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Category Breakdown
Compare volume and activity across platforms by category
Kalshi Categories
| Category | Markets | Volume | Change |
|---|---|---|---|
| Politics | 19,230 | $2.4M | -30.2% |
| Sports | 1,291,327 | $116.0M | -41% |
| Crypto | 5,331 | $35.0M | -22.2% |
| Economics | 3,248 | $1.3M | -2.3% |
| Finance | 1,460 | $794.6K | +9.7% |
| Tech | 535 | $96.5K | -11.7% |
| Culture | 11,419 | $3.5M | -0.5% |
| Weather | 1,260 | $1.0M | -2.1% |
| Misc | 1,353 | $62.7K | -78.6% |
| World | 20,972 | $850.7K | -10.4% |
Polymarket Categories
| Category | Markets | Volume | Change |
|---|---|---|---|
| Politics | 30 | $669.0K | +0.7% |
| Sports | 59 | $11.7M | +2.8% |
| Crypto | 2 | $41.1K | -10.4% |
| Culture | 9 | $72.2K | -41.9% |
Kalshi Categories
| Category | Markets | Volume | Change |
|---|---|---|---|
| Politics | 13,059 | $21.5M | +12.3% |
| Sports | 1,041,606 | $1.5B | -3.9% |
| Crypto | 14,938 | $287.0M | +16.5% |
| Economics | 3,016 | $8.5M | -8.9% |
| Finance | 3,289 | $3.8M | +33% |
| Tech | 348 | $716.2K | +1.6% |
| Culture | 5,918 | $12.0M | +101.3% |
| Weather | 6,511 | $7.7M | -9.6% |
| Misc | 977 | $384.3K | -82% |
| World | 30,445 | $8.7M | -46% |
Polymarket Categories
| Category | Markets | Volume | Change |
|---|---|---|---|
| Politics | 3,686 | $153.7M | -17% |
| Sports | 7,439 | $267.5M | +18% |
| Crypto | 1,529 | $33.6M | -29.5% |
| Economics | 406 | $14.0M | -61.3% |
| Finance | 761 | $6.8M | -2.8% |
| Tech | 512 | $3.6M | -25.3% |
| Culture | 794 | $34.3M | +23.7% |
| Weather | 112 | $278.9K | +29.9% |
| Misc | 17,090 | $182.9M | -11% |
| Mentions | 13 | $23.5K | -67.5% |
Kalshi Categories
| Category | Markets | Volume | Change |
|---|---|---|---|
| Politics | 44,974 | $89.3M | -24.9% |
| Sports | 4,528,879 | $6.4B | +1.6% |
| Crypto | 78,705 | $1.0B | -0.8% |
| Economics | 9,392 | $41.2M | -43.3% |
| Finance | 19,737 | $14.1M | -10.4% |
| Tech | 830 | $4.1M | +27.5% |
| Culture | 12,653 | $25.8M | +99.4% |
| Weather | 30,808 | $33.6M | +1.9% |
| Misc | 8,068 | $5.5M | +42.1% |
| World | 126,578 | $55.2M | -5.8% |
Polymarket Categories
| Category | Markets | Volume | Change |
|---|---|---|---|
| Politics | 5,704 | $908.8M | -57.4% |
| Sports | 32,365 | $1.5B | -66.8% |
| Crypto | 12,475 | $360.7M | -87.4% |
| Economics | 790 | $212.3M | -20.4% |
| Finance | 1,599 | $36.3M | -75.9% |
| Tech | 874 | $37.7M | -72.2% |
| Culture | 1,331 | $115.8M | -4.8% |
| Weather | 167 | $1.4M | -97.8% |
| Misc | 76,513 | $1.3B | -37.8% |
| Mentions | 20 | $186.1K | -91.8% |
Weekly volume analysis
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.
Kalshi Maintains $3B Weekly Volume, Polymarket Pulls Back Post-Masters
Weekly notional volume on the two largest prediction markets pulled back from the prior week’s Masters-fueled highs. Kalshi posted $3.06B for the week of April 13, down 13.6% WoW from the prior week’s record $3.54B. Polymarket had $2.04B in notional volume last week, down 17.5% from $2.48B, according to DeFi Rate’s prediction markets volume tracker. […]
Kalshi Notches Record $3.5B Volume, with $545 Million Coming in From Masters
The week of April 6–11 was the strongest yet for prediction markets, driven by The Masters and a combination of US election races and geopolitical events. Kalshi posted an all-time best $3.54B in notional volume (+21.8% week-over-week), while Polymarket surged to $2.48B (+25.5% WoW). The two industry leaders combined for $6.02B for the week, based […]
Kalshi Posts $13B Record Volume in March, Extends Lead Over Polymarket to $1B
Both platforms hit March records, then diverged: Kalshi rose 6.4% in the week of March 30 while Polymarket fell 12%, widening Kalshi’s notional volume lead to $932M.
Kalshi Hits $12B, Polymarket $10B All-Time Highs on March NCAA Tournament Surge
Kalshi posted $12.35B in March with two days to go for its biggest month ever while Polymarket crossed $10B in monthly volume for the first time. March Madness trading fueled the surge.
Top Markets by Volume
Highest trading activity across platforms
2026 FIFA World Cup Winner
PolymarketSinner vs Medvedev
KalshiLucknow Super Giants vs Chennai Super Kings
KalshiPGA Championship Winner
KalshiGame 6: Detroit at Cleveland
KalshiAston Villa vs Liverpool
KalshiPGA Championship End of Round 2 Leader
KalshiGame 6: Detroit at Cleveland: Total Points
KalshiRuud vs Darderi
KalshiDetroit vs. Cleveland
Polymarket USWho will win in the upcoming cricket event Lucknow Super Giants vs Chennai Super Kings scheduled for 2026-05-15 14:00:00+00?
Polymarket USGame 6: Detroit at Cleveland: Spread
KalshiBoyer vs Montes-de la Torre
KalshiBitcoin price on May 15, 2026 at 5pm EDT?
KalshiPrice vs Del Pino
KalshiFaria vs Nava
Kalshi2026 NBA Champion
PolymarketGame 6: San Antonio at Minnesota
KalshiCombo
KalshiWho will win in the upcoming cricket event Royal Challengers Bengaluru vs Kolkata Knight Riders scheduled for 2026-05-13 14:00:00+00?
Polymarket USPhiladelphia vs Pittsburgh
KalshiJusto vs Roncadelli
KalshiCoppejans vs Blanch
KalshiOsorio vs Krejcikova
KalshiTeam Falcons vs. FURIA
KalshiBitcoin price on May 15, 2026 at 10am EDT?
KalshiLiverpool at Aston Villa: Totals
KalshiWho will win in the upcoming basketball event New York vs Portland scheduled for 2026-05-15 02:00:00+00?
Polymarket USWho will win in the upcoming esports event FURIA vs Team Falcons scheduled for 2026-05-15 14:00:00+00?
Polymarket USCasper Ruud vs. Karen Khachanov
Polymarket USMolcan vs Griekspoor
KalshiBitcoin price on May 15, 2026 at 4pm EDT?
KalshiDemocratic Presidential Nominee 2028
PolymarketTabilo vs Lajovic
KalshiVitality vs. Natus Vincere
KalshiBitcoin price on May 15, 2026 at 3pm EDT?
KalshiBaltimore vs Washington
KalshiBoston vs Atlanta
KalshiVegas Golden Knights vs. Anaheim Ducks
Polymarket USNew York Y vs New York M
KalshiVallejo vs Bergs
KalshiCollignon vs Droguet
KalshiElina Svitolina vs. Elena Rybakina
Polymarket USBitcoin price on May 15, 2026 at 6pm EDT?
KalshiChoinski vs Fery
KalshiSan Francisco vs Los Angeles D
KalshiMiami vs Tampa Bay
KalshiHalys vs Mpetshi Perricard
KalshiGame 6: San Antonio at Minnesota: Spread
KalshiFouad vs Hrabavets
KalshiCombo
KalshiBitcoin price on May 15, 2026 at 2am EDT?
KalshiBitcoin price on May 15, 2026 at 12pm EDT?
KalshiRinderknech vs Damm Jr
KalshiWho will win in the upcoming basketball event Las Vegas vs Connecticut scheduled for 2026-05-15 23:30:00+00?
Polymarket USBitcoin price on May 15, 2026 at 2pm EDT?
KalshiCasper Ruud vs. Luciano Darderi
Polymarket USTampa Bay Rays vs. Toronto Blue Jays
Polymarket USPGA Championship: Top 20 Finishers
KalshiYastremska vs Bouzas Maneiro
KalshiPro Basketball Champion?
KalshiTristan Boyer vs. Inaki Montes
Polymarket USWho will win in the upcoming basketball event Washington vs Indiana scheduled for 2026-05-15 23:30:00+00?
Polymarket USWho will win in the upcoming esports event Natus Vincere vs Vitality scheduled for 2026-05-15 20:30:00+00?
Polymarket USToronto vs Detroit
KalshiWho will win in the upcoming esports event BetBoom Team vs paiN scheduled for 2026-05-13 20:30:00+00?
Polymarket USChicago C vs Chicago WS
KalshiWho will win in the upcoming esports event MOUZ vs Aurora Gaming scheduled for 2026-05-15 05:00:00+00?
Polymarket USSeries Winner: Minnesota (6) vs San Antonio (2)
KalshiSan Francisco Giants vs. Los Angeles Dodgers
Polymarket USWho will win in the upcoming basketball event Minnesota vs Dallas scheduled for 2026-05-15 00:00:00+00?
Polymarket USWhen will SpaceX officially announce an IPO?
KalshiGame 6
KalshiPGA Championship: Top 10 Finishers
KalshiDetroit vs. Cleveland: O/U 207.5
Polymarket USStanley Cup® Champion?
KalshiDetroit vs Cleveland: First Half Total
KalshiCombo
KalshiWho will win in the upcoming esports event 9z vs magic scheduled for 2026-05-15 11:00:00+00?
Polymarket USRaphael Collignon vs. Titouan Droguet
Polymarket USMilwaukee vs Minnesota
KalshiJaime Faria vs. Emilio Nava
Polymarket USToronto Blue Jays vs. Detroit Tigers
Polymarket USBaltimore vs Washington: Total Runs
KalshiBaltimore Orioles vs. Washington Nationals
Polymarket USGame 6
KalshiPhiladelphia vs Pittsburgh: Total Runs
KalshiChicago Cubs vs. Chicago White Sox
Polymarket US2026 NHL Stanley Cup Champion
PolymarketAston Villa vs. Liverpool 2026
Polymarket USCamila Osorio vs. Barbora Krejcikova
Polymarket USPhiladelphia Phillies vs. Boston Red Sox
Polymarket USJannik Sinner vs. Daniil Medvedev
Polymarket USPierre Delage vs. Roman Andres Burruchaga
Polymarket USDominika Salkova vs. Mayar Sherif
Polymarket USRound 2: Cleveland vs Detroit
Polymarket USWhat will happen before GTA VI?
PolymarketHighest temperature in Paris on May 14?
PolymarketXi Jinping out before 2027?
PolymarketGTA VI released before June 2026?
PolymarketSPY (SPY) Up or Down on May 14?
PolymarketHighest temperature in Miami on May 14?
PolymarketLoL: EKO Esports vs GMBLERS ESPORTS (BO5) - LIT Playoffs
PolymarketLoL: Team Heretics Academy vs UB Alma Mater (BO3) - LES Regular Season
PolymarketAl Ettifaq Saudi Club vs. Al Ittihad Saudi Club - More Markets
PolymarketMalcolm Wellmaker vs. Juan Diaz
Polymarket USAl Fateh Saudi Club vs. Al Najmah Saudi Club - More Markets
PolymarketPGA Championship Champion: Maverick McNealy
Polymarket USHighest temperature in Atlanta on May 14?
PolymarketRound 2: Minnesota vs San Antonio
Polymarket USColorado Rockies vs. Pittsburgh Pirates
PolymarketHighest temperature in Austin on May 14?
PolymarketSeattle Mariners vs. Houston Astros
PolymarketDota 2: Nigma Galaxy vs Tundra Esports (BO3) - DreamLeague Group B
PolymarketSan Diego Padres vs. Milwaukee Brewers
PolymarketCounter-Strike: HOTU vs Walczaki (BO3) - CCT Europe Series 1 Playoffs
PolymarketWashington Nationals vs. Cincinnati Reds
PolymarketAl Ettifaq Saudi Club vs. Al Ittihad Saudi Club
PolymarketHighest temperature in Toronto on May 14?
PolymarketDota 2: PARIVISION vs Xtreme Gaming (BO3) - DreamLeague Group B
PolymarketHighest temperature in San Francisco on May 14?
PolymarketAl Fateh Saudi Club vs. Al Najmah Saudi Club
PolymarketDota 2: Natus Vincere vs BetBoom Team (BO3) - DreamLeague Group B
PolymarketWill Cisco's AI orders taken from hyperscalers be at least __ in Q3?
PolymarketDota 2: PlayTime vs REKONIX (BO3) - DreamLeague Group B
PolymarketDetroit Tigers vs. New York Mets
PolymarketHighest temperature in Panama City on May 14?
PolymarketLowest temperature in Shanghai on May 14?
PolymarketAirbnb (ABNB) Up or Down on May 14?
PolymarketMiami Marlins vs. Minnesota Twins
PolymarketNVIDIA (NVDA) Up or Down on May 14?
PolymarketHighest temperature in Houston on May 14?
Polymarket2026 FIFA World Cup Winner
PolymarketPGA Championship Winner
KalshiUFC 328: Sean Strickland vs. Khamzat Chimaev (Middleweight, Main Card)
PolymarketWill Trump visit China by...?
PolymarketFC Barcelona vs. Real Madrid CF
PolymarketKnicks vs. 76ers
PolymarketSpurs vs. Timberwolves
Polymarket2026 NBA Champion
PolymarketWest Ham United FC vs. Arsenal FC
PolymarketSinner vs Medvedev
KalshiTimberwolves vs. Spurs
PolymarketManchester City FC vs. Crystal Palace FC
PolymarketThunder vs. Lakers
PolymarketSSC Napoli vs. Bologna FC 1909
PolymarketElon Musk # tweets May 5 - May 12, 2026?
PolymarketNext Prime Minister of Hungary
PolymarketNottingham Forest FC vs. Newcastle United FC
PolymarketDemocratic Presidential Nominee 2028
PolymarketPro Basketball Champion?
KalshiSpurs vs. Timberwolves
PolymarketManchester City FC vs. Brentford FC
PolymarketGame 6: Detroit at Cleveland
KalshiVfL Wolfsburg vs. FC Bayern München
PolymarketVfB Stuttgart vs. Bayer 04 Leverkusen
PolymarketLiverpool FC vs. Chelsea FC
PolymarketBitcoin above ___ on May 11?
PolymarketSS Lazio vs. FC Internazionale Milano
PolymarketVillarreal CF vs. Sevilla FC
PolymarketBitcoin above ___ on May 13?
PolymarketBitcoin above ___ on May 12?
PolymarketLoL: Movistar KOI vs G2 Esports (BO3) - LEC Regular Season
PolymarketUS x Iran permanent peace deal by...?
PolymarketSouthampton FC vs. Middlesbrough FC
PolymarketDeportivo Alavés vs. FC Barcelona
PolymarketStade Rennais FC 1901 vs. Paris FC
PolymarketACF Fiorentina vs. Genoa CFC
PolymarketRCD Espanyol de Barcelona vs. Athletic Club
PolymarketGame 6: San Antonio at Minnesota
KalshiSan Antonio vs. Minnesota
Polymarket USGame 6: Detroit at Cleveland: Total Points
KalshiLos Angeles Mayoral Election winner?
KalshiSeries Winner: Minnesota (6) vs San Antonio (2)
KalshiPGA Championship: Top 20 Finishers
KalshiStanley Cup® Champion?
KalshiGame 6: Detroit at Cleveland: Spread
KalshiEastern Conference Champion?
Kalshi2026 NHL Stanley Cup Champion
PolymarketPhiladelphia vs Pittsburgh
KalshiCombo
KalshiWho will win Survivor Season 50?
KalshiWho will be the Republican nominee for KY-04?
KalshiWill the U.S. confirm that aliens exist before 2027?
KalshiPGA Championship: Top 10 Finishers
KalshiWestern Conference Champion?
Kalshi2026 Men's World Cup winner?
KalshiDemocratic Presidential nominee in 2028?
KalshiSeries Winner: Cleveland (4) vs Detroit (1)
KalshiWhen will traffic at the Strait of Hormuz return to normal?
KalshiDetroit vs. Cleveland
Polymarket USEurovision Winner 2026?
KalshiCombo
KalshiRound 2: Los Angeles L vs Oklahoma City
Polymarket USBoston vs Atlanta
KalshiGame 6: San Antonio at Minnesota: Spread
KalshiWhich party will win the U.S. House in 2026?
KalshiNew York Y vs New York M
KalshiOhio Republican Governor primary: Vivek Ramaswamy vote percent
KalshiOklahoma City vs. Los Angeles L
Polymarket USCleveland vs. Detroit
Polymarket USNew York Yankees vs. Baltimore Orioles
Polymarket USWhat will Trump say this week?
KalshiTampa Bay Rays vs. Toronto Blue Jays
Polymarket USWho will win in the upcoming basketball event Washington vs Indiana scheduled for 2026-05-15 23:30:00+00?
Polymarket USTruist Championship Champion: Kristoffer Reitan
Polymarket USCoco Gauff vs. Iva Jovic
Polymarket USXi Jinping out before 2027?
PolymarketTruist Championship Champion: Alex Fitzpatrick
Polymarket USWho will win in the upcoming cricket event Chennai Super Kings vs Lucknow Super Giants scheduled for 2026-05-10 10:00:00+00?
Polymarket USMinnesota vs. San Antonio
Polymarket USWashington Nationals vs. Cincinnati Reds
Polymarket USWhat will happen before GTA VI?
PolymarketColorado Avalanche vs. Minnesota Wild
Polymarket USDetroit vs. Cleveland: O/U 207.5
Polymarket USGTA VI released before June 2026?
PolymarketJannik Sinner vs. Andrey Rublev
Polymarket USBuffalo Sabres vs. Montreal Canadiens
Polymarket USDetroit Tigers vs. New York Mets
Polymarket USChicago Cubs vs. Chicago White Sox
Polymarket USColorado Rockies vs. Pittsburgh Pirates
Polymarket USJasmine Paolini vs. Elise Mertens
Polymarket USONEflight Myrtle Beach Classic Champion: Mark Hubbard
Polymarket USSeattle Mariners vs. Houston Astros
Polymarket USChicago Cubs vs. Atlanta Braves
Polymarket USBuffalo Sabres vs. Montreal Canadiens
Polymarket USMili Poljicak vs. Dominic Stephan Stricker
Polymarket USMinnesota Wild vs. Colorado Avalanche
Polymarket USJannik Sinner vs. Daniil Medvedev
Polymarket USSeattle Mariners vs. Houston Astros
Polymarket USWashington Nationals vs. Cincinnati Reds
Polymarket USWill Trump be photographed every day this week? (5/3-5/9)
KalshiTrump's approval rating on May 15, 2026?
KalshiMike Tyson vs Floyd Mayweather
KalshiHow many people will Trump endorse on Truth Social this week? (5/3-5/9)
KalshiLotte Giants vs KT Wiz
KalshiMalcolm Wellmaker vs. Juan Diaz
Polymarket USPGA Championship Champion: Maverick McNealy
Polymarket USTop AI model this week
KalshiGREENGREEN: First Week Album Equivalent Units
KalshiCombo
KalshiClarke Road United vs Victoria United SC
KalshiVictor Wembanyama to Apologize for Elbowing Naz Reid
KalshiTop Coding AI this week
KalshiCHOOM: Pure Album Sales (May 01–May 07, 2026)
KalshiCombo
KalshiMarchin Patriots vs Powergen Penal Sports Club
KalshiWeekly Return: S&P 500 Total Return Vs. Nasdaq-100 Total Return
KalshiCombo
KalshiNew York M vs Colorado
KalshiGujarat Titans vs Sunrisers Hyderabad
KalshiCombo
KalshiGeneric Ballot: Democrats Up/Down (5/8-5/15)?
KalshiCombo
KalshiCombo
KalshiCombo
KalshiGujarat Titans vs Sunrisers Hyderabad
KalshiSt. Louis vs San Diego
KalshiCombo
KalshiCombo
KalshiCombo
KalshiCombo
Kalshi2026 FIFA World Cup Winner
PolymarketUS x Iran ceasefire extended by...?
PolymarketFed decision in April?
PolymarketIsrael x Hezbollah ceasefire by...?
Polymarket2026 NBA Champion
PolymarketWhat price will Bitcoin hit in April?
PolymarketIran x Israel/US conflict ends by...?
PolymarketDemocratic Presidential Nominee 2028
PolymarketNext Prime Minister of Hungary
PolymarketWill the Iranian regime fall by April 30?
PolymarketStrait of Hormuz traffic returns to normal by end of April?
PolymarketPro Basketball Champion?
KalshiWhat will WTI Crude Oil (WTI) hit in April 2026?
PolymarketQatarEnergy announces/resumes LNG production in Qatar by April 30?
PolymarketTamil Nadu Legislative Assembly Election Winner
PolymarketPGA Championship Winner
KalshiTrump out as President by April 30?
PolymarketColombia Chamber of Representatives Election: 3rd Place
PolymarketKharg Island no longer under Iranian control by...?
PolymarketWill Trump visit China by...?
PolymarketUFC 328: Sean Strickland vs. Khamzat Chimaev (Middleweight, Main Card)
PolymarketClub Atlético de Madrid vs. Arsenal FC
PolymarketLargest Company end of April?
PolymarketWhich company has the best AI model end of April?
PolymarketFC Barcelona vs. Real Madrid CF
PolymarketLakers vs. Rockets
PolymarketMagic vs. Pistons
PolymarketLakers vs. Thunder
PolymarketTrump announces end of military operations against Iran by ...?
PolymarketWarriors vs. Suns
PolymarketChelsea FC vs. Nottingham Forest FC
PolymarketWhat price will Ethereum hit in April?
Polymarket76ers vs. Celtics
PolymarketRaptors vs. Cavaliers
PolymarketKnicks vs. 76ers
PolymarketSinner vs Medvedev
KalshiEastern Conference Champion?
KalshiStanley Cup® Champion?
KalshiDemocratic Presidential nominee in 2028?
KalshiWestern Conference Champion?
KalshiGame 6: Detroit at Cleveland
Kalshi2026 NHL Stanley Cup Champion
PolymarketSeries Winner: Minnesota (6) vs San Antonio (2)
KalshiWho will be the next governor of California?
KalshiWhen will traffic at the Strait of Hormuz return to normal?
KalshiLos Angeles Mayoral Election winner?
KalshiVirginia redistricting referendum margin of victory?
KalshiWho will win Survivor Season 50?
KalshiWill the U.S. confirm that aliens exist before 2027?
KalshiMVP Winner?
Kalshi2026 Men's World Cup winner?
KalshiPhiladelphia vs. Boston
Polymarket USGame 6: San Antonio at Minnesota
KalshiChampions League Winner
KalshiSan Antonio vs. Minnesota
Polymarket USGame 6: Detroit at Cleveland: Total Points
KalshiIPL Champion
KalshiNext US Presidential Election Winner?
KalshiRepublican nominee for President in 2028?
KalshiWhich party will win the U.S. House in 2026?
KalshiPro Baseball Champion
KalshiToronto vs. Cleveland
Polymarket USWho will be the Republican nominee for KY-04?
KalshiPGA Championship: Top 20 Finishers
KalshiNew US-Iran nuclear deal in 2026?
KalshiSeries Winner: Cleveland (4) vs Detroit (1)
KalshiGame 6: Detroit at Cleveland: Spread
KalshiXi Jinping out before 2027?
PolymarketRound 2: New York vs Philadelphia
Polymarket USHouston vs. Los Angeles L
Polymarket USDenver vs. Minnesota
Polymarket USWhat will Trump say during his remarks at Turning Point USA?
KalshiWill Trump be photographed every day this week? (4/26-5/2)
KalshiBoston vs. Philadelphia
Polymarket USWho will have a #1 song on Spotify USA in April?
KalshiHow many Gold Cards will Trump issue before May?
KalshiDetroit vs. Cleveland
Polymarket USGTA VI released before June 2026?
PolymarketWhat will happen before GTA VI?
PolymarketToronto vs. Cleveland
Polymarket USPhiladelphia Phillies vs. Miami Marlins
Polymarket USCleveland vs. Toronto
Polymarket USMike Tyson vs Floyd Mayweather
KalshiRound 2: Los Angeles L vs Oklahoma City
Polymarket USHouston vs. Los Angeles L
Polymarket USOklahoma City vs. Los Angeles L
Polymarket USCleveland vs. Detroit
Polymarket USPortland vs. San Antonio
Polymarket USCarolina Hurricanes vs. Philadelphia Flyers
Polymarket USWhat will Trump say this week?
KalshiNew York Yankees vs. Baltimore Orioles
Polymarket USPhiladelphia vs. New York
Polymarket USLos Angeles Dodgers vs. Colorado Rockies
Polymarket USHow many times will Trump visit Mar-a-Lago in Apr 2026?
KalshiTop AI model in April?
KalshiColorado Rockies vs. Philadelphia Phillies
Polymarket USCharlotte vs. Orlando
Polymarket USWhat will Trump say this week?
KalshiPhiladelphia Phillies vs. Atlanta Braves
Polymarket USWhat will Trump say this week?
KalshiTruist Championship Champion: Kristoffer Reitan
Polymarket USTampa Bay Rays vs. Toronto Blue Jays
Polymarket USWho will win in the upcoming basketball event Washington vs Indiana scheduled for 2026-05-15 23:30:00+00?
Polymarket USCoco Gauff vs. Iva Jovic
Polymarket USAthletics vs. Texas Rangers
Polymarket USPIT Penguins vs. PHI Flyers
Polymarket USNew York Yankees vs. Texas Rangers
Polymarket USWhat will Trump say this week?
KalshiWhat will Trump say this month?
KalshiUCL Final Qualifiers
Kalshi"Mother Mary" Rotten Tomatoes score?
KalshiWhich DHS components will receive more funding before May?
KalshiWill Trump be photographed every day this week? (4/19-4/25)
KalshiJannik Sinner vs. Daniil Medvedev
Polymarket USWhen will FISA be reauthorized again?
KalshiWho will have a #1 song on Spotify Global in April?
KalshiNumber of tornadoes in Apr 2026?
KalshiRound 2: Cleveland vs Detroit
Polymarket USWhat will Jeff Probst say during Survivor Ep 9?
KalshiWill Trump be photographed every day 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?
KalshiTrump's approval rating on Apr 24, 2026?
KalshiTop AI model this week
KalshiTrump late night post this week? (4/19-4/25)
KalshiWhat will Candace Owens say during her livestream?
KalshiHow many people will Trump endorse on Truth Social this week? (4/12-4/18)
KalshiTrump's approval rating on May 15, 2026?
KalshiTrump's approval rating on May 1, 2026?
KalshiMalcolm Wellmaker vs. Juan Diaz
Polymarket USHow 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.
