A bettor earned a substantial sum by predicting the removal of the Venezuelan leader shortly prior to it was officially announced, sparking debate about potential gains made from confidential information of American actions.
Predictions made on the forecasting site, a blockchain-based service, that the Venezuelan president would be no longer in control by the close of the month increased in the time leading up to former President Trump announced on Saturday that the president had been seized.
One account, which joined the platform last month and took four positions, all on political events in Venezuela, made more than $436,000 from a starting bet of $32,537.
The identity is unknown. The anonymous account had only a blockchain identifier for identification.
Trading information shows that participants put the odds of Maduro's exit at just 6.5% in the afternoon of Friday, January 2nd.
But these probabilities had increased to 11% by shortly before midnight and spiked dramatically in the morning of the next day, indicating a rapid movement in betting activity right before the social media post was made.
"This specific wager has all the characteristics of a transaction based on non-public details," commented a financial reform advocate.
A small number of other individuals also earned tens of thousands of dollars from similar wagers.
Politicians are growing concerned.
A new rule presented on Monday aims to prohibit federal workers from placing bets on forecasting platforms if they have "insider details" related to a bet.
Event-driven betting sites have surged in popularity in recent years, with users able to bet on everything from sports outcomes to politics.
Prediction markets encountered regulatory challenges under the Biden administration. But it has experienced less resistance during the current presidency.
Insider trading is against the law in the stock market, but there are less oversight in the forecasting industry.
A company executive for another major platform said their site "explicitly prohibits such activities of any form."
James is a seasoned poker player and industry analyst with over a decade of experience covering UK online gaming.