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Category Breakdown
Compare volume and activity across platforms by category
Kalshi Categories
| Category | Markets | Volume | Change |
|---|---|---|---|
| Politics | 13,077 | $2.4M | -31.5% |
| Sports | 47,863 | $228.3M | +8.7% |
| Crypto | 4,617 | $99.9M | -14.9% |
| Economics | 3,990 | $538.9K | -67.7% |
| Finance | 4,937 | $126.7K | -90.7% |
| Tech | 2,866 | $110.2K | -46.6% |
| Culture | 6,533 | $368.2K | -36.2% |
| Weather | 1,962 | $1.2M | -5.8% |
| Misc | 1,281 | $849.4K | +137.4% |
| World | 199 | $78.3K | -45.4% |
Polymarket Categories
| Category | Markets | Volume | Change |
|---|---|---|---|
| Politics | 3,032 | $5.1M | -19% |
| Sports | 11,417 | $34.7M | -2.1% |
| Crypto | 5,326 | $16.8M | -18.6% |
| Economics | 356 | $89.6K | -91.4% |
| Finance | 375 | $94.3K | -64.8% |
| Tech | 156 | $22.2K | -48.9% |
| Culture | 254 | $186.0K | +55.5% |
| Weather | 51 | $42.1K | -63.2% |
| Misc | 135,037 | $64.0M | +41.3% |
| Mentions | 4 | $0 | +42.2% |
Kalshi Categories
| Category | Markets | Volume | Change |
|---|---|---|---|
| Politics | 5,228 | $33.7M | +118.9% |
| Sports | 76,708 | $2.0B | -9.2% |
| Crypto | 21,084 | $1.2B | +7.3% |
| Economics | 5,783 | $10.1M | -56.3% |
| Finance | 15,766 | $35.0M | +95.1% |
| Tech | 1,473 | $1.2M | -56.3% |
| Culture | 3,134 | $4.2M | -9.1% |
| Weather | 9,357 | $13.5M | +26.7% |
| Misc | 959 | $667.2K | -5.6% |
| World | 266 | $926.5K | -5.8% |
Polymarket Categories
| Category | Markets | Volume | Change |
|---|---|---|---|
| Politics | 2,511 | $54.0M | -26.8% |
| Sports | 6,544 | $299.2M | -1.2% |
| Crypto | 10,749 | $160.7M | -6.2% |
| Economics | 308 | $3.4M | -93.8% |
| Finance | 422 | $1.9M | -63.3% |
| Tech | 128 | $346.4K | +8.2% |
| Culture | 185 | $1.4M | -22.1% |
| Weather | 59 | $397.2K | +19.4% |
| Misc | 83,715 | $474.6M | -13.2% |
| Mentions | 7 | $35.9K | +642.2% |
Kalshi Categories
| Category | Markets | Volume | Change |
|---|---|---|---|
| Politics | 10,098 | $92.0M | +5.9% |
| Sports | 240,399 | $9.4B | -16% |
| Crypto | 98,861 | $4.5B | +48.6% |
| Economics | 17,905 | $60.5M | +60.1% |
| Finance | 49,051 | $75.5M | +188.5% |
| Tech | 2,557 | $7.2M | +12.6% |
| Culture | 6,830 | $23.5M | -32.2% |
| Weather | 36,715 | $53.0M | +66.3% |
| Misc | 3,345 | $4.9M | -85.7% |
| World | 531 | $3.3M | -98.7% |
Polymarket Categories
| Category | Markets | Volume | Change |
|---|---|---|---|
| Politics | 3,256 | $350.5M | -48.2% |
| Sports | 16,686 | $1.5B | -72.3% |
| Crypto | 65,436 | $936.0M | -24.8% |
| Economics | 382 | $110.6M | -23.9% |
| Finance | 696 | $12.7M | -62% |
| Tech | 174 | $1.6M | -86.7% |
| Culture | 317 | $7.0M | -59% |
| Weather | 103 | $1.5M | +38% |
| Misc | 236,759 | $2.8B | -40.5% |
| Mentions | 17 | $66.9K | +3.2% |
Weekly volume analysis
Weekly Prediction Markets Volume Falls Below $10B For First Time Since June
Prediction markets cool after the World Cup, but Kalshi gains more share as sports and Fed markets drive trading.
Kalshi World Cup Volume Exploded to $13.8 Billion, an All-Time Event Record
World Cup trading dwarfed volume tied to any previous event on Kalshi and helped propel the exchange to new daily, weekly and monthly records. DeFi Rate breaks down the market types, matches and individual contracts that drew the most volume
Kalshi Tops $7.5B With a Day Left, Smashing Its Own Weekly Volume Record
Kalshi has already surpassed $7.49 billion in notional volume for the week of June 15, surpassing its prior record of $6.38B with Sunday’s session still open. The partial total runs 17.5% above the previous record through just six closed days, putting Kalshi on track for its first $8B-plus week — a likely $8.5B to $8.9B […]
Kalshi Crosses $100B Milestone as World Cup Drives Daily Volume Over $1B
Kalshi crossed $100 billion in lifetime notional volume last week, and followed it up with its first-ever billion-dollar trading days on Saturday and Sunday. Kalshi’s notional volume total for the week of June 8 came in at $6.38 billion, up 43% from $4.46B the prior week, marking yet another weekly volume record by a wide […]
Kalshi Sets $17.9B Record May as World Cup Lifts Polymarket US to Weekly High
Kalshi closed May with $17.91 billion in notional volume, its ninth consecutive monthly record and a 21% jump from April’s then-record $14.81B, according to DeFi Rate’s prediction markets volume tracker. Polymarket posted $7.08 billion in the same month, representing a 21% decline from its $10.57B March peak and its lowest monthly total since January. The […]
Forecast: World Cup Prediction Market Volume Could Hit $2.5 Billion in the US
Prediction markets could drive as much as $2.5 billion in trading activity on the 2026 World Cup, with $1.47-1.93 billion trading on Kalshi. The current World Cup Winner contract is trending higher than March Madness and will likely reach ~$253 million in volume by the end of the tournament.
Top Markets by Volume
Highest trading activity across platforms
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KalshiSamsonova vs Rybakina
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KalshiWho will win in the upcoming baseball event Cincinnati Reds vs Washington Nationals scheduled for August 9, 2026 at 4:15 PM UTC?
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KalshiWyndham Championship Winner: Michael Brennan
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KalshiToronto vs Philadelphia
KalshiA's vs Boston
KalshiWyndham Championship Winner: Beau Hossler
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Polymarket USTien vs Tirante
KalshiZhang vs Zhu
KalshiAtlanta vs New York Y
KalshiSvitolina vs Anisimova
KalshiFight Night: Gamrot vs Salkilld
KalshiMiami vs Monterrey
KalshiLoL: BNK FEARX vs Kiwoom DRX (BO3) - LCK Round 3-4 Rise Group
PolymarketToluca vs Los Angeles F
KalshiSeattle vs Portland
KalshiLoL: Dplus KIA vs KT Rolster (BO3) - LCK Round 3-4 Legend Group
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KalshiKorneeva vs Gauff
KalshiLehecka vs Jodar
KalshiWho will win in the upcoming baseball event Minnesota Twins vs Milwaukee Brewers scheduled for August 9, 2026 at 6:10 PM UTC?
Polymarket USA's vs Boston
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KalshiHuang vs Cakarevic
KalshiLas Vegas vs New York
KalshiCincinnati vs Washington
KalshiBTC 15 min · $64,890.74 target
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KalshiBTC 15 min · $64,802.45 target
KalshiLoL: Movistar KOI vs GIANTX (BO3) - LEC Regular Season
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Polymarket USSilva vs Fontenel
KalshiWho will win in the upcoming baseball event Tampa Bay Rays vs Seattle Mariners scheduled for August 9, 2026 at 8:10 PM UTC?
Polymarket USGuadalajara vs Dallas
KalshiBTC 15 min · $64,742.64 target
KalshiWho will win in the upcoming basketball event Las Vegas vs New York scheduled for August 9, 2026 at 4:30 PM UTC?
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PolymarketPhoenix vs Washington
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KalshiDallas vs Minnesota
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PolymarketClube do Remo vs. CA Mineiro
PolymarketBTC price on Aug 9, 2026 at 5pm EDT?
KalshiBotafogo FR vs. Fluminense FC
PolymarketSeattle vs Queretaro
KalshiBitcoin above ___ on August 8?
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KalshiElon Musk # tweets August 6 - August 8, 2026?
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PolymarketInter Miami CF vs. CF Monterrey
PolymarketUEFA Champions League: 2027 Champion
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Polymarket USDetroit Tigers vs. San Francisco Giants
PolymarketIndiana Fever vs. Chicago Sky
PolymarketPSV vs. Fortuna Sittard
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PolymarketAtlanta Braves vs. New York Yankees
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KalshiCleveland vs Chicago WS
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KalshiWhich party will gain most seats in Russian Parliamentary Election?
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PolymarketFrosinone vs Lazio
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Polymarket USBrazil Presidential Election
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Polymarket USLos Angeles Dodgers vs. Arizona Diamondbacks
PolymarketElon Musk # tweets August 4 - August 11, 2026?
PolymarketCleveland Guardians vs. Chicago White Sox
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PolymarketMinnesota Twins vs. Milwaukee Brewers
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PolymarketColorado Rockies vs. St. Louis Cardinals
PolymarketTrump out as President by August 31?
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PolymarketLoL: KT Rolster vs Gen.G (BO3) - LCK Round 3-4 Legend Group
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PolymarketElon Musk # tweets July 28 - August 4, 2026?
PolymarketElon Musk # tweets July 31 - August 7, 2026?
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PolymarketBitcoin above ___ on August 7?
PolymarketDota 2: Team Falcons vs BetBoom Team (BO3) - 1win Essence Playoffs
PolymarketNext French Presidential Election
PolymarketDemocratic Presidential nominee in 2028?
KalshiWhat price will Bitcoin hit August 3-9?
PolymarketUS-Iran Final Nuclear Deal by…?
PolymarketWhich party will gain most seats in Russian Parliamentary Election?
PolymarketIsrael x Iran ceasefire continues through...?
PolymarketNational Bank Open: Alina Korneeva vs Coco Gauff
PolymarketFed decision in Sep 2026?
KalshiMen's PFA Player of the Year: Bruno Fernandes
Polymarket USNBA: 2027 Champion
PolymarketElon Musk # tweets August 4 - August 11, 2026?
PolymarketIran leadership change by...?
PolymarketUS x Iran Effective Ceasefire by...? (2 week pause)
PolymarketStrait of Hormuz traffic returns to normal by September 30?
PolymarketWhen will traffic at the Strait of Hormuz return to normal?
KalshiMLB World Series Champion 2026
PolymarketWyndham Championship Winner: Alexander Noren
Polymarket USIran leader end of 2026?
PolymarketNext US Presidential Election Winner?
KalshiWhich party will win the U.S. House in 2026?
KalshiFed rate hike in 2026?
PolymarketLos Angeles Mayoral Election winner?
KalshiWyndham Championship Winner: Alex Smalley
Polymarket USWill the Iranian regime fall before 2027?
PolymarketWyndham Championship: Top 20 Finishers
KalshiSouth Carolina Republican Senate special primary winner?
Kalshi2027 Pro Football Champion
KalshiDemocratic nominee for Governor in Wisconsin?
KalshiWho will win in the upcoming mma event Islam Makhachev vs Ian Machado Garry scheduled for August 15, 2026 at 11:40 PM UTC?
Polymarket USNFC East Division Winner: Philadelphia
Polymarket US2027 Pro Basketball Champion
KalshiSteph Curry's Next Team
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Polymarket USHow high will BTC get in August?
KalshiEnglish Premier League Champion: Manchester City
Polymarket USGuemes vs Tristan Suarez
KalshiWho will drop out of their primary?
KalshiWill the Senate vote on the CLARITY Act before the August recess?
Kalshi"One Night Only" Rotten Tomatoes score?
KalshiWill the U.S. confirm that aliens exist before 2027?
KalshiPro Football Offensive Player of the Year: DeVonta Smith
Polymarket USWill crypto market structure legislation become law?
KalshiRepublican nominee for President in 2028?
KalshiWill Americans be required to have a passport or birth certificate to vote?
KalshiMichigan Senate Democratic Primary Margin of Victory?: El-Sayed 0-5
Polymarket USWyndham Championship Winner: Davis Thompson
Polymarket USWho will win the Senate race in Michigan?
KalshiWyndham Championship: Top 10 Finishers
KalshiWho will win the Senate race in Texas?
KalshiWho will win the governorship in Texas?
KalshiWhat will Trump say this week?
KalshiWho will win the governorship in Pennsylvania?
Kalshipetal: First Week Album Equivalent Units
KalshiLIV Golf New York Champion?
KalshiWho will win in the upcoming mma event Jalin Turner vs Kaue Fernandes scheduled for August 16, 2026 at 12:00 AM UTC?
Polymarket USWho will win in the upcoming mma event Mackenzie Dern vs Gillian Robertson scheduled for August 15, 2026 at 11:20 PM UTC?
Polymarket USSouth Carolina Senate Republican Special Primary Winner?: Darline Graham Nordone
Polymarket USFed Rate Hike in 2026?
Polymarket USGuemes vs Tristan Suarez: Total Goals
KalshiWho will win in the upcoming esports event Inner Circle Prospect vs ENCE Prospects scheduled for August 9, 2026 at 8:00 AM UTC?
Polymarket USpetal: First Week Pure Album Sales
KalshiTop Chinese AI Company week of July 27th
KalshiTop AI model this week
KalshiAfghanistan Pathans vs Asian Stars
KalshiTrump's approval rating on Aug 7, 2026?
KalshiWho will Mallory McMorrow endorse in the Michigan Senate race?
KalshiSamsung Lions vs Lotte Giants
KalshiGuemes vs Tristan Suarez: Spread
KalshiKia Tigers vs NC Dinos
KalshiHow many people will Trump endorse on Truth Social this week? (8/1-8/7)
KalshiKia Tigers vs NC Dinos
KalshiBirmingham Legion FC vs New Mexico United
KalshiBoyaca Chico vs Atletico Nacional
KalshiTecolotes de Los Dos Laredos vs Sultanes de Monterrey
KalshiWill Trump's approval rating increase this week? (7/31-8/7)?
KalshiSamsung Lions vs Lotte Giants: Total Runs
KalshiSamsung Lions vs Lotte Giants: Spread
KalshiAll Boys vs Central Norte
KalshiOfficial World Golf Ranking: Top 20 on August 3rd, 2026
KalshiDeportes Limache vs Nublense: Total Goals
KalshiKia Tigers vs NC Dinos: Total Runs
KalshiHalo: Campaign Evolved: Metacritic score
KalshiGeneric Ballot: Democrats Up/Down (7/31-8/7)?
KalshiKia Tigers vs NC Dinos: Total Runs
KalshiTop Coding AI this week
KalshiAcademia Anzoategui FC vs Tachira
KalshiWhich team will advance from France vs Spain on 2026-07-14 3:00PM ET?
Polymarket USWhich team will advance from Spain vs Argentina on 2026-07-19 3:00PM ET?
Polymarket USWhich team will advance from England vs Argentina on 2026-07-15 3:00PM ET?
Polymarket USFed Decision in July?
PolymarketFrance vs. Spain - More Markets
PolymarketWhich team will advance from Norway vs England on 2026-07-11 5:00PM ET?
Polymarket USEngland vs. Argentina - More Markets
PolymarketYosuke Watanuki vs. Andre Ilagan
Polymarket USFrance vs. Spain
PolymarketWho will win in the upcoming baseball event Baltimore Orioles vs Boston Red Sox scheduled for July 21, 2026 at 11:10 PM UTC?
Polymarket USWhich team will advance from Argentina vs Switzerland on 2026-07-11 9:00PM ET?
Polymarket USWill both teams score in the match between Spain and Argentina on 2026-07-19 3:00PM ET?
Polymarket USJannik Sinner vs. Alexander Zverev
Polymarket USWill both teams score in the match between England and Argentina on 2026-07-15 3:00PM ET?
Polymarket USSpain vs. Belgium - More Markets
PolymarketWhich team will advance from France vs England on 2026-07-18 5:00PM ET?
Polymarket USWill both teams score in the match between France and Spain on 2026-07-14 3:00PM ET?
Polymarket USSpain vs. Belgium
PolymarketWill both teams score in the match between Norway and England on 2026-07-11 5:00PM ET?
Polymarket USEngland vs. Argentina
PolymarketEngland vs. Argentina - Exact Score
PolymarketRio Noguchi vs. Braden Shick
Polymarket USNorway vs. England - More Markets
PolymarketFrance vs. Spain - Exact Score
PolymarketPresidential Election Winner 2028
PolymarketWill Trump be in the WC Champions Photo?
PolymarketSpain vs. Argentina - Exact Score
PolymarketWill Erling Haaland record at least 1 goals in NOR vs ENG?
Polymarket USMilwaukee Brewers vs. Pittsburgh Pirates
Polymarket USDemocratic Presidential Nominee 2028
PolymarketWill the total in NOR vs ENG be more than 2.5?
Polymarket USArgentina vs. Switzerland - More Markets
PolymarketNorway vs. England
PolymarketArgentina vs. Switzerland
PolymarketNorway vs. England - Exact Score
PolymarketWill the total in ENG vs ARG be more than 1.5?
Polymarket USFed Decision in September?
PolymarketWill the U.S. invade Iran before 2027?
PolymarketMilwaukee Brewers vs. Pittsburgh Pirates
Polymarket USWill France win against Spain in the World Cup match scheduled for Jul 14, 2026?
Polymarket USWhat price will Bitcoin hit in July?
PolymarketBallon d'Or Winner 2026
PolymarketSpain vs. Argentina - More Markets
PolymarketFrance vs. England - More Markets
PolymarketIran leader end of 2026?
PolymarketStrait of Hormuz traffic returns to normal by...?
PolymarketKarolina Muchova vs. Linda Noskova
Polymarket USWyndham Championship Winner
KalshiSpain vs. Belgium - Exact Score
PolymarketRepublican Presidential Nominee 2028
PolymarketJessica Pegula vs. Alexandra Eala
Polymarket USFrance vs. England - Exact Score
PolymarketWill Argentina win against England in the World Cup match scheduled for Jul 15, 2026?
Polymarket USAleksandar Vukic vs. August Holmgren
Polymarket USF1 Drivers' Champion
PolymarketWho will win in the upcoming baseball event Minnesota Twins vs Cleveland Guardians scheduled for July 20, 2026 at 10:40 PM UTC?
Polymarket USArgentina vs. Switzerland - Exact Score
PolymarketUFC 329: Max Holloway vs. Conor McGregor (Welterweight, Main Card)
PolymarketFrance vs. England
PolymarketWho will win in the upcoming baseball event Seattle Mariners vs Los Angeles Dodgers scheduled for July 31, 2026 at 2:10 AM UTC?
Polymarket USStrait of Hormuz traffic returns to normal by July 31?
PolymarketWho will win in the upcoming baseball event Los Angeles Dodgers vs Chicago Cubs scheduled for August 5, 2026 at 6:20 PM UTC?
Polymarket USNBA: 2027 Champion
PolymarketWho will win in the upcoming baseball event Texas Rangers vs Tampa Bay Rays scheduled for July 30, 2026 at 4:10 PM UTC?
Polymarket USWho will win in the upcoming baseball event Toronto Blue Jays vs Houston Astros scheduled for August 5, 2026 at 6:10 PM UTC?
Polymarket USWho will win in the upcoming baseball event Boston Red Sox vs Los Angeles Dodgers scheduled for August 1, 2026 at 2:10 AM UTC?
Polymarket USStrait of Hormuz traffic returns to normal by July 15?
PolymarketBrazil Presidential Election
PolymarketDemocratic Presidential nominee in 2028?
KalshiNext French Presidential Election
PolymarketLoL: Gen.G vs Dplus KIA (BO3) - Esports World Cup Playoffs
PolymarketLargest Company end of July?
PolymarketHow many Fed rate cuts in 2026?
PolymarketSpain vs. Argentina
PolymarketLoL: Top Esports vs ThunderTalk Gaming (BO3) - LPL Group Ascend
PolymarketWho will be the next Prime Minister of Israel after the next election?
PolymarketUEFA Champions League: 2027 Champion
PolymarketWhat price will Bitcoin hit in 2026?
PolymarketUS-Iran Final Nuclear Deal by…?
PolymarketNBA: 2026-27 Rookie of the Year
PolymarketEPL: 2027 Champion
PolymarketPro Baseball Champion
KalshiClarity Act (H.R.3633) signed into law in 2026?
PolymarketWhat will WTI Crude Oil (WTI) hit in August 2026?
PolymarketUS announces end of Iranian blockade by...?
PolymarketWyndham Championship Winner: Michael Brennan
Polymarket USWhat price will Bitcoin hit in August?
PolymarketFed rate hike in 2026?
PolymarketMLB World Series Champion 2026
PolymarketWyndham Championship Winner: Beau Hossler
Polymarket USWhich party will gain most seats in Russian Parliamentary Election?
PolymarketRepublican nominee for Governor in Florida?
KalshiWill the Iranian regime fall before 2027?
PolymarketWyndham Championship Winner: Tom Kim
Polymarket USClacton by-election Winner
PolymarketIsrael x Iran ceasefire continues through...?
PolymarketStrait of Hormuz traffic returns to normal by December 31?
PolymarketWhen will traffic at the Strait of Hormuz return to normal?
Kalshi2027 Pro Basketball Champion
KalshiLos Angeles Mayoral Election winner?
KalshiMichigan Democratic Senate primary margin of victory?
KalshiWhich party will win the U.S. House in 2026?
KalshiSouth Carolina Republican Senate special primary winner?
Kalshi2027 Pro Football Champion
KalshiNext US Presidential Election Winner?
KalshiFed decision in Sep 2026?
KalshiRepublican nominee for President in 2028?
KalshiWho will win the Ballon d'Or in 2026?
KalshiDemocratic nominee for Governor in Wisconsin?
KalshiWill Americans be required to have a passport or birth certificate to vote?
KalshiSteph Curry's Next Team
KalshiMen's PFA Player of the Year: Bruno Fernandes
Polymarket USWill the U.S. confirm that aliens exist before 2027?
KalshiWho will win in the upcoming mma event Islam Makhachev vs Ian Machado Garry scheduled for August 15, 2026 at 11:40 PM UTC?
Polymarket USWho will win the Senate race in Texas?
KalshiWill crypto market structure legislation become law?
KalshiWho will win the 2026 Senate race in North Carolina?
KalshiWyndham Championship Winner: Alexander Noren
Polymarket USWyndham Championship Winner: Alex Smalley
Polymarket USNew US-Iran nuclear deal in 2026?
KalshiBitcoin price at the end of 2026
KalshiWyndham Championship: Top 20 Finishers
KalshiWho will be the next governor of California?
KalshiFlorida Republican Governor primary: James Fishback vote percent
KalshiOscar for Best Picture?
KalshiWill Mitch McConnell resign his office before the midterms?
KalshiLeBron James announces retirement before the 2026-27 season?
KalshiArtist(s) with a #1 Song on Spotify USA: July
KalshiNFC East Division Winner: Philadelphia
Polymarket USWho will win in the upcoming mma event Vicente Luque vs Tresean Gore scheduled for August 15, 2026 at 11:20 PM UTC?
Polymarket USEnglish Premier League Champion: Manchester City
Polymarket USPro Football Offensive Player of the Year: Ladd McConkey
Polymarket USGuemes vs Tristan Suarez
KalshiWhat companies will Trump say in July?
KalshiMichigan Senate Democratic Primary Margin of Victory?: El-Sayed 0-5
Polymarket USpetal: First Week Album Equivalent Units
KalshiCalifornia Governor Election Winner: Xavier Becerra
Polymarket USWyndham Championship Winner: Davis Thompson
Polymarket USWhat will Trump say this week?
KalshiWhen will Drake release Iceman?
KalshiWhat will Trump say in July?
KalshiTop AI model in July?
KalshiWho will win in the upcoming mma event Jalin Turner vs Kaue Fernandes scheduled for August 16, 2026 at 12:00 AM UTC?
Polymarket USWhat will Trump say this week?
Kalshipetal: First Week Pure Album Sales
KalshiGuemes vs Tristan Suarez: Total Goals
KalshiHow many times will Trump visit Mar-a-Lago in Jul 2026?
KalshiTrump's approval rating on Jul 31, 2026?
KalshiTrump's approval rating on Jul 24, 2026?
KalshiDoosan Bears vs KT Wiz
KalshiNL All-Star Selection
KalshiTop AI model this week
KalshiToronto Nationals vs Surrey Jaguars
KalshiTop Coding AI this month
KalshiAL All-Star Selection
KalshiTop Chinese AI Company week of July 27th
KalshiTop AI model this week
KalshiTrump's approval rating on Jul 17, 2026?
KalshiFukuoka Hawks vs Tohoku Rakuten Golden Eagles
KalshiPro Baseball Home Run Derby Selections
KalshiNumber of tornadoes in Jul 2026?
KalshiVancouver Knights vs Mississauga Bangla Tigers
KalshiBest Chinese AI Company this week
KalshiHow many people will Trump pardon in Jul 2026?
KalshiChountra Rams vs Multan Panthers
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.
