Prediction Market Volume: Kalshi & Polymarket Aggregated Data

Live Data
Weekly Notional Volume Total USD value of contracts traded during the last complete calendar week.
$11.1B
K Kalshi
$9.1B (82%)
P Polymarket
$2.0B (18%)
U Polymarket US
$5.9M (0%)
Active Markets Number of prediction markets currently open for trading on each platform.
300,658
K Kalshi
102,780 (34%)
P Polymarket
169,409 (56%)
U Polymarket US
28,469 (10%)
Weekly Transactions Total number of trades executed during the last complete calendar week.
82,414,245
K Kalshi
64,259,632 (78%)
P Polymarket
18,154,613 (22%)
U Polymarket US
— (—)
Open Interest Total USD value of unsettled contracts currently held by traders.
$1.5B
K Kalshi
$965.7M (65%)
P Polymarket
$496.1M (34%)
U Polymarket US
$17.2M (1%)
Last updated: August 30, 2026 at 5:50 AM PDT

Kalshi
CFTC Regulated
Volume (rolling)
24H $375.5M -29.3%
7D $3.3B -2.4%
30D $14.1B -2.8%
Top Categories (24h)
1 ⚽ Sports $213.7M
2 ₿ Crypto $141.0M
3 🏛️ Politics $7.1M
Top Markets (24h)
1
North Carolina vs TCU
🏈 Sports $8.2M
2
Hawai'i vs Stanford
🏈 Sports $6.1M
3
Memphis vs UNLV
🏈 Sports $5.9M
Polymarket
Decentralized Platform
Volume (rolling)
24H $167.4M +1.6%
7D $764.6M +79.3%
30D $3.3B -59.1%
Top Categories (24h)
1 📦 Misc $95.3M
2 ⚽ Sports $46.5M
3 ₿ Crypto $19.7M
Top Markets (24h)
1
LoL: Top Esports vs LGD Gaming (BO5) - LPL Playoffs
⚽ Sports $4.1M
2
Liverpool FC vs. Nottingham Forest FC
⚽ Sports $3.7M
3
Crystal Palace FC vs. Manchester City FC
⚽ Sports $3.6M

Category Breakdown

Compare volume and activity across platforms by category

K

Kalshi Categories

CategoryMarketsVolumeChange
Politics13,467$7.1M+3.7%
Sports77,391$213.7M-19%
Crypto7,033$141.0M-38.9%
Economics4,584$712.4K-63%
Finance4,642$39.9K-95.1%
Tech2,904$147.0K-33%
Culture8,199$1.9M-49.8%
Weather2,487$863.6K-20.5%
Misc1,146$383.5K-58.4%
World227$34.3K-65.8%
P

Polymarket Categories

CategoryMarketsVolumeChange
Politics2,850$6.2M+5.4%
Sports12,527$46.5M-24.3%
Crypto5,457$19.7M-33.5%
Economics362$271.6K+30.2%
Finance359$118.4K-26.1%
Tech158$88.8K-11%
Culture243$143.9K+52.7%
Weather57$17.3K-56.6%
Misc171,477$95.3M-4.6%
Mentions3$8
K

Kalshi Categories

CategoryMarketsVolumeChange
Politics5,664$64.3M+55.3%
Sports99,959$1.8B-7.5%
Crypto35,557$1.3B+0.1%
Economics5,009$12.2M+60.9%
Finance14,001$119.1M+36.4%
Tech1,288$2.0M+85.3%
Culture4,429$17.6M+56.3%
Weather11,184$8.6M-17.7%
Misc4,303$1.7M+287.2%
World258$2.3M+111.5%
P

Polymarket Categories

CategoryMarketsVolumeChange
Politics2,114$40.8M-23.1%
Sports5,227$204.1M+112.1%
Crypto7,771$105.9M+259.6%
Economics255$1.8M+17.6%
Finance272$1.4M+26%
Tech116$526.6K+94.7%
Culture147$1.7M+93.3%
Weather63$318.5K+14.6%
Misc71,549$408.0M+67.5%
Mentions1$8-99.5%
K

Kalshi Categories

CategoryMarketsVolumeChange
Politics11,264$178.4M+132.4%
Sports311,118$8.4B-17%
Crypto106,466$5.0B+23.5%
Economics16,871$42.4M-27.7%
Finance58,258$294.5M+583.1%
Tech2,896$7.0M+6.5%
Culture8,258$38.2M+30%
Weather39,449$46.8M-0.2%
Misc7,024$4.7M+3.7%
World700$5.1M+69.5%
P

Polymarket Categories

CategoryMarketsVolumeChange
Politics3,066$209.3M-55.2%
Sports18,361$885.4M-60.6%
Crypto31,942$461.6M-58.1%
Economics352$9.9M-92.5%
Finance539$7.2M-44.9%
Tech168$1.5M-37.3%
Culture263$5.5M-33.3%
Weather115$1.4M-7.8%
Misc246,316$1.7B-58%
Mentions12$41.3K+27.9%

Weekly volume analysis

1 / 1
Data

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 […]

Top Markets by Volume

Highest trading activity across platforms

1
North Carolina vs TCU
Kalshi 🏈 Sports
North Carolina Outcome
$8.2M
Aug 29
Closed
1

North Carolina vs TCU

Kalshi
🏈 Sports Closed
Outcome North Carolina
Volume $8.2M
2
Hawai'i vs Stanford
Kalshi 🏈 Sports
Stanford Outcome
$6.1M
Aug 29
Closed
2

Hawai'i vs Stanford

Kalshi
🏈 Sports Closed
Outcome Stanford
Volume $6.1M
3
Memphis vs UNLV
Kalshi 🏈 Sports
UNLV 72%
$5.9M
$5.2M
Aug 31
Closing Soon
3

Memphis vs UNLV

Kalshi
🏈 Sports Closing Soon
UNLV 72%
Memphis 29%
Volume
$5.9M
Open Int.
$5.2M
Ends
Aug 31
4
Parry vs Mertens
Kalshi 🎾 Sports
Diane Parry Outcome
$4.5M
Aug 29
Closed
4

Parry vs Mertens

Kalshi
🎾 Sports Closed
Outcome Diane Parry
Volume $4.5M
5
LoL: Top Esports vs LGD Gaming (BO5) - LPL Playoffs
Polymarket ⚽ Sports
LGD Gaming Outcome
$4.1M
Aug 29
Closed
5

LoL: Top Esports vs LGD Gaming (BO5) - LPL Playoffs

Polymarket
⚽ Sports Closed
Outcome LGD Gaming
Volume $4.1M
6
Liverpool FC vs. Nottingham Forest FC
Polymarket ⚽ Sports
Draw Outcome
$3.7M
Aug 29
Closed
6

Liverpool FC vs. Nottingham Forest FC

Polymarket
⚽ Sports Closed
Outcome Draw
Volume $3.7M
7
Crystal Palace FC vs. Manchester City FC
Polymarket ⚽ Sports
Manchester City FC Outcome
$3.6M
Aug 28
Closed
7

Crystal Palace FC vs. Manchester City FC

Polymarket
⚽ Sports Closed
Outcome Manchester City FC
Volume $3.6M
8
Liverpool vs Nottingham
Kalshi ⚽ Sports
Tie Outcome
$3.6M
Aug 29
Closed
8

Liverpool vs Nottingham

Kalshi
⚽ Sports Closed
Outcome Tie
Volume $3.6M
9
Chicago vs Tennessee
Kalshi 🏈 Sports
Chicago Bears Outcome
$3.2M
Aug 29
Closed
9

Chicago vs Tennessee

Kalshi
🏈 Sports Closed
Outcome Chicago Bears
Volume $3.2M
10
North Carolina St. vs Virginia
Kalshi 🏈 Sports
Virginia Outcome
$3.0M
Aug 29
Closed
10

North Carolina St. vs Virginia

Kalshi
🏈 Sports Closed
Outcome Virginia
Volume $3.0M
11
Fery vs Buse
Kalshi 🎾 Sports
Ignacio Buse Outcome
$2.8M
Aug 29
Closed
11

Fery vs Buse

Kalshi
🎾 Sports Closed
Outcome Ignacio Buse
Volume $2.8M
12
Philadelphia vs Los Angeles A
Kalshi ⚾ Sports
Philadelphia Phillies 61%
$2.6M
$1.7M
Sep 1
Closing Soon
12

Philadelphia vs Los Angeles A

Kalshi
⚾ Sports Closing Soon
Philadelphia Phillies 61%
Los Angeles Angels 40%
Volume
$2.6M
Open Int.
$1.7M
Ends
Sep 1
13
Detroit vs Indianapolis
Kalshi 🏈 Sports
Detroit Lions Outcome
$2.6M
Aug 29
Closed
13

Detroit vs Indianapolis

Kalshi
🏈 Sports Closed
Outcome Detroit Lions
Volume $2.6M
14
Real Racing Club vs. Elche CF
Polymarket ⚽ Sports
Real Racing Club Outcome
$2.5M
Aug 28
Closed
14

Real Racing Club vs. Elche CF

Polymarket
⚽ Sports Closed
Outcome Real Racing Club
Volume $2.5M
15
TOUR Championship Winner
Kalshi ⛳ Sports
Viktor Hovland 39%
$2.5M
$12.7M
Sep 12
Active
15

TOUR Championship Winner

Kalshi
⛳ Sports Active
Viktor Hovland 39%
Scottie Scheffler 19%
Ryan Gerard 19%
Ludvig Åberg 8%
Chris Gotterup 7%
Adam Scott 5%
Rory McIlroy 3%
Cameron Young 2%
Sam Burns 1%
Wyndham Clark 1%
Ryan Fox 1%
Akshay Bhatia 1%
Collin Morikawa 1%
Russell Henley 1%
Gary Woodland 1%
Jacob Bridgeman 1%
Tom Kim 1%
Alex Fitzpatrick 1%
Min Woo Lee 1%
Justin Rose 1%
Patrick Cantlay 1%
Si Woo Kim 1%
Hideki Matsuyama 1%
Tommy Fleetwood 1%
Xander Schauffele 1%
Matt Fitzpatrick 1%
Alex Smalley 1%
Robert MacIntyre 1%
Kristoffer Reitan 1%
Volume
$2.5M
Open Int.
$12.7M
Ends
Sep 12
16
Fed Decision in September?
Polymarket 📊 Economics
Will there be no change in Fed interest rates after the September 2026 meeting 51%
$2.5M
$0
Sep 15
Active
16

Fed Decision in September?

Polymarket
📊 Economics Active
Will there be no change in Fed interest rates after the September 2026 meeting 51%
Will the Fed increase interest rates by 25 bps after the September 2026 meeting 47%
Will the Fed decrease interest rates by 25 bps after the September 2026 meeting 1%
Will the Fed increase interest rates by 50+ bps after the September 2026 meeting 1%
Will the Fed decrease interest rates by 50+ bps after the September 2026 meeting 1%
Volume
$2.5M
Open Int.
$0
Ends
Sep 15
17
Boston vs New York Y: Game 2
Kalshi ⚾ Sports
New York Yankees Outcome
$2.4M
Aug 29
Closed
17

Boston vs New York Y: Game 2

Kalshi
⚾ Sports Closed
Outcome New York Yankees
Volume $2.4M
18
Los Angeles D vs Detroit
Kalshi ⚾ Sports
Detroit Tigers Outcome
$2.2M
Aug 29
Closed
18

Los Angeles D vs Detroit

Kalshi
⚾ Sports Closed
Outcome Detroit Tigers
Volume $2.2M
19
FC Bayern München vs. VfB Stuttgart
Polymarket ⚽ Sports
FC Bayern München Outcome
$2.2M
Aug 28
Closed
19

FC Bayern München vs. VfB Stuttgart

Polymarket
⚽ Sports Closed
Outcome FC Bayern München
Volume $2.2M
20
Villanueva vs Aguilar Cardozo
Kalshi 🎾 Sports
Joaquin Aguilar Cardozo Outcome
$2.2M
Aug 29
Closed
20

Villanueva vs Aguilar Cardozo

Kalshi
🎾 Sports Closed
Outcome Joaquin Aguilar Cardozo
Volume $2.2M
21
Maute vs Cigarran
Kalshi 🎾 Sports
Jannik Maute Outcome
$2.2M
Aug 29
Closed
21

Maute vs Cigarran

Kalshi
🎾 Sports Closed
Outcome Jannik Maute
Volume $2.2M
22
Tottenham Hotspur FC vs. Newcastle United FC
Polymarket ⚽ Sports
Newcastle United FC Outcome
$2.2M
Aug 29
Closed
22

Tottenham Hotspur FC vs. Newcastle United FC

Polymarket
⚽ Sports Closed
Outcome Newcastle United FC
Volume $2.2M
23
Liverpool FC vs. Nottingham Forest FC - More Markets
Polymarket ⚽ Sports
Over Outcome
$2.0M
Aug 29
Closed
23

Liverpool FC vs. Nottingham Forest FC - More Markets

Polymarket
⚽ Sports Closed
Outcome Over
Volume $2.0M
24
Memphis vs UNLV: Spread
Kalshi 🏈 Sports
UNLV > 1.5 pts 69%
$1.9M
$2.2M
Aug 31
Closing Soon
24

Memphis vs UNLV: Spread

Kalshi
🏈 Sports Closing Soon
UNLV > 1.5 pts 69%
UNLV > 2.5 pts 67%
UNLV > 3.5 pts 54%
UNLV > 4.5 pts 50%
UNLV > 5.5 pts 49%
UNLV > 6.5 pts 46%
UNLV > 7.5 pts 34%
UNLV > 9.5 pts 29%
Memphis > 1.5 pts 27%
Memphis > 2.5 pts 26%
UNLV > 11.5 pts 23%
UNLV > 10.5 pts 22%
UNLV > 13.5 pts 19%
Memphis > 3.5 pts 18%
Memphis > 4.5 pts 16%
Memphis > 5.5 pts 14%
Memphis > 6.5 pts 13%
UNLV > 14.5 pts 13%
UNLV > 16.5 pts 12%
UNLV > 17.5 pts 10%
UNLV > 20.5 pts 7%
Memphis > 7.5 pts 7%
Memphis > 9.5 pts 6%
Memphis > 10.5 pts 5%
UNLV > 23.5 pts 4%
UNLV > 21.5 pts 4%
UNLV > 24.5 pts 3%
Memphis > 13.5 pts 2%
Memphis > 11.5 pts 2%
Memphis > 14.5 pts 1%
UNLV > 27.5 pts 1%
Volume
$1.9M
Open Int.
$2.2M
Ends
Aug 31
25
Mayo vs Andrade
Kalshi 🎾 Sports
Aidan Mayo Outcome
$1.9M
Aug 29
Closed
25

Mayo vs Andrade

Kalshi
🎾 Sports Closed
Outcome Aidan Mayo
Volume $1.9M
26
Counter-Strike: Natus Vincere vs paiN (BO3) - BLAST Open Porto Group A
Polymarket ⚽ Sports
Natus Vincere Outcome
$1.8M
Aug 28
Closed
26

Counter-Strike: Natus Vincere vs paiN (BO3) - BLAST Open Porto Group A

Polymarket
⚽ Sports Closed
Outcome Natus Vincere
Volume $1.8M
27
Colorado vs Atlanta
Kalshi ⚾ Sports
Atlanta Outcome
$1.8M
Aug 29
Closed
27

Colorado vs Atlanta

Kalshi
⚾ Sports Closed
Outcome Atlanta
Volume $1.8M
28
Tottenham Hotspur FC vs. Newcastle United FC - More Markets
Polymarket ⚽ Sports
Over Outcome
$1.8M
Aug 29
Closed
28

Tottenham Hotspur FC vs. Newcastle United FC - More Markets

Polymarket
⚽ Sports Closed
Outcome Over
Volume $1.8M
29
New Mexico St. vs Florida St.
Kalshi 🏈 Sports
Florida State Outcome
$1.8M
Aug 29
Closed
29

New Mexico St. vs Florida St.

Kalshi
🏈 Sports Closed
Outcome Florida State
Volume $1.8M
30
Chen vs Dellavedova
Kalshi 🎾 Sports
Matthew Dellavedova 69%
$1.8M
$1.2M
Sep 12
Active
30

Chen vs Dellavedova

Kalshi
🎾 Sports Active
Matthew Dellavedova 69%
Kuan-Shou Chen 31%
Volume
$1.8M
Open Int.
$1.2M
Ends
Sep 12
1
Who will win in the upcoming baseball event Chicago Cubs vs Arizona Diamondbacks scheduled for August 26, 2026 at 7:40 PM UTC?
Polymarket US ⚾ Sports
Arizona Diamondbacks Outcome
$20.5M
$285.9K
Aug 26
Closed
1

Who will win in the upcoming baseball event Chicago Cubs vs Arizona Diamondbacks scheduled for August 26, 2026 at 7:40 PM UTC?

Polymarket US
⚾ Sports Closed
Outcome Arizona Diamondbacks
Volume $20.5M
2
Who will win in the upcoming baseball event Los Angeles Dodgers vs Atlanta Braves scheduled for August 27, 2026 at 11:15 PM UTC?
Polymarket US ⚾ Sports
Atlanta Braves Outcome
$18.8M
$348.6K
Aug 27
Closed
2

Who will win in the upcoming baseball event Los Angeles Dodgers vs Atlanta Braves scheduled for August 27, 2026 at 11:15 PM UTC?

Polymarket US
⚾ Sports Closed
Outcome Atlanta Braves
Volume $18.8M
3
Fed Decision in September?
Polymarket 📊 Economics
Will there be no change in Fed interest rates after the September 2026 meeting 51%
$18.4M
$0
Sep 15
Active
3

Fed Decision in September?

Polymarket
📊 Economics Active
Will there be no change in Fed interest rates after the September 2026 meeting 51%
Will the Fed increase interest rates by 25 bps after the September 2026 meeting 47%
Will the Fed decrease interest rates by 25 bps after the September 2026 meeting 1%
Will the Fed increase interest rates by 50+ bps after the September 2026 meeting 1%
Will the Fed decrease interest rates by 50+ bps after the September 2026 meeting 1%
Volume
$18.4M
Open Int.
$0
Ends
Sep 15
4
Jacob Fearnley vs. Jurij Rodionov
Polymarket US 🎾 Sports
Jurij Rodionov Outcome
$14.7M
$59.0K
Aug 28
Closed
4

Jacob Fearnley vs. Jurij Rodionov

Polymarket US
🎾 Sports Closed
Outcome Jurij Rodionov
Volume $14.7M
5
Who will win in the upcoming baseball event Houston Astros vs New York Yankees scheduled for August 26, 2026 at 11:05 PM UTC?
Polymarket US ⚾ Sports
New York Yankees Outcome
$14.0M
$303.9K
Aug 26
Closed
5

Who will win in the upcoming baseball event Houston Astros vs New York Yankees scheduled for August 26, 2026 at 11:05 PM UTC?

Polymarket US
⚾ Sports Closed
Outcome New York Yankees
Volume $14.0M
6
Vilius Gaubas vs. Harry Wendelken
Polymarket US 🎾 Sports
Harry Wendelken Outcome
$12.7M
$57.7K
Aug 28
Closed
6

Vilius Gaubas vs. Harry Wendelken

Polymarket US
🎾 Sports Closed
Outcome Harry Wendelken
Volume $12.7M
7
Who will win in the upcoming baseball event Boston Red Sox vs Miami Marlins scheduled for August 26, 2026 at 10:40 PM UTC?
Polymarket US ⚾ Sports
Miami Marlins Outcome
$12.5M
$170.4K
Aug 26
Closed
7

Who will win in the upcoming baseball event Boston Red Sox vs Miami Marlins scheduled for August 26, 2026 at 10:40 PM UTC?

Polymarket US
⚾ Sports Closed
Outcome Miami Marlins
Volume $12.5M
8
TOUR Championship Winner
Kalshi ⛳ Sports
Viktor Hovland 39%
$12.2M
$51.0M
Sep 12
Active
8

TOUR Championship Winner

Kalshi
⛳ Sports Active
Viktor Hovland 39%
Scottie Scheffler 19%
Ryan Gerard 19%
Ludvig Åberg 8%
Chris Gotterup 7%
Adam Scott 5%
Rory McIlroy 3%
Cameron Young 2%
Sam Burns 1%
Wyndham Clark 1%
Ryan Fox 1%
Akshay Bhatia 1%
Collin Morikawa 1%
Russell Henley 1%
Gary Woodland 1%
Jacob Bridgeman 1%
Tom Kim 1%
Alex Fitzpatrick 1%
Min Woo Lee 1%
Justin Rose 1%
Patrick Cantlay 1%
Si Woo Kim 1%
Hideki Matsuyama 1%
Tommy Fleetwood 1%
Xander Schauffele 1%
Matt Fitzpatrick 1%
Alex Smalley 1%
Robert MacIntyre 1%
Kristoffer Reitan 1%
Volume
$12.2M
Open Int.
$51.0M
Ends
Sep 12
9
Houston Astros vs. New York Mets: Who will win in the upcoming baseball event Houston Astros vs New York Mets scheduled for August 29 2026 at 810 PM UTC
Polymarket US ⚾ Sports
New York Mets Outcome
$12.0M
$269.8K
Aug 29
Closed
9

Houston Astros vs. New York Mets: Who will win in the upcoming baseball event Houston Astros vs New York Mets scheduled for August 29 2026 at 810 PM UTC

Polymarket US
⚾ Sports Closed
Outcome New York Mets
Volume $12.0M
10
Who will win in the upcoming baseball event Philadelphia Phillies vs Seattle Mariners scheduled for August 25, 2026 at 1:40 AM UTC?
Polymarket US ⚾ Sports
Seattle Mariners Outcome
$11.4M
$300.0K
Aug 24
Closed
10

Who will win in the upcoming baseball event Philadelphia Phillies vs Seattle Mariners scheduled for August 25, 2026 at 1:40 AM UTC?

Polymarket US
⚾ Sports Closed
Outcome Seattle Mariners
Volume $11.4M
11
Who will win in the upcoming baseball event Los Angeles Dodgers vs Detroit Tigers scheduled for August 28, 2026 at 10:40 PM UTC?
Polymarket US ⚾ Sports
Los Angeles Dodgers Outcome
$10.8M
$133.8K
Aug 28
Closed
11

Who will win in the upcoming baseball event Los Angeles Dodgers vs Detroit Tigers scheduled for August 28, 2026 at 10:40 PM UTC?

Polymarket US
⚾ Sports Closed
Outcome Los Angeles Dodgers
Volume $10.8M
12
Who will win in the upcoming baseball event Milwaukee Brewers vs New York Mets scheduled for August 27, 2026 at 11:10 PM UTC?
Polymarket US ⚾ Sports
Milwaukee Brewers Outcome
$10.3M
$147.5K
Aug 27
Closed
12

Who will win in the upcoming baseball event Milwaukee Brewers vs New York Mets scheduled for August 27, 2026 at 11:10 PM UTC?

Polymarket US
⚾ Sports Closed
Outcome Milwaukee Brewers
Volume $10.3M
13
Qinwen Zheng vs. Elena Pridankina
Polymarket US 🎾 Sports
Qinwen Zheng Outcome
$10.1M
$62.6K
Aug 28
Closed
13

Qinwen Zheng vs. Elena Pridankina

Polymarket US
🎾 Sports Closed
Outcome Qinwen Zheng
Volume $10.1M
14
Dota 2: TEAM VISION vs Team Spirit (BO5) - The International Playoffs
Polymarket ⚽ Sports
Team Spirit Outcome
$10.0M
Aug 23
Closed
14

Dota 2: TEAM VISION vs Team Spirit (BO5) - The International Playoffs

Polymarket
⚽ Sports Closed
Outcome Team Spirit
Volume $10.0M
15
Who will win in the upcoming baseball event Chicago Cubs vs Seattle Mariners scheduled for August 23, 2026 at 8:10 PM UTC?
Polymarket US ⚾ Sports
Chicago Cubs Outcome
$9.6M
$98.8K
Aug 23
Closed
15

Who will win in the upcoming baseball event Chicago Cubs vs Seattle Mariners scheduled for August 23, 2026 at 8:10 PM UTC?

Polymarket US
⚾ Sports Closed
Outcome Chicago Cubs
Volume $9.6M
16
Who will win in the upcoming baseball event Boston Red Sox vs Miami Marlins scheduled for August 25, 2026 at 10:40 PM UTC?
Polymarket US ⚾ Sports
Boston Red Sox Outcome
$8.6M
$140.6K
Aug 25
Closed
16

Who will win in the upcoming baseball event Boston Red Sox vs Miami Marlins scheduled for August 25, 2026 at 10:40 PM UTC?

Polymarket US
⚾ Sports Closed
Outcome Boston Red Sox
Volume $8.6M
17
TOUR Championship End of Round 1 Leader: Min Woo Lee
Polymarket US ⛳ Sports
Min Woo Lee 83%
$8.5M
Aug 27
Closed
17

TOUR Championship End of Round 1 Leader: Min Woo Lee

Polymarket US
⛳ Sports Closed
Outcome
Volume $8.5M
18
What price will Bitcoin hit in August?
Polymarket ₿ Crypto
$77,500 67%
$7.9M
$0
Aug 31
Closing Soon
18

What price will Bitcoin hit in August?

Polymarket
₿ Crypto Closing Soon
$77,500 67%
$80,000 28%
$75,000 10%
$82,500 5%
$72,500 2%
$100,000 1%
$60,000 1%
$85,000 1%
$62,500 1%
$55,000 1%
$57,500 1%
$90,000 1%
$40,000 1%
$52,500 1%
$87,500 1%
$67,500 1%
$70,000 1%
$65,000 1%
$92,500 1%
$42,500 1%
$95,000 1%
Volume
$7.9M
Open Int.
$0
Ends
Aug 31
19
Brazil Presidential Election
Polymarket 🏛️ Politics
Luiz Inácio Lula da Silva 56%
$7.9M
$0
Oct 3
Active
19

Brazil Presidential Election

Polymarket
🏛️ Politics Active
Luiz Inácio Lula da Silva 56%
Flávio Bolsonaro 40%
Renan Santos 2%
Augusto Cury 2%
Pablo Marçal 1%
Romeu Zema 1%
Ronaldo Caiado 1%
Jair Bolsonaro 1%
Camilo Santana 1%
Fernando Haddad 1%
Geraldo Alckmin 1%
Michelle Bolsonaro 1%
Tereza Cristina 1%
Tarcisio de Freitas 1%
Volume
$7.9M
Open Int.
$0
Ends
Oct 3
20
Who will win in the upcoming baseball event Minnesota Twins vs San Diego Padres scheduled for August 23, 2026 at 8:10 PM UTC?
Polymarket US ⚾ Sports
San Diego Padres Outcome
$7.2M
$137.7K
Aug 23
Closed
20

Who will win in the upcoming baseball event Minnesota Twins vs San Diego Padres scheduled for August 23, 2026 at 8:10 PM UTC?

Polymarket US
⚾ Sports Closed
Outcome San Diego Padres
Volume $7.2M
21
Counter-Strike: Team Falcons vs Lynn Vision (BO3) - BLAST Open Porto Group B
Polymarket ⚽ Sports
Team Falcons Outcome
$6.8M
Aug 27
Closed
21

Counter-Strike: Team Falcons vs Lynn Vision (BO3) - BLAST Open Porto Group B

Polymarket
⚽ Sports Closed
Outcome Team Falcons
Volume $6.8M
22
Counter-Strike: Legacy vs FUT Esports (BO3) - BLAST Open Porto Group B
Polymarket ⚽ Sports
Legacy Outcome
$6.4M
Aug 27
Closed
22

Counter-Strike: Legacy vs FUT Esports (BO3) - BLAST Open Porto Group B

Polymarket
⚽ Sports Closed
Outcome Legacy
Volume $6.4M
23
Who will win in the upcoming baseball event Cleveland Guardians vs Los Angeles Angels scheduled for August 25, 2026 at 1:38 AM UTC?
Polymarket US ⚾ Sports
Cleveland Guardians Outcome
$6.3M
$131.5K
Aug 24
Closed
23

Who will win in the upcoming baseball event Cleveland Guardians vs Los Angeles Angels scheduled for August 25, 2026 at 1:38 AM UTC?

Polymarket US
⚾ Sports Closed
Outcome Cleveland Guardians
Volume $6.3M
24
Who will win in the upcoming baseball event Pittsburgh Pirates vs San Diego Padres scheduled for August 26, 2026 at 8:10 PM UTC?
Polymarket US ⚾ Sports
San Diego Padres Outcome
$6.3M
$97.4K
Aug 26
Closed
24

Who will win in the upcoming baseball event Pittsburgh Pirates vs San Diego Padres scheduled for August 26, 2026 at 8:10 PM UTC?

Polymarket US
⚾ Sports Closed
Outcome San Diego Padres
Volume $6.3M
25
Who will win in the upcoming baseball event Boston Red Sox vs Miami Marlins scheduled for August 24, 2026 at 10:40 PM UTC?
Polymarket US ⚾ Sports
Yes Outcome
$6.2M
$89.5K
Aug 24
Closed
25

Who will win in the upcoming baseball event Boston Red Sox vs Miami Marlins scheduled for August 24, 2026 at 10:40 PM UTC?

Polymarket US
⚾ Sports Closed
Outcome Yes
Volume $6.2M
26
Florida Governor Republican Primary: Fishback Vote Share: At Least 7%
Polymarket US 🏛️ Politics
At Least 7% 99%
$6.1M
Sep 1
Closed
26

Florida Governor Republican Primary: Fishback Vote Share: At Least 7%

Polymarket US
🏛️ Politics Closed
Outcome
Volume $6.1M
27
Who will win in the upcoming baseball event Cincinnati Reds vs San Francisco Giants scheduled for August 26, 2026 at 7:45 PM UTC?
Polymarket US ⚾ Sports
Cincinnati Reds Outcome
$6.0M
$95.6K
Aug 26
Closed
27

Who will win in the upcoming baseball event Cincinnati Reds vs San Francisco Giants scheduled for August 26, 2026 at 7:45 PM UTC?

Polymarket US
⚾ Sports Closed
Outcome Cincinnati Reds
Volume $6.0M
28
Who will win in the upcoming baseball event Pittsburgh Pirates vs San Diego Padres scheduled for August 25, 2026 at 1:40 AM UTC?
Polymarket US ⚾ Sports
Pittsburgh Pirates Outcome
$5.8M
$167.1K
Aug 24
Closed
28

Who will win in the upcoming baseball event Pittsburgh Pirates vs San Diego Padres scheduled for August 25, 2026 at 1:40 AM UTC?

Polymarket US
⚾ Sports Closed
Outcome Pittsburgh Pirates
Volume $5.8M
29
Real Madrid CF vs. Real Sociedad de Fútbol
Polymarket ⚽ Sports
Real Madrid CF Outcome
$5.7M
Aug 26
Closed
29

Real Madrid CF vs. Real Sociedad de Fútbol

Polymarket
⚽ Sports Closed
Outcome Real Madrid CF
Volume $5.7M
30
Who will win in the upcoming baseball event Tampa Bay Rays vs Detroit Tigers scheduled for August 24, 2026 at 10:40 PM UTC?
Polymarket US ⚾ Sports
Tampa Bay Rays Outcome
$5.7M
$94.8K
Aug 24
Closed
30

Who will win in the upcoming baseball event Tampa Bay Rays vs Detroit Tigers scheduled for August 24, 2026 at 10:40 PM UTC?

Polymarket US
⚾ Sports Closed
Outcome Tampa Bay Rays
Volume $5.7M
1
Alexander Zverev vs. Cameron Norrie
Polymarket US 🎾 Sports
Alexander Zverev Outcome
$120.0M
$602.2K
Aug 15
Closed
1

Alexander Zverev vs. Cameron Norrie

Polymarket US
🎾 Sports Closed
Outcome Alexander Zverev
Volume $120.0M
2
Who will win in the upcoming baseball event Los Angeles Dodgers vs Colorado Rockies scheduled for August 18, 2026 at 12:40 AM UTC?
Polymarket US ⚾ Sports
Los Angeles Dodgers Outcome
$106.2M
$390.6K
Aug 17
Closed
2

Who will win in the upcoming baseball event Los Angeles Dodgers vs Colorado Rockies scheduled for August 18, 2026 at 12:40 AM UTC?

Polymarket US
⚾ Sports Closed
Outcome Los Angeles Dodgers
Volume $106.2M
3
Who will win in the upcoming baseball event Detroit Tigers vs Pittsburgh Pirates scheduled for August 17, 2026 at 11:05 PM UTC?
Polymarket US ⚾ Sports
Detroit Tigers Outcome
$94.4M
$787.5K
Aug 17
Closed
3

Who will win in the upcoming baseball event Detroit Tigers vs Pittsburgh Pirates scheduled for August 17, 2026 at 11:05 PM UTC?

Polymarket US
⚾ Sports Closed
Outcome Detroit Tigers
Volume $94.4M
4
Who will win in the upcoming baseball event Chicago Cubs vs Washington Nationals scheduled for August 11, 2026 at 10:45 PM UTC?
Polymarket US ⚾ Sports
Chicago Cubs Outcome
$86.3M
$529.6K
Aug 11
Closed
4

Who will win in the upcoming baseball event Chicago Cubs vs Washington Nationals scheduled for August 11, 2026 at 10:45 PM UTC?

Polymarket US
⚾ Sports Closed
Outcome Chicago Cubs
Volume $86.3M
5
Rinky Hijikata vs. Gael Monfils
Polymarket US 🎾 Sports
Rinky Hijikata Outcome
$82.8M
$422.5K
Aug 13
Closed
5

Rinky Hijikata vs. Gael Monfils

Polymarket US
🎾 Sports Closed
Outcome Rinky Hijikata
Volume $82.8M
6
Naomi Osaka vs. Elena Rybakina
Polymarket US 🎾 Sports
Elena Rybakina Outcome
$63.3M
$358.1K
Aug 11
Closed
6

Naomi Osaka vs. Elena Rybakina

Polymarket US
🎾 Sports Closed
Outcome Elena Rybakina
Volume $63.3M
7
Fed Decision in September?
Polymarket 📊 Economics
Will there be no change in Fed interest rates after the September 2026 meeting 51%
$60.3M
$0
Sep 15
Active
7

Fed Decision in September?

Polymarket
📊 Economics Active
Will there be no change in Fed interest rates after the September 2026 meeting 51%
Will the Fed increase interest rates by 25 bps after the September 2026 meeting 47%
Will the Fed decrease interest rates by 25 bps after the September 2026 meeting 1%
Will the Fed increase interest rates by 50+ bps after the September 2026 meeting 1%
Will the Fed decrease interest rates by 50+ bps after the September 2026 meeting 1%
Volume
$60.3M
Open Int.
$0
Ends
Sep 15
8
Who will win in the upcoming baseball event Seattle Mariners vs New York Yankees scheduled for August 11, 2026 at 11:05 PM UTC?
Polymarket US ⚾ Sports
New York Yankees Outcome
$51.4M
$490.6K
Aug 11
Closed
8

Who will win in the upcoming baseball event Seattle Mariners vs New York Yankees scheduled for August 11, 2026 at 11:05 PM UTC?

Polymarket US
⚾ Sports Closed
Outcome New York Yankees
Volume $51.4M
9
Who will win in the upcoming baseball event Atlanta Braves vs Minnesota Twins scheduled for August 17, 2026 at 11:40 PM UTC?
Polymarket US ⚾ Sports
Minnesota Twins Outcome
$49.9M
$802.1K
Aug 17
Closed
9

Who will win in the upcoming baseball event Atlanta Braves vs Minnesota Twins scheduled for August 17, 2026 at 11:40 PM UTC?

Polymarket US
⚾ Sports Closed
Outcome Minnesota Twins
Volume $49.9M
10
Who will win in the upcoming baseball event Boston Red Sox vs Toronto Blue Jays scheduled for August 11, 2026 at 11:07 PM UTC?
Polymarket US ⚾ Sports
Toronto Blue Jays Outcome
$44.7M
$576.6K
Aug 11
Closed
10

Who will win in the upcoming baseball event Boston Red Sox vs Toronto Blue Jays scheduled for August 11, 2026 at 11:07 PM UTC?

Polymarket US
⚾ Sports Closed
Outcome Toronto Blue Jays
Volume $44.7M
11
Who will win in the upcoming baseball event Boston Red Sox vs Toronto Blue Jays scheduled for August 13, 2026 at 7:07 PM UTC?
Polymarket US ⚾ Sports
Boston Red Sox Outcome
$41.3M
$403.0K
Aug 13
Closed
11

Who will win in the upcoming baseball event Boston Red Sox vs Toronto Blue Jays scheduled for August 13, 2026 at 7:07 PM UTC?

Polymarket US
⚾ Sports Closed
Outcome Boston Red Sox
Volume $41.3M
12
Who will win in the upcoming baseball event Boston Red Sox vs Pittsburgh Pirates scheduled for August 16, 2026 at 5:35 PM UTC?
Polymarket US ⚾ Sports
Pittsburgh Pirates Outcome
$39.7M
$559.7K
Aug 16
Closed
12

Who will win in the upcoming baseball event Boston Red Sox vs Pittsburgh Pirates scheduled for August 16, 2026 at 5:35 PM UTC?

Polymarket US
⚾ Sports Closed
Outcome Pittsburgh Pirates
Volume $39.7M
13
Who will win in the upcoming baseball event Chicago White Sox vs Chicago Cubs scheduled for August 18, 2026 at 12:05 AM UTC?
Polymarket US ⚾ Sports
Chicago Cubs Outcome
$39.1M
$615.7K
Aug 17
Closed
13

Who will win in the upcoming baseball event Chicago White Sox vs Chicago Cubs scheduled for August 18, 2026 at 12:05 AM UTC?

Polymarket US
⚾ Sports Closed
Outcome Chicago Cubs
Volume $39.1M
14
Who will win in the upcoming football event Arizona Cardinals vs Las Vegas Raiders scheduled for August 14, 2026 at 12:00 AM UTC?
Polymarket US 🏈 Sports
Cardinals Outcome
$32.3M
$222.9K
Aug 13
Closed
14

Who will win in the upcoming football event Arizona Cardinals vs Las Vegas Raiders scheduled for August 14, 2026 at 12:00 AM UTC?

Polymarket US
🏈 Sports Closed
Outcome Cardinals
Volume $32.3M
15
Who will win in the upcoming baseball event Philadelphia Phillies vs St. Louis Cardinals scheduled for August 11, 2026 at 11:45 PM UTC?
Polymarket US ⚾ Sports
St. Louis Cardinals Outcome
$30.0M
$326.7K
Aug 11
Closed
15

Who will win in the upcoming baseball event Philadelphia Phillies vs St. Louis Cardinals scheduled for August 11, 2026 at 11:45 PM UTC?

Polymarket US
⚾ Sports Closed
Outcome St. Louis Cardinals
Volume $30.0M
16
BMW Championship Winner: Wyndham Clark
Polymarket US ⛳ Sports
Wyndham Clark 58%
$29.4M
Aug 23
Closed
16

BMW Championship Winner: Wyndham Clark

Polymarket US
⛳ Sports Closed
Outcome
Volume $29.4M
17
Who will win in the upcoming mma event Anthony Hernandez vs Gregory Rodrigues scheduled for August 22, 2026 at 8:00 PM UTC?
Polymarket US 🥊 Sports
Gregory Rodrigues Outcome
$27.7M
$405.0K
Aug 22
Closed
17

Who will win in the upcoming mma event Anthony Hernandez vs Gregory Rodrigues scheduled for August 22, 2026 at 8:00 PM UTC?

Polymarket US
🥊 Sports Closed
Outcome Gregory Rodrigues
Volume $27.7M
18
Who will win in the upcoming baseball event Milwaukee Brewers vs Los Angeles Dodgers scheduled for August 14, 2026 at 2:10 AM UTC?
Polymarket US ⚾ Sports
Milwaukee Brewers Outcome
$26.8M
$482.9K
Aug 13
Closed
18

Who will win in the upcoming baseball event Milwaukee Brewers vs Los Angeles Dodgers scheduled for August 14, 2026 at 2:10 AM UTC?

Polymarket US
⚾ Sports Closed
Outcome Milwaukee Brewers
Volume $26.8M
19
Who will win in the upcoming football event Tennessee Titans vs San Francisco 49ers scheduled for August 14, 2026 at 1:00 AM UTC?
Polymarket US 🏈 Sports
Titans Outcome
$26.0M
$176.8K
Aug 13
Closed
19

Who will win in the upcoming football event Tennessee Titans vs San Francisco 49ers scheduled for August 14, 2026 at 1:00 AM UTC?

Polymarket US
🏈 Sports Closed
Outcome Titans
Volume $26.0M
20
Who will win in the upcoming football event Los Angeles Chargers vs Houston Texans scheduled for August 14, 2026 at 12:00 AM UTC?
Polymarket US 🏈 Sports
Chargers Outcome
$24.2M
$137.0K
Aug 13
Closed
20

Who will win in the upcoming football event Los Angeles Chargers vs Houston Texans scheduled for August 14, 2026 at 12:00 AM UTC?

Polymarket US
🏈 Sports Closed
Outcome Chargers
Volume $24.2M
21
Who will win in the upcoming baseball event St. Louis Cardinals vs Chicago Cubs scheduled for August 16, 2026 at 7:15 PM UTC?
Polymarket US ⚾ Sports
St. Louis Cardinals Outcome
$24.2M
$290.0K
Aug 16
Closed
21

Who will win in the upcoming baseball event St. Louis Cardinals vs Chicago Cubs scheduled for August 16, 2026 at 7:15 PM UTC?

Polymarket US
⚾ Sports Closed
Outcome St. Louis Cardinals
Volume $24.2M
22
Katie Boulter vs. Katie Volynets
Polymarket US 🎾 Sports
Katie Boulter Outcome
$23.6M
$226.0K
Aug 13
Closed
22

Katie Boulter vs. Katie Volynets

Polymarket US
🎾 Sports Closed
Outcome Katie Boulter
Volume $23.6M
23
Who will win in the upcoming baseball event Atlanta Braves vs Minnesota Twins scheduled for August 18, 2026 at 11:40 PM UTC?
Polymarket US ⚾ Sports
Minnesota Twins Outcome
$22.5M
$406.5K
Aug 18
Closed
23

Who will win in the upcoming baseball event Atlanta Braves vs Minnesota Twins scheduled for August 18, 2026 at 11:40 PM UTC?

Polymarket US
⚾ Sports Closed
Outcome Minnesota Twins
Volume $22.5M
24
Brazil Presidential Election
Polymarket 🏛️ Politics
Luiz Inácio Lula da Silva 56%
$22.5M
$0
Oct 3
Active
24

Brazil Presidential Election

Polymarket
🏛️ Politics Active
Luiz Inácio Lula da Silva 56%
Flávio Bolsonaro 40%
Renan Santos 2%
Augusto Cury 2%
Pablo Marçal 1%
Romeu Zema 1%
Ronaldo Caiado 1%
Jair Bolsonaro 1%
Camilo Santana 1%
Fernando Haddad 1%
Geraldo Alckmin 1%
Michelle Bolsonaro 1%
Tereza Cristina 1%
Tarcisio de Freitas 1%
Volume
$22.5M
Open Int.
$0
Ends
Oct 3
25
Who will win in the upcoming baseball event Baltimore Orioles vs Minnesota Twins scheduled for August 11, 2026 at 11:40 PM UTC?
Polymarket US ⚾ Sports
Baltimore Orioles Outcome
$21.6M
$150.4K
Aug 11
Closed
25

Who will win in the upcoming baseball event Baltimore Orioles vs Minnesota Twins scheduled for August 11, 2026 at 11:40 PM UTC?

Polymarket US
⚾ Sports Closed
Outcome Baltimore Orioles
Volume $21.6M
26
Who will win in the upcoming baseball event Chicago Cubs vs Arizona Diamondbacks scheduled for August 26, 2026 at 7:40 PM UTC?
Polymarket US ⚾ Sports
Arizona Diamondbacks Outcome
$20.5M
$285.9K
Aug 26
Closed
26

Who will win in the upcoming baseball event Chicago Cubs vs Arizona Diamondbacks scheduled for August 26, 2026 at 7:40 PM UTC?

Polymarket US
⚾ Sports Closed
Outcome Arizona Diamondbacks
Volume $20.5M
27
Diana Shnaider vs. Maja Chwalinska
Polymarket US 🎾 Sports
Diana Shnaider Outcome
$20.2M
$130.7K
Aug 17
Closed
27

Diana Shnaider vs. Maja Chwalinska

Polymarket US
🎾 Sports Closed
Outcome Diana Shnaider
Volume $20.2M
28
Presidential Election Winner 2028
Polymarket 🏛️ Politics
JD Vance 25%
$20.0M
$0
Nov 6
Active
28

Presidential Election Winner 2028

Polymarket
🏛️ Politics Active
JD Vance 25%
Marco Rubio 11%
Jon Ossoff 11%
Alexandria Ocasio-Cortez 10%
Gavin Newsom 7%
Kamala Harris 4%
Josh Shapiro 3%
Donald Trump 2%
Mark Kelly 2%
Pete Buttigieg 2%
Pete Hegseth 1%
Tom Cotton 1%
Josh Stein 1%
Adam Schiff 1%
Raphael Warnock 1%
Thomas Massie 1%
Zohran Mamdani 1%
Tucker Carlson 1%
Kim Kardashian 1%
James Talarico 1%
Jalen Brunson 1%
JB Pritzker 1%
Wes Moore 1%
Jamie Dimon 1%
Ron DeSantis 1%
Vivek Ramaswamy 1%
Elissa Slotkin 1%
Andy Beshear 1%
Ivanka Trump 1%
Elon Musk 1%
Eric Trump 1%
Doug Burgum 1%
Tim Scott 1%
Tulsi Gabbard 1%
Tim Walz 1%
Rick Scott 1%
John N. Kennedy 1%
Ro Khanna 1%
Gretchen Whitmer 1%
Dwayne 'The Rock' Johnson 1%
Greg Abbott 1%
Michelle Obama 1%
Glenn Youngkin 1%
Donald Trump Jr. 1%
Stephen Smith 1%
LeBron James 1%
Nikki Haley 1%
Volume
$20.0M
Open Int.
$0
Ends
Nov 6
29
Florida Governor Republican Primary Winner: Byron Donalds
Polymarket US 🏛️ Politics
Byron Donalds 99%
$19.9M
Sep 1
Closed
29

Florida Governor Republican Primary Winner: Byron Donalds

Polymarket US
🏛️ Politics Closed
Outcome
Volume $19.9M
30
Who will win in the upcoming baseball event Los Angeles Dodgers vs Atlanta Braves scheduled for August 27, 2026 at 11:15 PM UTC?
Polymarket US ⚾ Sports
Atlanta Braves Outcome
$18.8M
$348.6K
Aug 27
Closed
30

Who will win in the upcoming baseball event Los Angeles Dodgers vs Atlanta Braves scheduled for August 27, 2026 at 11:15 PM UTC?

Polymarket US
⚾ Sports Closed
Outcome Atlanta Braves
Volume $18.8M

How 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.