Chart of the Day: Why Almost Everyone Loses

Today's Chart of the Day from The Wall Street Journal article "Why Almost Everyone Loses—Except a Few Sharks—on Prediction Markets" explores what separates successful bettors from the rest on Polymarket.

Polymarket is one of the most prominent prediction markets, allowing users to wager on the outcomes of virtually any verifiable event, from elections and sporting events to weather forecasts and current affairs. Its broad range of markets attracts many participants who believe they can capitalize on their knowledge or intuition, but the data paints a starkly different picture.

More than half of all Polymarket accounts are unprofitable, while fewer than 1% of users capture nearly 70% of all profits. This imbalance underscores just how difficult it is to consistently predict real-world events.

In practice, the biggest winners tend to be a small group of highly sophisticated traders equipped with superior data, analytical tools, and resources, leaving the majority of participants on the losing side of the market.