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Explore the full Polymarket and Kalshi catalog. A group may contain related contracts with different settlement rules.
Showing 1-48 of 880 event groups
Ranked within each platform by reported lifetime volume. Polymarket reports dollars; Kalshi reports contracts.

Which companies will officially announce an IPO this year?
K 2.09M contracts
Measles cases in U.S. in 2026?
PM $8.13M · K 629.5K 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
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
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
Related or unreviewed contracts may settle differently. Their gap is not an equivalent-contract comparison.
Saved prices; check contract rules.

Will Americans receive tariff stimulus checks?
K 1.51M contracts
Largest IPO by market cap in 2026?
PM $6.62M
When will Anthropic officially announce an IPO?
K 1.26M contracts
How many 7.0 or above earthquakes in 2026?
PM $1.48M
Which AI company will have the best coding model at the end of 2026?
K 1.16M contracts
New pandemic in 2026?
PM $1.24M
Which companies will the US take a stake in this year?
K 1.10M contracts
How many large volcano eruptions (VEI ≥4) in 2026?
PM $1.17M
Avengers: Doomsday: Cast
K 944.1K contracts
10.0 or above earthquake before 2027?
PM $833.2K
When will OpenAI officially announce an IPO?
K 510.6K contracts
Will any Category 4 hurricane make landfall in the US in before 2027?
PM $350.6K
Will there be an 8 magnitude earthquake in California before 2027?
K 502.2K contracts
9.0 or above earthquake before 2027?
PM $332.5K
Will 2026 be the hottest year ever?
K 426.7K contracts
5kt meteor strike in 2026?
PM $314.9K
Will OpenAI or Anthropic IPO first?
K 420.5K contracts
Natural Disaster in 2026?
PM $250.2K
Boeing commercial airplane deliveries in 2026
K 376.3K contracts
New COVID variant of concern before 2027?
PM $247.2K
When will Starlink officially announce an IPO?
K 242.1K contracts
Major meteor strike (10kt+) in 2026?
PM $209.4K
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
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
Related or unreviewed contracts may settle differently. Their gap is not an equivalent-contract comparison.
Saved prices; check contract rules.

Where will it rain this weekend (Oct 17 - Oct 18)?
K 226.1K contracts
Robinhood funded customers in 2026
K 218.8K contracts
Highest temperature in Cape Town on October 18?
PM $176.2K
Where will it rain on Oct 18, 2026?
K 216.1K contracts
When will the Danube River return to normal levels?
PM $150.5K
Which companies will release a Fully AI-generated multi-episode scripted series before 2027?
K 192.4K contracts
Major volcano eruption (VEI ≥6) in 2026?
PM $147.8K
Will there be a Trump economic boom?
K 181.3K contracts
Will any Category 5 hurricane make landfall in the US in before 2027?
PM $142.8K
When will any company achieve AGI?
K 180.3K contracts
When will the Rhine River return to normal levels?
PM $134.0K
American Express cards-in-force in Q3
K 179.7K contracts
Highest temperature in Wuhan on October 18?
PM $127.6K
Will a hurricane make landfall in Hawaii in 2026?
K 171.3K contracts
1 megaton meteor strike in 2026?
PM $117.5K
How many Semi Trucks will Tesla Produce in a quarter in 2026?
K 167.5K contracts
What will the peak RONI be for the 2026–27 El Niño?
PM $104.4K
Bank of Russia rate decision in October
PM $95.9K · K 3.4K 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?
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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
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
Related or unreviewed contracts may settle differently. Their gap is not an equivalent-contract comparison.
Saved prices; check contract rules.

How many major Atlantic hurricanes will there be in 2026?
K 152.8K contracts
What will be the largest source of global primary energy consumption in 2030?
K 146.7K contracts
Strava IPO Closing Market Cap
PM $91.6K
Total snowfall in Big Sky in December 2026?
K 135.7K contracts