Only 3% of traders drive prediction markets' accuracy, not the crowd
6 hours ago
- #Trading Analysis
- #Financial Research
- #Prediction Markets
- A study analyzing every Polymarket trade from 2023 to 2025 reveals that about 3% of traders account for most price discovery, contradicting the 'wisdom of the crowd' idea in prediction markets.
- Researchers used coin-flip simulations to distinguish skill from luck, finding only 12% of top winners by raw profit consistently outperformed chance, and about 60% of 'lucky winners' became losers when tested on separate events.
- Skilled traders move prices toward correct outcomes, especially close to resolution, and react quickly to new information like Fed announcements, while the remaining 97% provide liquidity but lose money in aggregate.
- The study highlights insider trading risks with a case of large bets before a U.S. raid in Venezuela, noting such trades are rare but impact prices significantly, though daily market accuracy relies more on consistent skilled traders.
- The findings suggest prediction markets' accuracy depends on a small group of informed traders, not broad participation, and challenge core industry claims about crowd-based knowledge.