Fantasy Sports Betting Startup Underdog Surpasses $1 Billion Valuation

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Kate Marshal

31 March 2025

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Underdog

The market value of U.S.-based fantasy sports startup Underdog has surpassed $1 billion, according to the company’s press release.

Following its latest funding round, the company announced its valuation now stands at $1.2 billion — triple what it was in 2022.

The latest round was led by U.S. venture capital firm Spark Capital, which invested $70 million into the startup.

“This investment fits Spark’s philosophy of backing products we love from creators we admire,” said Will Reed, general partner at Spark Capital.

For context: founded in 2020, Underdog is now the fourth most popular sports app in the U.S., with an estimated 4 million users nationwide.

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Kate Marshal

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Bookmaker & Casino Reviewer | Former Professional Croupier | Industry Rankings & Insights | Since 2014.

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