Columbia Study Reveals Potential Wash Trading on Polymarket
- An estimated 25% of Polymarket’s historical trading volume may be inflated by wash trading.
- Fake trades peaked at nearly 60% of weekly volume in December and remain a concern through October.
- Over 90% of trades in sports and election markets were flagged as potentially inauthentic during some weeks.
- One identified cluster involved over 43,000 wallets, generating nearly $1 million in trading volume, mostly under a penny.
- Polymarket does not require identity verification and charges no fees, making it vulnerable to manipulation.
The findings from Columbia University suggest that wash trading practices can distort market perceptions and undermine trust in prediction markets like Polymarket, particularly as they prepare for a return to the U.S. market with plans to issue a token.
With nearly 60% of trades being potentially fake at one point, the implications for market integrity are significant as Polymarket seeks to raise funds at an up-to-$15 billion valuation. Source
