A bet against Spain on Polymarket earned a trader $4.7 million: case analysis
An impressive result has been recorded on the decentralized prediction platform Polymarket: a trader under the pseudonym fishalive turned $400,000 into $4.7 million by betting that the Spanish national team would not beat Cape Verde in a group stage match of the 2026 FIFA World Cup.
Trade Mechanics and Odds
The key point — fishalive entered the position at an extremely low quote of 9%. This means the market estimated Spain's probability of winning at 91%, and the trader went against the consensus. The match ultimately ended in a 0:0 draw, and the bet paid out in full. With a multiplier of 11.75x, the net profit amounted to approximately $4.3 million.
Match Context
Spain dominated statistically: 75% ball possession and 27 shots on goal. However, Cape Verde, playing its debut match at the World Cup, demonstrated exemplary defensive discipline. The draw came as a shock to bookmakers and analysts, but not to fishalive, who clearly considered not only the statistics but also the psychological factor of the debut.
Expert Opinion
This case clearly demonstrates that on Polymarket, success is determined not just by luck, but by a deep understanding of market imbalances. Betting against a favorite with a 9% probability is a classic example of value betting, where the trader exploits an overestimated market assessment. However, it is worth remembering that such trades require a high tolerance for risk: a similar bet with a 91% probability of loss could have wiped out the deposit. In the long term, systematically hunting for such anomalies is one of the few ways to achieve consistent profits in crypto prediction markets.