Kalshi raised a $300M+ Series D at a $5B valuation, expands to 140 countries, and is on track for $50B in annualized trading volume, up from $300M in 2024 (Michael J. de la Merced/New York Times)

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Michael J. de la Merced / New York Times:Kalshi raised a $300M+ Series D at a $5B valuation, expands to 140 countries, and is on track for $50B in annualized trading volume, up from $300M in 2024  —  The fund-raising round comes as online prediction marketplaces gain mainstream prominence.  —  Online prediction markets have jumped …