Markets React to Fake News on Tariffs: A Cautionary Tale for Traders

On April 8, 2025, U.S. financial markets experienced a whiplash moment after an unverified social media report falsely claimed the Trump administration was preparing a 90-day suspension of tariffs. The news—initially published by pseudonymous Twitter personality “Walter Bloomberg” and subsequently picked up by credible outlets including CNBC and Reuters—set off an immediate and massive rally in equity markets. The rally added trillions of dollars in paper value in a matter of minutes.