Volume Report

Volume Report

2026 PGA Championship Volume Tops $365M at Kalshi as Aaron Rai Defies Odds

Kalshi’s markets for the 2026 PGA Championship topped $365.2 million in volume across all categories, with $9.8 million of that coming from combos or parlays, according to DeFi...

Derek Helling

May 18, 2026

Kalshi volume holds as transactions drop

Volume Report

Kalshi Volume Levels Off at $3.86B as Transactions Drop 46% and Polymarket Bounces Back

Kalshi notional volume dipped 6.6% week-over-week to $3.86B for the week beginning May 11, a much softer decline than the transaction count suggests. Trades fell 46.4% to 13.0M, pointing to...

Valerie Cross

May 18, 2026

Volume Report

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,...

Cheryle Shepstone

May 10, 2026

Volume Report

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...

Valerie Cross

May 1, 2026

Kalshi dips to 3.0B after masters in volume

Volume Report

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...

Valerie Cross

April 20, 2026

Volume Report

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...

Valerie Cross

April 13, 2026

Kalshi and Polymarket trends and diverging paths

Data

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...

Valerie Cross

April 6, 2026

Kalshi Polymarket all time high volume march

Volume Report

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...

Valerie Cross

March 30, 2026

Kalshi and Polymarket surge on march madness

Data

Kalshi Hits Record $3.4B Week with March Madness as Polymarket Tallies $2.5B

Kalshi posted a new record $3.40 billion notional volume week as Polymarket's sports volume surged 32% week over week with NCAA basketball tournaments in full...

Valerie Cross

March 23, 2026

Data

Kalshi Posts Record $2.9B Week on NCAA Basketball Tournaments as Polymarket Dips

Kalshi posted a new volume record for the week of March 9-15, surging to $2.9B on the back of NCAAB conference tournaments. Meanwhile, Polymarket dipped 6% ahead of the March fed...

Valerie Cross

March 16, 2026

1 2 3