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Fortune
Fortune
Eleanor Pringle

For years, the risk Jamie Dimon was most concerned about was geopolitics. His answer has shifted

Jamie Dimon, chief executive officer of JPMorgan Chase & Co., at the Norges Bank Investment Management annual investment conference in Oslo, Norway, on Tuesday, April 28, 2026. (Credit: Carina Johansen—Bloomberg/Getty Images)

When Jamie Dimon is asked about the greatest risk he sees to the global economy, his answer for years has been “geopolitics.”

It’s been with good reason. In the past handful of years, Russia invaded Ukraine; a major conflict broke out between Israel and Palestine; and the U.S. and Israel then launched attacks on Iran, with the fallout spreading across the Middle East. Add to that global tensions rising because of President Trump’s tariff regime, a threat to invade Greenland, and escalating trade tensions with China, and the drama on the world stage seems to be reaching a crescendo.

But even these facts have been equaled by a new threat the JPMorgan CEO sees on the horizon: cyber.

Last month, Fortune’s Beatrice Nolan exclusively reported that AI company Anthropic is developing, and had begun testing with early access customers, a new AI model more capable than any it has released previously, following a data leak that revealed the model’s existence. A draft blog post that was available in an unsecured and publicly searchable data store prior to Fortune’s report said the new model is called Claude Mythos and that the company believes it poses unprecedented cybersecurity risks. A multibillion-dollar market rout ensued, particularly in the software and financial services sectors.

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