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Columbia University Study Reveals Polymarket Wash Trading

BY Solomon M.·2 MIN READ·NOVEMBER 8, 2025

Polymarket Wash Trading Allegations: Market Implications and Regulatory Scrutiny

Columbia University researchers, Rajiv Sethi and Yash Kanoria, reveal that up to 60% of Polymarket trades were inflated through wash trading in late 2024.

KEY FINDINGS - EVIDENCE LEVEL: MULTI-SOURCE
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Key Points:
  • Polymarket trading volume potentially inflated by 25%.
  • No response from Polymarket leadership as study circulates.
  • MATIC and USDC could face indirect effects.

The report raises significant concerns about trading authenticity, potentially affecting trust in Polymarket and the wider decentralized prediction market sector.

Recent Allegations of Wash Trading

Columbia University researchers allege that approximately 25% of Polymarket’s trades are artificially inflated. The study suggests that figures spiked as high as 60% in late 2024. Rajiv Sethi, a researcher at Columbia University, remarked, “The share of suspected fake trades peaked at nearly 60% of total weekly volume in December 2024 and has continued through October 2025. Sports and election markets were hit hardest, with some weeks showing over 90% of trades as inauthentic.” This claim has gathered industry attention, awaiting Polymarket’s official response.

The study conducted by Rajiv Sethi and Yash Kanoria examined on-chain data from Polymarket, raising questions about its integrity. For insights into cryptocurrency trading dynamics, CryptoRank_io provides valuable market data. No official statements have been released by Polymarket leadership addressing the wash trading allegations.

Market Reactions and Concerns

Immediate market reactions to the study remain muted, but concern persists among traders and industry observers. Key assets potentially affected include MATIC and USDC, due to their involvement in the trades and settlement process.

The allegations pose potential reputational risks for Polymarket and similar platforms. The study’s revelations about wash trading raise serious concerns about the trustworthiness of decentralized finance platforms and could have long-lasting implications. Industry participants await further developments, which could impact the cryptocurrency market’s dynamics and trust levels. To stay updated on these trends, follow CryptoRank_io.

Regulatory and Investor Outlook

No regulatory bodies have addressed the study publicly, and institutional investor reactions are also pending. Past instances of wash trading have often led to scrutiny and trust issues in the respective markets, influencing trading volumes.

Historical data suggests that wash trading allegations can harm market trust, leading to investor withdrawal. For further discussion and investment insights, view CryptoRank_VCs. Future regulatory or auditing requirements could emerge as a consequence, potentially affecting industry standards and trading protocols.

Disclaimer:

The content on The CCPress is provided for informational purposes only and should not be considered financial or investment advice. Cryptocurrency investments carry inherent risks. Please consult a qualified financial advisor before making any investment decisions.

SOURCE TRANSPARENCY
  • External Source - Referenced domain: twitter.com
  • External Source - Referenced domain: thestreet.com
  • Byline - Reported by Solomon M.
  • Coverage Desk - Primary editorial category: News
  • Media Asset - Featured image served from the WordPress media library
Columbia University Study Reveals Polymarket Wash Trading | TheCCPress