The White House has reportedly sent an email to its staff warning them against using confidential information to place bets in financial markets or on betting platforms during the Iran war.
The email was sent on March 24, a day after President Donald Trump announced talks with Iran to stop the war and halt US attacks on power plants in Tehran.
A series of profitable bets has raised questions about potential insider trading linked to Trump's decision-making on military actions in Iran and Venezuela.
Three accounts on Polymarket earned over $600,000 by correctly betting on the timing of the ceasefire with Iran, sparking outrage and criticism from Democrats.
White House spokesman Davis Ingle denied any wrongdoing, saying President Trump's only interest is the best interest of the American people.