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<p><strong>Polymarket's</strong> World Cup winner market has drawn $2 billion in lifetime bets, while rival <strong>Kalshi</strong> spreads the same wager across 48 smaller books and pockets most of the fees.</p>
<h2 id="key-points">Key Points:</h2>
<blockquote>
 <ul>
  <li>Polymarket's single World Cup winner market holds $2 billion in volume, set against Kalshi's spread of 48 separate books.</li>
  <li><a href="https://yellow.com/news/how-prediction-markets-are-becoming-the-next-derivatives-and-insurance-layer" rel="noopener noreferrer nofollow">Prediction markets</a> cleared a record $31.2 billion in May, with Kalshi taking 58% of the flow.</li>
  <li>Kalshi booked $137.86 million in May fees, nearly five times what Polymarket earned.</li>
 </ul>
</blockquote>
<h2 id="polymarket-pools-world-cup-cash">Polymarket Pools World Cup Cash</h2>
<p>Traders have <a href="https://beincrypto.com/fifa-world-cup-predictions-money-flow-analysis/" rel="noopener noreferrer nofollow">funneled</a> $2 billion into Polymarket's tournament winner market, which carried $436 million in standing liquidity and turned over $137 million last Thursday, figures <a href="https://finance.yahoo.com/markets/crypto/articles/polymarket-vs-kalshi-where-fans-160253815.html" rel="noopener noreferrer nofollow">reported</a> this week show. The platform's wider World Cup section now spans more than 330 active markets, and Thursday's flow alone nearly matched Kalshi's biggest book over its lifetime.</p>
<p>Kalshi runs the same event very differently. It has gathered $182.3 million across 48 separate contracts, and on the largest listed events Polymarket's lead stretches close to 11 to one. Both venues <a href="https://cryptonews.net/news/other/32995716/" rel="noopener noreferrer nofollow">priced</a> the football alike, with Spain the favorite at 17% and matching 5.56 times payouts on the leaders.</p>
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<h2 id="kalshi-banks-the-bigger-fees">Kalshi Banks The Bigger Fees</h2>
<p>Polymarket wins the headline number, yet Kalshi quietly wins the money that matters. The regulated platform took 58% of the sector's record $31.2 billion in May, against Polymarket's 28%, pushing industry open interest to $1.3 billion.</p>
<p>Sports trading drove $10.44 billion of that flow, roughly 60 times what Kalshi's famous elections markets managed, while crypto added $2.02 billion. Fees tell the sharper story. Kalshi booked $137.86 million in May, against Polymarket's $28.07 million, a revenue gap of nearly five to one.</p>
<p>So the contest is breadth against depth, with Kalshi scattering cash over dozens of match-level books while Polymarket pools it in one giant tournament market. Outside analysts <a href="https://www.theblock.co/post/404403/bernstein-calls-fifa-world-cup-a-watershed-moment-for-prediction-markets-projects-5-10b-consumer-volume-surge" rel="noopener noreferrer nofollow">projected</a> a $5 billion to $10 billion jump in consumer volume from the event, calling it a watershed for the young prediction sector.</p>
<h2 id="world-cup-reshapes-prediction-bets">World Cup Reshapes Prediction Bets</h2>
<p>The football boom is not a passing tournament spike. Sports topped every category on Polymarket through 2026, claiming $6.20 billion of January's $14.34 billion before peaking in March at $8.77 billion of a record $19.58 billion month.</p>
<p>By this month total volume had slid about 70% to $5.91 billion, yet the sports share still climbed to 56.5%.</p>
<p>The shift runs deeper than one platform. Smaller venue <strong>Opinion</strong> saw sports swell to 99.4% of its activity by early June, while crypto bets there fell below $500,000. Crypto had led that same venue in January, when it cleared $729.52 million in a single week.</p>
<p>A year ago, elections and coin prices <a href="https://thedefiant.io/news/defi/polymarket-world-cup-winner-markets-1-8b-volume-france-spain" rel="noopener noreferrer nofollow">carried</a> these markets. The World Cup did not just lift prediction trading, it replaced the very categories that built it.</p>
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Polymarket Corners The World Cup Bet While Kalshi Quietly Wins Fees

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Other articles published on Jun 13, 2026

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