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Category Breakdown
Compare volume and activity across platforms by category
Kalshi Categories
| Category | Markets | Volume | Change |
|---|---|---|---|
| Politics | 16,851 | $2.8M | -7.2% |
| Sports | 357,373 | $243.0M | +4.2% |
| Crypto | 5,066 | $34.0M | -36.1% |
| Economics | 3,427 | $944.0K | -34.5% |
| Finance | 1,570 | $94.6K | -82.8% |
| Tech | 807 | $206.1K | -11.9% |
| Culture | 6,949 | $452.8K | +2.5% |
| Weather | 1,913 | $733.5K | -47.6% |
| Misc | 1,217 | $210.8K | +482% |
| World | 7,181 | $2.0M | +29.8% |
Polymarket Categories
| Category | Markets | Volume | Change |
|---|---|---|---|
| Politics | 4,626 | $19.3M | -9.3% |
| Sports | 9,552 | $99.3M | -0.1% |
| Crypto | 5,545 | $27.4M | -37.1% |
| Economics | 460 | $1.8M | -30.8% |
| Finance | 664 | $1.3M | -61% |
| Tech | 573 | $919.4K | +7.6% |
| Culture | 504 | $1.2M | +40.9% |
| Weather | 126 | $154.5K | +30.8% |
| Misc | 25,727 | $112.3M | -14.1% |
| Mentions | 11 | $8.0K | -31.3% |
Kalshi Categories
| Category | Markets | Volume | Change |
|---|---|---|---|
| Politics | 18,347 | $24.5M | -31.9% |
| Sports | 1,106,502 | $1.5B | -4.7% |
| Crypto | 15,534 | $319.7M | -13.6% |
| Economics | 3,523 | $9.6M | +15.4% |
| Finance | 5,814 | $3.1M | -39.9% |
| Tech | 714 | $1.1M | -3.6% |
| Culture | 3,714 | $3.4M | -40.9% |
| Weather | 11,381 | $6.3M | -19.9% |
| Misc | 12,367 | $91.5M | +7985.2% |
| World | 26,394 | $11.1M | -20.5% |
Polymarket Categories
| Category | Markets | Volume | Change |
|---|---|---|---|
| Politics | 3,759 | $187.6M | -11.4% |
| Sports | 8,514 | $633.6M | -6.2% |
| Crypto | 13,545 | $312.4M | -21.7% |
| Economics | 358 | $20.0M | +11.8% |
| Finance | 799 | $14.6M | -1.9% |
| Tech | 500 | $6.0M | -30.1% |
| Culture | 433 | $8.0M | -39.1% |
| Weather | 120 | $496.1K | +34.8% |
| Misc | 32,570 | $721.9M | +11.2% |
| Mentions | 12 | $28.1K | -84% |
Kalshi Categories
| Category | Markets | Volume | Change |
|---|---|---|---|
| Politics | 60,435 | $107.8M | -1.7% |
| Sports | 4,749,714 | $6.7B | +5.6% |
| Crypto | 69,044 | $1.3B | +33.5% |
| Economics | 8,952 | $37.6M | -36.3% |
| Finance | 24,396 | $15.6M | +2.7% |
| Tech | 950 | $3.8M | -12.6% |
| Culture | 13,924 | $27.1M | +99.2% |
| Weather | 36,605 | $32.6M | -1% |
| Misc | 18,963 | $95.3M | +2414.3% |
| World | 147,195 | $54.1M | -3.3% |
Polymarket Categories
| Category | Markets | Volume | Change |
|---|---|---|---|
| Politics | 5,296 | $758.9M | -56.8% |
| Sports | 28,081 | $1.8B | -37.9% |
| Crypto | 31,630 | $799.2M | -50.5% |
| Economics | 581 | $91.6M | -64.2% |
| Finance | 1,115 | $44.1M | -0.8% |
| Tech | 648 | $24.1M | -51.5% |
| Culture | 1,294 | $86.4M | -17.7% |
| Weather | 179 | $1.4M | -47.2% |
| Misc | 91,603 | $1.8B | -16.4% |
| Mentions | 24 | $379.3K | +427.9% |
Weekly volume analysis
Prediction Markets Cross $5.6B Week, Kalshi Takes 71% of Volume
Kalshi remained on pace for another monthly volume record during the week of May 18, while Polymarket’s decline widened the gap between the two largest prediction market platforms. Kalshi posted $3.99 billion in notional volume, up 3% from the prior week, according to DeFi Rate’s volume tracker. Polymarket fell 15% to $1.65 billion, down from […]
Texas Political Volume at Kalshi Focusing on Cornyn-Paxton Runoff
Texas political markets have reached $24.2 million of trading volume on Kalshi, but less than $200K in open interest separates Paxton from Cornyn.
2026 PGA Championship Volume Tops $365M at Kalshi as Aaron Rai Defies Odds
Kalshi’s markets for the 2026 PGA Championship topped $365.2 million in volume across all categories, with $9.8 million of that coming from combos or parlays, according to DeFi Rate’s internal market tracking. The Outright Winner market represented nearly $333.5 million of the overall total, although Aaron Rai defied the market with his first career major […]
Kalshi Volume Levels Off at $3.86B as Transactions Drop 46% and Polymarket Bounces Back
Kalshi notional volume dipped 6.6% week-over-week to $3.86B for the week beginning May 11, a much softer decline than the transaction count suggests. Trades fell 46.4% to 13.0M, pointing to larger average trade sizes rather than a broad pullback in activity. Polymarket global held steady at $1.58B (-1.7%), while Polymarket (US) reversed its prior-week collapse […]
Kalshi’s $52 Million UFC Event Had $11.1 Million on Chimaev
Kalshi showed $52 million in contract volume on UFC 328, one of the platform’s biggest fight nights to date. Actual cash exchanged: $18.98 million. Of that, 58.4% backed Khamzat Chimaev, who lost a split decision to Sean Strickland.
Kalshi Widens Volume Lead Over Polymarket With Record $14.8B April
Kalshi pulls away with record April volume of $14.81B (+13.3% MoM) while Polymarket fell 14.8%, widening the gap to $5.8B. Sports-driven model proving more resilient for now with Kalshi’s ~85% Sports + Exotics mix sustaining volume even without Super Bowl or March Madness.
Top Markets by Volume
Highest trading activity across platforms
Western Conference Champion?
KalshiParis Saint-Germain FC vs. Arsenal FC
PolymarketWorld Cup Winner
PolymarketUEFA Champions League Winner
PolymarketChampions League Winner: PSG vs Arsenal
KalshiGame 7: San Antonio at Oklahoma City: Spread
KalshiReg Time: PSG vs Arsenal
KalshiFaria vs Tiafoe
KalshiGame 7: San Antonio at Oklahoma City: Total Points
KalshiBerrettini vs Comesana
KalshiArnaldi vs Collignon
KalshiPhiladelphia vs Los Angeles D
KalshiNew York Y vs A's
KalshiCerundolo vs Landaluce
KalshiPro Basketball Champion?
KalshiAtlanta vs Cincinnati
KalshiAuger-Aliassime vs Nakashima
KalshiLoL: Bilibili Gaming vs Team WE (BO5) - LPL Playoffs
PolymarketParry vs Anisimova
KalshiCharles Schwab Challenge Winner
KalshiMboko vs Keys
KalshiKouame vs Tabilo
KalshiDemocratic Presidential Nominee 2028
PolymarketLos Angeles A vs Tampa Bay
KalshiGauff vs Potapova
KalshiToronto vs Baltimore
Kalshi2026 NBA Champion
PolymarketCerundolo vs Svajda
KalshiLos Angeles vs Connecticut
KalshiKansas City vs Texas
KalshiSan Diego vs Washington
KalshiLoL: Anyone's Legend vs EDward Gaming (BO5) - LPL Playoffs
PolymarketBitcoin above ___ on May 30?
PolymarketChicago C vs St. Louis
KalshiPresidential Election Winner 2028
PolymarketDetroit vs Chicago WS
KalshiMinnesota vs Pittsburgh
KalshiKalinskaya vs Osorio
KalshiIran ceasefire continues through...?
PolymarketParis Saint-Germain FC vs. Arsenal FC - More Markets
PolymarketDota 2: Aurora vs Tundra Esports (BO3) - BLAST Slam Last Chance Qualifier
PolymarketGuo vs Ren
KalshiUS x Iran permanent peace deal by...?
PolymarketSatoshi's identity be proven by...?
PolymarketBoston vs Cleveland
KalshiWhat price will Bitcoin hit in May?
PolymarketSan Francisco vs Colorado
KalshiLoL: FlyQuest vs Sentinels (BO5) - LCS Playoffs
PolymarketMicroStrategy sells any Bitcoin by ___ ?
PolymarketWhere will David Njoku play in 2026-27?
PolymarketRepublican Presidential Nominee 2028
PolymarketFed Decision in June?
PolymarketCounter-Strike: NIP vs FaZe (BO3) - Stake Ranked Episode 2 Playoffs
PolymarketParis Saint-Germain vs. Arsenal 2026
Polymarket USIran leader end of 2026?
PolymarketLos Angeles Mayoral Election winner?
KalshiLargest Company end of June?
PolymarketElon Musk # tweets May 22 - May 29, 2026?
PolymarketWhat will WTI Crude Oil (WTI) hit in May 2026?
PolymarketMen's French Open Winner
Kalshi2026 Men's French Open Winner
PolymarketParis Saint-Germain FC vs. Arsenal FC - Exact Score
PolymarketUS announces new Iran agreement/ceasefire extension by...?
PolymarketPhiladelphia Phillies vs. Los Angeles Dodgers
Polymarket USBrazil Presidential Election
PolymarketLoL: KT Rolster vs DN SOOPers (BO3) - LCK Rounds 1-2
PolymarketElon Musk # tweets May 26 - June 2, 2026?
PolymarketNext French Presidential Election
PolymarketAtlanta Braves vs. Cincinnati Reds
Polymarket USIEM Cologne Major 2026 Winner
PolymarketCanadiens vs. Hurricanes
PolymarketUS x Cuba diplomatic meeting by...?
PolymarketColombia Presidential Election
PolymarketToronto Blue Jays vs. Baltimore Orioles
Polymarket USFelix Auger-Aliassime vs. Brandon Nakashima
Polymarket USMatteo Arnaldi vs. Raphael Collignon
Polymarket USCalifornia Governor Election Winner
PolymarketRosenborg BK vs. FK Bodø/Glimt
PolymarketWho will win in the upcoming basketball event Los Angeles vs Connecticut scheduled for 2026-05-30 22:00:00+00?
Polymarket USWhat price will Bitcoin hit on May 29?
PolymarketIPL Champion
KalshiF1 Drivers' Champion
PolymarketNew York Yankees vs. Athletics
Polymarket USChicago Cubs vs. St. Louis Cardinals
Polymarket USParis Saint-Germain vs. Arsenal 2026
Polymarket USSan Diego Padres vs. Washington Nationals
Polymarket2026 Men's World Cup winner?
KalshiKansas City Royals vs. Texas Rangers
Polymarket USJaime Faria vs. Frances Tiafoe
Polymarket USBosnia and Herzegovina vs. North Macedonia
PolymarketParis Saint-Germain vs. Arsenal 2026 - Draw
Polymarket USNBA Playoffs: Western Conference Champion
PolymarketWho will be the next Prime Minister of Israel after the next election?
PolymarketNFL Champion 2027
PolymarketReal Sociedad de Fútbol B vs. Cultural y Deportiva Leonesa
PolymarketQingdao Xihaian FC vs. Shanghai Shenhua FC
PolymarketElon Musk musk # tweets in May 2026?
PolymarketMinnesota Lynx vs. Chicago Sky
PolymarketUFC Fight Night: Song Yadong vs. Deiveson Figueiredo (Bantamweight, Main Card)
PolymarketDota 2: Team Spirit vs OG (BO3) - BLAST Slam Last Chance Qualifier
PolymarketLoL: Karmine Corp vs Natus Vincere (BO5) - LEC Playoffs
PolymarketLos Angeles Angels vs. Tampa Bay Rays
Polymarket USLoL: BNK FEARX vs T1 (BO3) - LCK Rounds 1-2
PolymarketLoL: GAM Esports vs Deep Cross Gaming (BO5) - LCP Playoffs
PolymarketAtlanta Braves vs. Cincinnati Reds
PolymarketElon Musk # tweets May 28 - May 30, 2026?
PolymarketWhat price will Bitcoin hit on May 30?
PolymarketChongqing Tonglianglong FC vs. Beijing Guoan FC
PolymarketElon Musk # tweets May 29 - June 5, 2026?
PolymarketStrait of Hormuz traffic returns to normal by June 15?
PolymarketWho will win in the upcoming tennis event Tianhui Zhang vs Yan Cheng Chen scheduled for May 31, 2026 at 2:00 AM UTC?
Polymarket USSan Antonio vs. Oklahoma City: O/U 213.5
Polymarket USWho will win in the upcoming basketball event Indiana vs Portland scheduled for 2026-05-31 00:00:00+00?
Polymarket USSpread: San Antonio (-3.5)
Polymarket USSan Antonio vs. Oklahoma City: O/U 204.5
Polymarket USNRG vs. Leviatán Esports
KalshiSpread: San Antonio (+2.5)
Polymarket USLIV Golf Korea Champion?
KalshiDemocratic Presidential nominee in 2028?
KalshiBTC price on May 31, 2026 at 5pm EDT?
KalshiLos Angeles A vs Tampa Bay
KalshiSan Antonio vs. Oklahoma City: O/U 216.5
Polymarket USWhen will traffic at the Strait of Hormuz return to normal?
KalshiFinals MVP Winner?
KalshiSan Antonio vs. Oklahoma City: O/U 210.5
Polymarket USSong Yadong vs. Deiveson Figueiredo
Polymarket USSpread: San Antonio (-6.5)
Polymarket USCharles Schwab Challenge: Top 20 Finishers
KalshiDetroit Tigers vs. Chicago White Sox
Polymarket USSpread: San Antonio (+5.5)
Polymarket USNBA Western Conference Champion: San Antonio
Polymarket USKostyuk vs Swiatek
KalshiMichael Mmoh vs. Justin Boulais
Polymarket USMensik vs Rublev
KalshiSan Diego Padres vs. Washington Nationals
Polymarket USAndre Ilagan vs. Aidan Mayo
Polymarket USWhat will Trump say during Fox News: My View with Lara Trump?
KalshiVictoria Mboko vs. Madison Keys
Polymarket USFed decision in Jun 2026?
KalshiUS gas prices this week
KalshiWhat will the announcers say during Spurs vs Thunder Professional Basketball Game
KalshiWomen's French Open Winner
KalshiAtlanta vs Cincinnati
KalshiStanley Cup® Champion?
KalshiHow many launches will SpaceX have in May?
KalshiSvitolina vs Bencic
Kalshi2026 NBA Champion: San Antonio
Polymarket USBTC price on Jun 5, 2026 at 5pm EDT?
KalshiGame 1: New York at San Antonio
KalshiWho will be the next governor of California?
KalshiWho will be on the cover of Madden NFL 27?
KalshiRuud vs Fonseca
Kalshi2026 NBA Champion: New York
Polymarket USCharles Schwab Challenge Winner: J.J. Spaun
Polymarket USCharles Schwab Challenge Winner: Mac Meissner
Polymarket USCharles Schwab Challenge Winner: Eric Cole
Polymarket USCharles Schwab Challenge Winner: Russell Henley
Polymarket USCharles Schwab Challenge Winner: Ryan Gerard
Polymarket US2026 NBA Champion: Oklahoma City
Polymarket USPolymarket Open Winner: Big John
Polymarket USNHL Stanley Cup Champion: Carolina Hurricanes
Polymarket USPolymarket Open Winner: Cheddy
Polymarket USCasper Ruud vs. Joao Fonseca
Polymarket USNBA Finals MVP: Jalen Brunson
Polymarket USCharles Schwab Challenge Winner: Alex Smalley
Polymarket USCharles Schwab Challenge Winner: Hideki Matsuyama
Polymarket USAtlanta Braves vs. Cincinnati Reds
Polymarket USSan Diego Padres vs. Washington Nationals
Polymarket USNBA Western Conference Champion: Oklahoma City
Polymarket USHighest temperature in NYC on May 31?: 72 to 73
Polymarket USNBA Finals MVP: Victor Wembanyama
Polymarket USCharles Schwab Challenge Winner: Akshay Bhatia
Polymarket USWho will win in the upcoming basketball event Las Vegas vs Golden State scheduled for 2026-05-31 19:30:00+00?
Polymarket USCharles Schwab Challenge Winner: Michael Brennan
Polymarket USMinnesota Twins vs. Pittsburgh Pirates
Polymarket USFlavio Cobolli vs. Zachary Svajda
Polymarket USBelal Muhammad vs. Gabriel Bonfim
Polymarket USHighest temperature in NYC on May 31?: 74 to 75
Polymarket USWill Mexico win against South Africa in the FIFA World Cup match scheduled for Jun 11, 2026?
Polymarket USNew York Yankees vs. Athletics
Polymarket USWorld Cup Winner
PolymarketParis Saint-Germain FC vs. Arsenal FC
PolymarketIran ceasefire continues through...?
PolymarketDemocratic Presidential Nominee 2028
PolymarketPresidential Election Winner 2028
PolymarketUEFA Champions League Winner
PolymarketPro Basketball Champion?
KalshiUS x Iran permanent peace deal by...?
PolymarketFed Decision in June?
PolymarketWhat price will Bitcoin hit in May?
PolymarketRepublican Presidential Nominee 2028
PolymarketCharles Schwab Challenge Winner
KalshiF1 Drivers' Champion
PolymarketWest Ham United FC vs. Leeds United FC
PolymarketUS announces new Iran agreement/ceasefire extension by...?
PolymarketSpurs vs. Thunder
PolymarketWhat will WTI Crude Oil (WTI) hit in May 2026?
Polymarket2026 NBA Champion
PolymarketNext French Presidential Election
PolymarketBrazil Presidential Election
PolymarketLos Angeles Mayoral Election winner?
KalshiMicroStrategy sells any Bitcoin by ___ ?
PolymarketThunder vs. Spurs
Polymarket2026 Men's French Open Winner
PolymarketMen's French Open Winner
KalshiThunder vs. Spurs
PolymarketCounter-Strike: Team Falcons vs Legacy (BO5) - CS Asia Championships Playoffs
PolymarketCalifornia Governor Election Winner
PolymarketElon Musk # tweets May 22 - May 29, 2026?
PolymarketIEM Cologne Major 2026 Winner
PolymarketGlory in Giza: Oleksandr Usyk vs. Rico Verhoeven
PolymarketBitcoin above ___ on May 26?
PolymarketLoL: Bilibili Gaming vs Team WE (BO5) - LPL Playoffs
PolymarketLargest Company end of June?
PolymarketStrait of Hormuz traffic returns to normal by end of June?
PolymarketElon Musk # tweets May 26 - June 2, 2026?
PolymarketColombia Presidential Election
PolymarketLoL: Team WE vs LNG Esports (BO5) - LPL Play-In
PolymarketBitcoin above ___ on May 27?
PolymarketBitcoin above ___ on May 28?
PolymarketLoL: KT Rolster vs T1 (BO3) - LCK Rounds 1-2
PolymarketManchester City FC vs. Aston Villa FC
PolymarketWill Reza Pahlavi lead Iran in 2026?
PolymarketBitcoin above ___ on May 30?
PolymarketBrighton & Hove Albion FC vs. Manchester United FC
PolymarketLiverpool FC vs. Brentford FC
PolymarketIPL Champion
KalshiWill the Iranian regime fall by June 30?
PolymarketBitcoin above ___ on May 29?
PolymarketIran leader end of 2026?
PolymarketHellas Verona FC vs. AS Roma
PolymarketWill Crude Oil (CL) hit__ by end of June?
PolymarketWhere will David Njoku play in 2026-27?
PolymarketCounter-Strike: Team Falcons vs MOUZ (BO3) - CS Asia Championships Playoffs
PolymarketSunderland AFC vs. Chelsea FC
PolymarketLoL: JD Gaming vs ThunderTalk Gaming (BO5) - LPL Playoffs
PolymarketSatoshi's identity be proven by...?
PolymarketLoL: BNK FEARX vs Kiwoom DRX (BO3) - LCK Rounds 1-2
PolymarketLoL: LYON vs Team Liquid (BO5) - LCS Playoffs
PolymarketStrait of Hormuz traffic returns to normal by June 15?
PolymarketWhat price will Ethereum hit in May?
PolymarketMLB World Series Champion 2026
PolymarketDota 2: Team Falcons vs PlayTime (BO3) - DreamLeague Playoffs
PolymarketParis Saint-Germain FC vs. Arsenal FC - More Markets
PolymarketLoL: Anyone's Legend vs EDward Gaming (BO5) - LPL Playoffs
PolymarketStanley Cup® Champion?
Kalshi2026 Men's World Cup winner?
KalshiWhen will traffic at the Strait of Hormuz return to normal?
KalshiLa Liga Relegation
KalshiTexas Republican Senate Runoff: Margin of Victory
KalshiFed decision in Jun 2026?
KalshiDemocratic Presidential nominee in 2028?
KalshiNew US-Iran nuclear deal in 2026?
KalshiWho will be the next governor of California?
KalshiCharles Schwab Challenge: Top 20 Finishers
KalshiWho will win the Senate race in Texas?
KalshiCasper Ruud vs. Roman Safiullin
Polymarket USWill the U.S. confirm that aliens exist before 2027?
KalshiTHE CJ CUP Byron Nelson Champion: S.W. Kim
Polymarket USTHE CJ CUP Byron Nelson Champion: W. Clark
Polymarket USMargin of victory in the KY-04 Republican primary?
KalshiTaylor Fritz vs. Nishesh Basavareddy
Polymarket USLIV Golf Korea Champion?
KalshiUS gas prices this week
KalshiWomen's French Open Winner
KalshiChampions League Winner: Paris Saint-Germain
Polymarket USPittsburgh Pirates vs. Toronto Blue Jays
Polymarket USSan Antonio vs. Oklahoma City
Polymarket USNext US Presidential Election Winner?
Kalshi2026 NBA Champion: New York
Polymarket USHow many launches will SpaceX have in May?
KalshiPro Baseball Champion
KalshiFrancisco Cerundolo vs. Botic van de Zandschulp
Polymarket USCollege Baseball D1 Champion
KalshiJoao Fonseca vs. Dino Prizmic
Polymarket USParis Saint-Germain vs. Arsenal 2026
Polymarket USTampa Bay Rays vs. Baltimore Orioles
Polymarket USRepublican nominee for President in 2028?
KalshiFinals MVP Winner?
KalshiSeattle Mariners vs. Athletics
Polymarket USNBA Western Conference Champion: San Antonio
Polymarket USMirra Andreeva vs. Marina Bassols Ribera
Polymarket USWho will win in the upcoming esports event JD Gaming vs ThunderTalk Gaming scheduled for 2026-05-29 06:00:00+00?
Polymarket USIceman: First Week Album Equivalent Units
Kalshi"Backrooms" Rotten Tomatoes score?
Kalshi2026 NBA Champion: San Antonio
Polymarket USFelix Auger-Aliassime vs. Daniel Altmaier
Polymarket USCharles Schwab Challenge: Top 10 Finishers
KalshiWho will advance from California's top-two primary for Governor? (Candidates)
KalshiHow low will Bitcoin get in May?
KalshiNew York vs. Cleveland
Polymarket USSan Antonio vs. Oklahoma City
Polymarket USCleveland Guardians vs. Philadelphia Phillies
Polymarket USMiami Marlins vs. Toronto Blue Jays
Polymarket USOklahoma City vs. San Antonio
Polymarket USWashington Nationals vs. Cleveland Guardians
Polymarket USCharles Schwab Challenge First Round Leader: Tom Kim
Polymarket US2026 NBA Champion: Oklahoma City
Polymarket USWho will win in the upcoming esports event Anyone's Legend vs EDward Gaming scheduled for 2026-05-30 06:00:00+00?
Polymarket USDetroit Tigers vs. Baltimore Orioles
Polymarket USLos Angeles Dodgers vs. Milwaukee Brewers
Polymarket USNew York Mets vs. Miami Marlins
Polymarket USTHE CJ CUP Byron Nelson Champion: S. Scheffler
Polymarket USChicago Cubs vs. Pittsburgh Pirates
Polymarket USTampa Bay Rays vs. New York Yankees
Polymarket USU.S Senate Midterm Winner: Republican Party
Polymarket USOklahoma City vs. San Antonio
Polymarket USNBA Western Conference Champion: Oklahoma City
Polymarket USCharles Schwab Challenge Winner: J.J. Spaun
Polymarket USU.S House Midterm Winner: Democratic Party
Polymarket USCharles Schwab Challenge Winner: Russell Henley
Polymarket USEPL Relegation
KalshiNHL Stanley Cup Champion: Carolina Hurricanes
Polymarket USTop AI model this week?
KalshiNHL Stanley Cup Champion: Vegas Golden Knights
Polymarket USU.S House Midterm Winner: Republican Party
Polymarket USPolymarket Open Winner: Big John
Polymarket USCharles Schwab Challenge Winner: Ludvig Aberg
Polymarket USCharles Schwab Challenge Winner: Ryan Gerard
Polymarket USCharles Schwab Challenge Winner: Mac Meissner
Polymarket USCharles Schwab Challenge Winner: Alex Smalley
Polymarket USCharles Schwab Challenge Winner: Hideki Matsuyama
Polymarket USCharles Schwab Challenge Winner: Eric Cole
Polymarket USTrump's approval rating on May 29, 2026?
KalshiTexas Republican Senate runoff: who endorses who?
KalshiWill Trump be photographed every day this week? (5/18-5/24)
KalshiCharles Schwab Challenge Winner: Akshay Bhatia
Polymarket USCharles Schwab Challenge Winner: Jordan L. Smith
Polymarket USCharles Schwab Challenge Winner: Gary Woodland
Polymarket USCharles Schwab Challenge Winner: Michael Thorbjornsen
Polymarket USNBA Finals MVP: Shai Gilgeous-Alexander
Polymarket USChunichi Dragons vs Hanshin Tigers
KalshiNBA Finals MVP: Jalen Brunson
Polymarket USU.S Senate Midterm Winner: Democratic Party
Polymarket USIceman: First Week Pure Album Sales?
KalshiCharles Schwab Challenge Winner: Justin Thomas
Polymarket USCharles Schwab Challenge Winner: Brian Harman
Polymarket USAmerican League Rookie of the Year: Kevin McGonigle
Polymarket USPolymarket Open Winner: Cheddy
Polymarket USCombo
KalshiTrump late night post this week? (5/24-5/30)
KalshiCombo
KalshiSunrisers Hyderabad vs Royal Challengers Bengaluru
KalshiEPL Top 6 Finishers
KalshiSunrisers Hyderabad vs Royal Challengers Bengaluru
KalshiCombo
KalshiLucknow Super Giants vs Punjab Kings
KalshiSeattle vs A's
KalshiHapoel Holon BC vs Maccabi Ironi Ramat Gan
KalshiCombo
KalshiCombo
KalshiCombo
KalshiCombo
KalshiCombo
KalshiPolice Sports Club vs Ace Capital CC
KalshiTop Coding AI this week
KalshiGujarat Titans vs Chennai Super Kings
KalshiMumbai Indians vs Rajasthan Royals
KalshiCombo
KalshiCombo
KalshiWorld Cup Winner
PolymarketDemocratic Presidential Nominee 2028
PolymarketRepublican Presidential Nominee 2028
PolymarketWhat will Trump say during bilateral events with Xi Jinping?
PolymarketPresidential Election Winner 2028
PolymarketNext Prime Minister of Hungary
PolymarketPro Basketball Champion?
KalshiParis Saint-Germain FC vs. Arsenal FC
PolymarketWhat price will Bitcoin hit in May?
PolymarketFed Decision in June?
PolymarketWill the Iranian regime fall by April 30?
PolymarketStrait of Hormuz traffic returns to normal by end of April?
PolymarketNext French Presidential Election
PolymarketBrazil Presidential Election
PolymarketIran ceasefire continues through...?
PolymarketF1 Drivers' Champion
PolymarketQatarEnergy announces/resumes LNG production in Qatar by April 30?
PolymarketTamil Nadu Legislative Assembly Election Winner
PolymarketUS x Iran permanent peace deal by...?
PolymarketStrait of Hormuz traffic returns to normal by May 15?
PolymarketCavaliers vs. Knicks
PolymarketUEFA Champions League Winner
PolymarketTrump out as President by April 30?
Polymarket2026 NBA Champion
PolymarketSpurs vs. Thunder
PolymarketWill Trump visit China by...?
PolymarketUFC 328: Sean Strickland vs. Khamzat Chimaev (Middleweight, Main Card)
PolymarketWill the U.S. invade Iran before 2027?
PolymarketCalifornia Governor Election Winner
PolymarketHantavirus pandemic in 2026?
PolymarketMicroStrategy sells any Bitcoin by ___ ?
PolymarketAFC Bournemouth vs. Manchester City FC
PolymarketFC Barcelona vs. Real Madrid CF
PolymarketLos Angeles Mayoral Election winner?
KalshiWill the Iranian regime fall by June 30?
PolymarketLakers vs. Thunder
Polymarket2026 Seoul Mayoral Election Winner
PolymarketStrait of Hormuz traffic returns to normal by end of June?
PolymarketWill Reza Pahlavi lead Iran in 2026?
PolymarketChelsea FC vs. Nottingham Forest FC
PolymarketMLB World Series Champion 2026
PolymarketLargest Company end of June?
Polymarket76ers vs. Celtics
PolymarketRaptors vs. Cavaliers
PolymarketKnicks vs. 76ers
PolymarketWhat will WTI Crude Oil (WTI) hit in May 2026?
PolymarketHow many Fed rate cuts in 2026?
PolymarketFC Bayern München vs. Paris Saint-Germain FC
PolymarketSpurs vs. Timberwolves
PolymarketManchester United FC vs. Liverpool FC
PolymarketArsenal FC vs. Club Atlético de Madrid
PolymarketWill the US confirm that aliens exist by...?
PolymarketWest Ham United FC vs. Arsenal FC
PolymarketU.S. anti-cartel operation outside of the U.S. by...?
PolymarketCharles Schwab Challenge Winner
KalshiElon Musk # tweets May 15 - May 22, 2026?
PolymarketTimberwolves vs. Spurs
PolymarketWill Crude Oil (CL) hit__ by end of June?
PolymarketF1 Constructors' Champion
PolymarketWho will be the next Prime Minister of Israel after the next election?
PolymarketUS announces new Iran agreement/ceasefire extension by...?
PolymarketColombia Presidential Election
Polymarket2026 Men's French Open Winner
PolymarketStanley Cup® Champion?
KalshiMen's French Open Winner
KalshiDemocratic Presidential nominee in 2028?
KalshiWhen will traffic at the Strait of Hormuz return to normal?
Kalshi2026 Men's World Cup winner?
KalshiIPL Champion
KalshiWill the U.S. confirm that aliens exist before 2027?
KalshiWho will be the next governor of California?
KalshiSan Antonio vs. Oklahoma City
Polymarket USFed decision in Jun 2026?
KalshiPhiladelphia vs. Boston
Polymarket USSan Antonio vs. Minnesota
Polymarket USNext US Presidential Election Winner?
KalshiNew US-Iran nuclear deal in 2026?
KalshiWhich party will win the U.S. House in 2026?
KalshiTHE CJ CUP Byron Nelson Champion: S.W. Kim
Polymarket USRepublican nominee for President in 2028?
KalshiPro Baseball Champion
KalshiMargin of victory in the KY-04 Republican primary?
KalshiToronto vs. Cleveland
Polymarket USTexas Republican Senate Runoff: Margin of Victory
KalshiWhen will SpaceX officially announce an IPO?
KalshiWho will win in the upcoming cricket event Kolkata Knight Riders vs Mumbai Indians scheduled for 2026-05-20 14:00:00+00?
Polymarket USLa Liga Relegation
KalshiTHE CJ CUP Byron Nelson Champion: S. Scheffler
Polymarket USWho will win the Senate race in Texas?
KalshiTulsi Gabbard out as director of national intelligence?
Kalshi2027 Pro Football Champion
KalshiRound 2: New York vs Philadelphia
Polymarket US2026 Midterms: Balance of Power in Congress?
KalshiWho will win in the upcoming cricket event Sunrisers Hyderabad vs Royal Challengers Bengaluru scheduled for 2026-05-22 14:00:00+00?
Polymarket USWill Trump be photographed every day this week? (4/26-5/2)
KalshiWho will win in the upcoming cricket event Rajasthan Royals vs Lucknow Super Giants scheduled for 2026-05-19 14:00:00+00?
Polymarket USHow many launches will SpaceX have in May?
KalshiEmma Navarro vs. Iva Jovic
Polymarket USTHE CJ CUP Byron Nelson Champion: W. Clark
Polymarket USHow high will Bitcoin get in May?
KalshiWho will have a #1 song on Spotify USA in April?
KalshiCollege Baseball D1 Champion
KalshiHow many Gold Cards will Trump issue before May?
KalshiFinals MVP Winner?
KalshiDetroit vs. Cleveland
Polymarket USCharles Schwab Challenge: Top 20 Finishers
KalshiOhio Republican Governor primary: Vivek Ramaswamy vote percent
KalshiWho will win in the upcoming basketball event Minnesota vs Chicago scheduled for 2026-05-23 17:00:00+00?
Polymarket USNew York Mets vs. Washington Nationals
Polymarket USMontreal Canadiens vs. Buffalo Sabres
Polymarket USCasper Ruud vs. Roman Safiullin
Polymarket USPhiladelphia Phillies vs. Miami Marlins
Polymarket USCleveland vs. Toronto
Polymarket USMontreal Canadiens vs. Carolina Hurricanes
Polymarket US2026 NBA Champion: New York
Polymarket USWhat will Trump say this week?
KalshiMike Tyson vs Floyd Mayweather
KalshiRound 2: Los Angeles L vs Oklahoma City
Polymarket USOklahoma City vs. Los Angeles L
Polymarket USWho will win in the upcoming cricket event Chennai Super Kings vs Sunrisers Hyderabad scheduled for 2026-05-18 14:00:00+00?
Polymarket USTaylor Fritz vs. Nishesh Basavareddy
Polymarket USMarie Bouzkova vs. Katerina Siniakova
Polymarket USCleveland vs. Detroit
Polymarket USChampions League Winner: Paris Saint-Germain
Polymarket USPGA Championship Champion: Aaron Rai
Polymarket USIceman: First Week Album Equivalent Units
KalshiLos Angeles Dodgers vs. San Diego Padres
Polymarket USPittsburgh Pirates vs. Toronto Blue Jays
Polymarket USU.S Senate Midterm Winner: Republican Party
Polymarket USNBA Western Conference Champion: San Antonio
Polymarket USWhat will Trump say this week?
KalshiHow many times will Trump visit Mar-a-Lago in Apr 2026?
KalshiEPL Relegation
KalshiWhat will Trump say this week?
KalshiWhat will Trump say this week?
KalshiU.S House Midterm Winner: Democratic Party
Polymarket USICEMAN by Drake: Most streamed song by May 22, 2026?
KalshiU.S Senate Midterm Winner: Democratic Party
Polymarket US2026 NBA Champion: San Antonio
Polymarket US2026 NBA Champion: Oklahoma City
Polymarket USInd. Medellin vs Flamengo
KalshiNBA Western Conference Champion: Oklahoma City
Polymarket USWhat will Trump say this month?
KalshiUCL Final Qualifiers
KalshiWill Trump be photographed every day this week? (5/10-5/16)
KalshiWhich DHS components will receive more funding before May?
KalshiTexas Republican Senate runoff: who endorses who?
KalshiWho will have a #1 song on Spotify Global in April?
KalshiCharles Schwab Challenge Winner: J.J. Spaun
Polymarket USCharles Schwab Challenge Winner: Russell Henley
Polymarket USTop AI model this week
KalshiWill Trump be photographed every day this week? (5/3-5/9)
KalshiNHL Stanley Cup Champion: Carolina Hurricanes
Polymarket USHow many Executive Orders will Trump sign this week? (5/3 - 5/9)
KalshiWill Mike Tyson and Floyd Mayweather fight before May?
KalshiWhich Senators will vote to advance the SAVE America Act?
KalshiU.S House Midterm Winner: Republican Party
Polymarket USNHL Stanley Cup Champion: Vegas Golden Knights
Polymarket USTop AI model this week?
KalshiTrump's approval rating on May 22, 2026?
KalshiPolymarket Open Winner: Big John
Polymarket USCharles Schwab Challenge Winner: Ludvig Aberg
Polymarket USCharles Schwab Challenge Winner: Ryan Gerard
Polymarket USCharles Schwab Challenge Winner: Mac Meissner
Polymarket USTrump's approval rating on May 15, 2026?
KalshiCharles Schwab Challenge Winner: Alex Smalley
Polymarket USCharles Schwab Challenge Winner: Hideki Matsuyama
Polymarket USTrump's approval rating on May 1, 2026?
KalshiNBA Finals MVP: Shai Gilgeous-Alexander
Polymarket USCharles Schwab Challenge Winner: Eric Cole
Polymarket USTrump's approval rating on May 29, 2026?
KalshiHow we collect data
DeFi Rate pulls prediction market data directly from platform APIs on a rolling basis. Kalshi data is sourced from the Kalshi REST API, which provides market-level contract data including volume, open interest, resolution status, and native category classifications. Polymarket data is sourced from the Polymarket GraphQL API, which exposes market-level trading activity, liquidity, and outcome probabilities across its decentralized order book. We also support ForecastX, Gemini and Polymarket US, though the data provided is limited in scope compared to Kalshi and Polymarket (international)
Data is fetched at 30-minute intervals, cleaned and stored on our end. All figures reflect each platform’s public API at the time of the most recent refresh.
Volume methodology
All volume figures are calculated on a rolling window basis, not calendar periods. A 24-hour rolling window captures all trades recorded in the 24 hours preceding each data pull. A 7-day window covers the trailing 7 days; a 30-day window covers the trailing 30 days. Figures update continuously and will differ from calendar-period totals (e.g., “volume this month”) published elsewhere.
Volume is denominated in USD. Kalshi reports native USD figures. Polymarket volume is denominated in USDC and converted to USD at a 1:1 rate, consistent with USDC’s peg.
Category taxonomy
Kalshi categories reflect the platform’s native classification system as returned by the Kalshi API. Polymarket does not enforce a rigid native taxonomy; categories displayed for Polymarket markets are assigned by DeFi Rate using a standardized classification schema mapped against market title and tag data. The schema assigns each market to one of the following categories: Politics, Sports, Crypto, Economics, Finance, Tech, Culture, Weather, Misc, and World. Markets carrying Polymarket’s native “mentions” tag are classified separately as Mentions. Category assignments are reviewed periodically and updated when platform tagging changes.
Leading outcome
The Leading column in the Top Markets table displays the current frontrunner for each market. For binary markets, this is the outcome trading above 50% implied probability. For multi-outcome markets, it is the outcome with the highest current implied probability. The probability figure shown reflects the last traded price for that contract. “Outcome” in place of a probability indicates the market has resolved and the displayed entry is the confirmed result.
Status definitions
Active markets are open for trading at the time of the data pull. Closed markets have passed their end date or been resolved by the platform. DeFi Rate does not distinguish between platform-level “expired” and “settled” statuses in the display layer; both appear as Closed.
Polymarket US top 30 markets
The Polymarket US Top 30 tab filters to markets accessible to US-based traders under Polymarket’s geofenced access rules. Polymarket restricts certain political and financial markets from US IP addresses; this view reflects the subset of the Polymarket top 30 reachable from a US connection at the time of the data pull. Availability is determined by Polymarket’s own access-control layer and may change without notice.
Change percentage
The change figure displayed alongside each volume metric is the percentage difference between the current rolling window and the equivalent prior period. For a 30-day reading, the comparison window is days 31–60 immediately preceding the current window. A positive value indicates higher volume in the most recent window; a negative value indicates lower volume. Change figures apply at the platform level, category level, and individual market level depending on context.
Market count figure
The Markets figure in the Category Breakdown table reflects the total number of discrete contracts within each category, not the number of parent events. On Kalshi, a single event (e.g., “NBA Champion 2026”) may contain multiple contracts — one per team — and each is counted separately. On Polymarket, each market URL corresponds to a single binary outcome and is counted as one market. Kalshi market counts are therefore not directly comparable to Polymarket market counts at the category level, though this is often used in the media.
Open interest
Open interest reflects the total value of unsettled contracts currently held by traders on a given market. It is pulled directly from each platform’s API and represents outstanding exposure at the time of the data pull, not cumulative traded volume. A dash (—) in the Open Int. column indicates the field was not returned in the API response for that market.
