Artificial Trading Volume on Polymarket Exposed by Columbia Researchers

By Patricia Miller

Nov 07, 2025

1 min read

Polymarket's trading volume may be inflated due to wash trading, misleading investors about market activity, study reveals.

#What Does Increased Trading Volume on Polymarket Mean?

Increased trading volume on Polymarket, a blockchain-based prediction market platform, raises questions about the authenticity of its trading activity. Recent findings from researchers at Columbia University reveal that certain trading volumes on this platform appear artificially inflated. This situation arises from a practice known as wash trading, where traders engage in repetitive buy and sell transactions of the same contracts.

Wash trading creates a misleading view of market activity, suggesting higher interest or liquidity than truly exists. According to the study, this manipulation is particularly prevalent in sports markets compared to other areas such as political predictions or cryptocurrency-related contracts.

#How Does Wash Trading Impact the Market?

Understanding wash trading is crucial for investors. This deceptive practice does more than skew volume; it can distort market perceptions and lead to misguided investment decisions. When traders see high trading volumes, they may mistakenly interpret it as a signal to enter a market, only to find that the underlying activity is not genuine. Consequently, it’s vital for retail investors to scrutinize trading trends and be mindful of potential artificial inflation.

Polymarket has acknowledged the study and is currently considering its findings but has not explicitly taken responsibility for this inflated activity. As an investor, staying informed about these practices can help in making more educated and strategic decisions in the prediction market space.

Important Notice And Disclaimer

This article does not provide any financial advice and is not a recommendation to deal in any securities or product. Investments may fall in value and an investor may lose some or all of their investment. Past performance is not an indicator of future performance.