Kalshi and Polymarket: A Battle at the Top
This week’s figures, compiled by analyst @Prithvir12, speak for themselves: Kalshi and Polymarket are crushing the competition, with nearly 5 million transactions each. Kalshi, in particular, is impressive, accounting alone for over 50% of the sector’s total open interest, which stands at $706 million. This dominance is explained by its status as a regulated platform in the United States (by the CFTC) and the diversity of its markets, ranging from politics to weather.
Polymarket, meanwhile, remains the king of the crypto and DeFi arena, with a massive user base of 248,000 people. The overall 7% growth in users across all platforms shows that the mainstream public is beginning to adopt these tools.
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Events That Will Reshape the Landscape
Beyond the numbers, three major announcements marked the week:
- A Powerhouse Hire for Kalshi: The arrival of Elisabeth Diana, formerly of Meta, as head of communications at Kalshi is no coincidence. It’s a strong signal of the platform’s ambition to establish itself in the public debate, just as it expands its offering to sports and pop culture.
- Leverage Arrives in Prediction Markets: Startup Gondor raised $2.5 million to build a DeFi layer on prediction markets. Starting next week, it will be possible to borrow against positions on Polymarket with 2x leverage. This is a real game changer that could multiply volumes, but also the risks.
- Bitcoin at $100,000? Traders Believe It: Kalshi markets are giving a 40% probability to Bitcoin reaching $100,000 by year end. This optimism, shared by many traders, shows how much these platforms have become a leading indicator of market sentiment.
Check out our article on the top 5 bets on Polymarket: TOP 5 Bets on Polymarket.
Toward an Explosion in 2026?
This week confirms it: prediction markets are no longer just a gimmick. They have become a “truth serum” for assessing the probabilities of future events, often outperforming traditional polls. With a leader like Kalshi gaining structure, and the arrival of innovations like leverage, the ecosystem is ready for a new acceleration phase. If the trend continues, open interest could well exceed one billion dollars by mid-2026.
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