Only a Small Fraction of Traders Influence Prediction Market Prices
- A study analyzed over 1.72 million accounts and $13.76 billion in trading volume on Polymarket.
- Only 3% of traders are responsible for most price discovery, while the remaining 97% generally lose money.
- Among top winners, only 12% consistently outperform a benchmark based on random chance.
- Insider trades can move prices significantly more than skilled trades, with effects estimated at seven-to-twelve times greater.
- In one instance, three new accounts made over $630,000 betting on the removal of Nicolás Maduro shortly before it occurred.
The findings challenge the notion that prediction markets rely on collective knowledge, highlighting instead that informed traders drive market accuracy and profitability. The study raises concerns about the implications of non-public information affecting market integrity.
With only 3% of traders influencing prices effectively, the majority remain at a disadvantage in prediction markets like Polymarket.(Source)
