Polymarket's Volume Manipulation Linked to Wash Trading

Columbia researchers found 25% of Polymarket's volume involved wash trades.
Polymarket's design features enabled large-scale wash trading.
14% of 1.26M wallets flagged as wash trading, with 43K wallets generating $1M.
Fake trading peaked at 60% weekly in December 2024, dropped to 5% in May, and rose to 20% by October.
Polymarket representative reviewed the study amid $15B valuation.
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