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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 899 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 629.9K 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
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 $6.63M
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 947.3K contracts
10.0 or above earthquake before 2027?
PM $833.2K
When will OpenAI officially announce an IPO?
K 510.8K 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 502.5K contracts
9.0 or above earthquake before 2027?
PM $332.5K
Will 2026 be the hottest year ever?
K 427.8K contracts
5kt meteor strike in 2026?
PM $314.9K
Will OpenAI or Anthropic IPO first?
K 420.6K contracts
Natural Disaster in 2026?
PM $250.2K
Where will it rain on Oct 18, 2026?
K 393.1K contracts
New COVID variant of concern before 2027?
PM $247.2K
Boeing commercial airplane deliveries in 2026
K 376.3K contracts
Highest temperature in Cape Town on October 18?
PM $224.6K
Where will it rain this weekend (Oct 17 - Oct 18)?
K 254.0K 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.

When will Starlink officially announce an IPO?
K 243.6K contracts
Robinhood funded customers in 2026
K 218.8K contracts
When will the Danube River return to normal levels?
PM $152.1K
What will Trump say this week?
K 211.6K contracts
Major volcano eruption (VEI ≥6) in 2026?
PM $147.8K
Which companies will release a Fully AI-generated multi-episode scripted series before 2027?
K 192.4K contracts
Will any Category 5 hurricane make landfall in the US in before 2027?
PM $142.8K
Will there be a Trump economic boom?
K 181.3K contracts
When will the Rhine River return to normal levels?
PM $134.7K
When will any company achieve AGI?
K 180.4K contracts
1 megaton meteor strike in 2026?
PM $117.5K
American Express cards-in-force in Q3
K 179.7K contracts
What will the peak RONI be for the 2026–27 El Niño?
PM $105.2K
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
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.

Will a hurricane make landfall in Hawaii in 2026?
K 171.3K contracts
How many Semi Trucks will Tesla Produce in a quarter in 2026?
K 167.5K contracts
Strava IPO Closing Market Cap
PM $91.6K
How many major Atlantic hurricanes will there be in 2026?
K 153.1K contracts
Highest temperature in Hong Kong on October 17?
PM $91.2K
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
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
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
Related or unreviewed contracts may settle differently. Their gap is not an equivalent-contract comparison.
Saved prices; check contract rules.
