The Fortune article, which appeared about a week after suspicions of a different kind of manipulation on Polymarket, cited research done by two blockchain analytics firms. One, Chaos Labs, “concluded that about a third of the trading volume – and total number of users – on the Presidential Market alone was likely wash trading, along with all markets.” The other, Inca Digital, “found that a ‘significant portion of the volume’ in the market could be attributed to potential laundry business,” the magazine said.