JPMorgan Chase stock fell 1.9% on Tuesday. This followed President Donald Trump's threats of new tariffs against eight NATO members.
The broader market sell-off was widespread. The S&P 500 fell 1.5%. The Dow Jones Industrial Average dropped 682 points.
The downturn affected most sectors. Banks, technology, retail, and industrial companies experienced sharp losses.
U.S. markets reacted for the first time to the escalating trade tensions. Markets had been closed the preceding Monday for a public holiday.