The largest crash on Polymarket: a trader lost $5.8 million in 24 hours and entered the top 3 of the anti-ranking.
Decentralized prediction platforms continue to deliver surprises, and not always pleasant ones. A high-profile addition has been made to Polymarket's list of the most losing users in the platform's history. An investor under the pseudonym supersob lost nearly $5.8 million in just a few hours, instantly jumping to third place on the anti-ranking.
The main blow came from bets within the group stage of the 2026 FIFA World Cup. The trader placed several large wagers simultaneously, which proved fatal. The most devastating was the prediction for Belgium's victory over Iran. The match ended in a goalless draw, turning the invested $3.1 million into a loss of $3.12 million — a total loss of capital due to the mechanics of markets with a range from $0 to $1.
Equally painful was the bet against Norway in the match against Senegal. The Norwegians secured a convincing 3:2 victory, costing the trader another $2.67 million in losses. An additional bet on a draw in the same match added $1.15 million to the losses. The string of failures was capped off by a prediction on the Asian handicap for Iraq in the game against France — the French won 3:0, and another $1.53 million vanished from the account.
Statistics that speak for themselves
At the time of writing this analysis, the total negative balance of the supersob account stands at approximately $6.86 million, with a total trading volume of $16.73 million. The net return is minus 41%, and the prediction accuracy (win rate) is only 25%. Out of twelve major predictions, only three turned out to be correct. Notably, until the fateful day, the trader's profit chart was steadily growing, reaching a peak of plus $4 million. However, within a few hours on June 23, everything fell apart.
Currently, supersob ranks third on the list of Polymarket's biggest losers, trailing only the profiles 10xBTClong (losses of about $10 million) and jdsahgf (minus $7.2 million). Slightly below are theRealTaylorSwift ($6.8 million), tubeyou ($5.5 million), and anoin123 ($5.4 million).
My comment as an analyst: This case is a clear demonstration that even on decentralized platforms with mathematical probability of outcomes, large positions with incorrect analysis lead to disaster. Polymarket does not forgive mistakes: the losing side loses all the funds deposited. Risk management here is not just a recommendation, but the only way to survive. supersob, who risked millions of dollars, became a victim of his own overconfidence and lack of diversification. The prediction market is not a casino, but without discipline, it turns into one.