Mystery Polymarket trader turned $4 million into $9 million after Spain's shocking World Cup draw

A mysterious trader on the Polymarket platform turned a $4 million investment into a $9 million profit by betting against Spain in a World Cup match. The event highlights the high-stakes nature of crypto-based prediction markets and the lack of traditional regulatory oversight.
Why it matters
It illustrates the growing influence and volatility of decentralized prediction markets and the risks associated with unregulated crypto-betting platforms.
The result produced two of the most extreme outcomes crypto-based predictions platform Polymarket has seen this tournament. A brand-new wallet turned about $4 million into a profit of more than $9 million in a few hours, Polymarket data reviewed by CoinDesk shows. Meanwhile, another trader lost close to $1 million in a trade that would net just $85,000.
The article reports on the financial outcome and the platform's mechanics objectively, noting both the success and the criticism regarding regulation.
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