They Looked Like They Were Getting Rich on Polymarket–But None of It Was Real
Polymarket, a prediction market platform, was found to have featured accounts that appeared to be earning large sums of money from bets, but these gains were later revealed to be fake or based on unrealized trades, raising concerns about the authenticity of displayed profits and the platform's transparency.
Background
- Polymarket is a crypto-based prediction market where users bet real money on the outcome of real-world events (e.g., elections, sports, weather). It exploded in popularity during the 2024 U.S. election cycle.
- This WSJ article reports that a number of high-profile Polymarket accounts that appeared to be hugely profitable were actually "paper trading" — placing bets with fake money in a practice environment — and then posting those fake gains on social media to look like successful traders.
- The practice exploits a loophole in Polymarket's design: the platform has a "demo mode" for testing, but there is no clear label or indicator distinguishing demo accounts from real-money accounts. This allows users to manufacture credibility and potentially manipulate public perception of which outcomes are "likely."
- The incident raises questions about the integrity of prediction markets as information sources, since fake activity can distort the signals they are supposed to provide. It also echoes earlier controversies around crypto "whales" whose influence turned out to be fabricated.