A series of trades worth $800 million made minutes before a Truth Social post from Donald Trump sent markets swinging is an act of treason, one of America's most prominent economists has said.
An entity or several entities traded heavily on S&P 500 and oil futures, making an immense sum of money in the process.
Nobel Laureate Paul Krugman lashed out at the mystery traders.
"When officers of a company or people close to them exploit confidential information for personal financial gain, that's insider trading — which is illegal," Krugman wrote.
"But we have another word for situations in which people with access to confidential information regarding national security — such as plans to bomb or not to bomb another country — exploit that information for profit.
"That word is 'treason'."