract rules.
1 saved comparisonNext deadline Dec 31, 2026 UTC
KalshiScience and Technology
DeepSeek market share this week
K 450.5K contractsDeepSeek market share this week? (Above 24.1%)Yes 99.5%
DeepSeek market share this week? (Above 23.9%)Yes 99.5%
DeepSeek market share this week? (Above 23.2%)Yes 99.5%
+6 moreNext deadline Oct 19, 2026 UTC
PolymarketScience
Russia pneumonic plague spreads abroad?
PM $111.9KRussia pneumonic plague spreads abroad?Yes 4.2%
1 mktNext deadline Jan 1, 2027 UTC
PolymarketKalshiEconomy
Bank of Russia rate decision in October
PM $96.4K · K 4.0K contractsWill the Bank of Russia make no change to the key rate after the October Meeting?
Kalshi: Will the Bank of Russia maintain current rate at the October Board of Directors’ key rate meeting?
Related contracts
PM Yes 92%Rules differK Yes 92.5%
Will the Bank of Russia decrease the key rate after the October Meeting?
Kalshi: Will the Bank of Russia cut 1-25bps at the October Board of Directors’ key rate meeting?
Related contracts
PM Yes 8.5%Rules differK Yes 3%
Will the Bank of Russia increase the key rate after the October Meeting?
Kalshi: Will the Bank of Russia hike 1-25bps at the October Board of Directors’ key rate meeting?
Related contracts
PM Yes 0.4%Rules differK Yes 2.5%
Related or unreviewed contracts may settle differently. Their gap is not an equivalent-contract comparison.
Saved prices; check contract rules.
3 saved comparisonsNext deadline Oct 24, 2026 UTC
KalshiTech
Which companies will have a top-ranked AI model this year?
K 425.0K contractsWill OpenAI have a top-ranked AI model before 2027?Yes 13.5%
Will xAI have a top-ranked AI model before 2027?Yes 9.5%
Will ByteDance have a top-ranked AI model before 2027?Yes 7.5%
+9 moreNext deadline Jan 1, 2027 UTC
KalshiCompanies
Will OpenAI or Anthropic IPO first?
K 420.6K contractsWill Open AI or Anthropic IPO first?Yes 93%
Will OpenAI or Anthropic IPO first?Yes 7.5%
2 mktsNext deadline Jan 8, 2040 UTC
PolymarketScience
Another pneumonic plague case in Russia by...?
PM $94.8KWill a new pneumonic plague case be confirmed in Russia by October 31?Yes 2.1%
1 mktNext deadline Nov 1, 2026 UTC
KalshiScience and Technology
Will the FDA approve any psychedelic substance for medical use this year?
K 414.1K contractsWill the FDA approve Any psychedelic substance for medical use this year?Yes 20%
1 mktNext deadline Jan 8, 2027 UTC
PolymarketSports
Strava IPO Closing Market Cap
PM $91.6KWill Strava’s market cap be between $7B and $10B at market close on IPO day?Yes 31.4%
Will Strava’s market cap be between $2B and $3B at market close on IPO day?Yes 30.5%
Will Strava’s market cap be between $4B and $5B at market close on IPO day?Yes 27.5%
+6 moreNext deadline Jan 1, 2028 UTC
PolymarketKalshiFinance
Lead Bank in Anthropic's IPO?
PM $89.8K · K 41.1K contractsWill Morgan Stanley or any of its underwriting affiliates serve as the lead underwriter in Anthropic's initial public offering?
Kalshi: Will Morgan Stanley serve as lead-left underwriter on Anthropic's IPO?
Related contracts
PM Yes 82%Rules differK Yes 82%
Will Goldman Sachs or any of its underwriting affiliates serve as the lead underwriter in Anthropic's initial public offering?
Kalshi: Will Goldman Sachs serve as lead-left underwriter on Anthropic's IPO?
Related contracts
PM Yes 16.7%Rules differK Yes 16%
Will Citigroup or any of its underwriting affiliates serve as the lead underwriter in Anthropic's initial public offering?
Kalshi: Will Citigroup serve as lead-left underwriter on Anthropic's IPO?
Related contracts
PM Yes 0.6%Rules differK Yes 2%
Related or unreviewed contracts may settle differently. Their gap is not an equivalent-contract comparison.
Saved prices; check contract rules.
5 saved comparisonsNext deadline Jan 1, 2028 UTC
KalshiHealth
Which countries will report an Ebola case in 2026?
K 386.9K contractsWill a human case of Ebola disease in Central African Republic be reported before Jan 1, 2027?Yes 68%
Will a human case of Ebola disease in South Sudan be reported before Jan 1, 2027?Yes 35.5%
Will a human case of Ebola disease in Somalia be reported before Jan 1, 2027?Yes 29.5%
+12 moreNext deadline Jan 8, 2027 UTC
KalshiCompanies
Boeing commercial airplane deliveries in 2026
K 376.3K contractsWill Boeing Company (The) report Above 560 commercial airplane deliveries in 2026?Yes 96.5%
Will Boeing Company (The) report Above 580 commercial airplane deliveries in 2026?Yes 94.5%
Will Boeing Company (The) report Above 600 commercial airplane deliveries in 2026?Yes 93.5%
+5 moreNext deadline Mar 31, 2028 UTC
PolymarketKalshiEconomy
Bank of Mexico rate decision in November
PM $68.8K · K 37.7K contractsNo change in Bank of Mexico’s interest rates after November 2026 meeting?
Kalshi: Will the Bank of Mexico Maintain current rate at the November Bank of Mexico Governing Board meeting?
Related contracts
PM Yes 74.5%Rules differK Yes 74.5%
Bank of Mexico decreases interest rates by 25 bps after November 2026 meeting?
Kalshi: Will the Bank of Mexico Cut 25bps at the November Bank of Mexico Governing Board meeting?
Related contracts
PM Yes 20%Rules differK Yes 19%
Bank of Mexico increases interest rates by 25 bps after November 2026 meeting?
Kalshi: Will the Bank of Mexico Hike 25bps at the November Bank of Mexico Governing Board meeting?
Related contracts
PM Yes 2.5%Rules differK Yes 1.5%
Related or unreviewed contracts may settle differently. Their gap is not an equivalent-contract comparison.
Saved prices; check contract rules.
5 saved comparisonsNext deadline Nov 5, 2026 UTC
KalshiScience and Technology
When will the next Millennium Prize be awarded?
K 332.3K contractsWill a Millennium Prize be awarded for any unsolved Millennium Prize Problem before Jan 1, 2035?Yes 83.2%
Will a Millennium Prize be awarded for any unsolved Millennium Prize Problem before Jan 1, 2030?Yes 58.5%
Will a Millennium Prize be awarded for any unsolved Millennium Prize Problem before Jan 1, 2029?Yes 29.5%
+2 moreNext deadline Jan 2, 2027 UTC
PolymarketScience
How many West Nile neuroinvasive disease cases will be reported among New York City residents in 2026?
PM $60.3KWill there be 20 to 34 West Nile neuroinvasive disease cases among NYC residents in 2026?Yes 75.8%
Will there be 35 to 49 West Nile neuroinvasive disease cases among NYC residents in 2026?Yes 20%
Will there be 50 or more West Nile neuroinvasive disease cases among NYC residents in 2026?Yes 3.6%
+1 moreNext deadline Mar 31, 2027 UTC