NYT > U.S. News What Are Kalshi and Polymarket? Par : Lauren McCarthy 11 septembre 2026 à 10:35 Prediction markets have taken off in popularity, drawing billions of dollars in trades. Some states have tried to ban them. © Karsten Moran for The New York TimesAn ad for Kalshi in 2024. The huge popularity of Kalshi and Polymarket has raised fears about how susceptible they are to manipulation by those with insider information.
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