How A Trader Lost $2 Million on Polymarket: 5 Mistakes You Need to Stop Making

A trader named beachboy4 lost over $2 million on Polymarket in just over a month, with a single $1.58 million loss on a Liverpool bet being the largest contributor. Despite having a 51% win rate across 53 predictions, the trader consistently made critical errors, primarily by treating the probability-based Polymarket like a binary sports book. This involved buying positions at high entry prices (between $0.51 and $0.67), which offered limited upside (50%-90%) but 100% downside risk—described as the "worst payoff structure." Furthermore, the trader failed to implement basic risk management, such as setting early exits or stop-losses, allowing losing positions to run to zero. Lookonchain highlighted five key mistakes to avoid: avoiding high-price entries (above 0.55), enforcing strict position sizing (3%-5% of capital per event), managing positions dynamically, comparing win rates to break-even levels, and removing consistently unprofitable markets.

(Source：BeInCrypto)