Flagship newsletter icon
From Semafor Flagship
In your inbox, every weekday
Sign up

War-linked bets spark insider trading fears

Apr 21, 2026, 7:58am EDT
PostEmailWhatsapp
US President Donald Trump.
Nathan Howard/Reuters

Investors have made huge bets just before US President Donald Trump’s announcements about the Iran war, raising concerns about insider trading.

A BBC analysis found a “consistent pattern” of trading spikes hours, or even minutes, before a White House public statement sent oil prices or the stock market up or down.

The Guardian similarly noted more than a dozen $100,000 bets on prediction markets foretelling the February air strikes on Iran, while The New York Times last month reported 150 bets of $1,000 or more predicting the start of the war.

Insider trading is illegal, but “there is a strong chance that no one will be prosecuted” because it is hard to prove, a legal scholar told the BBC.

AD