Yes, Jamie Dimon, we live in dangerous times. Good thing we stayed in the market anyway

Jamie Dimon, CEO of JPMorgan Chase, testifies during the Senate Banking, Housing and Urban Affairs Committee hearing titled Annual Oversight of Wall Street Firms, in the Hart Building on Dec. 6, 2023.
Tom Williams | Cq-roll Call, Inc. | Getty Images

Early on Oct. 13, JPMorgan CEO Jamie Dimon delivered some perhaps prophetic words: "This may be the most dangerous time the world has seen in decades." The S&P 500 closed the prior session at 4,349. Over the past nine weeks since then, the index has gained roughly 9%, as of Monday morning trading.

I'm sure some of you sold on Dimon's words, which accompanied a strong third quarter for the bank. He is, after all, the most important banker on Earth, with sources far greater than almost anyone.

On Nov. 29, Dimon reiterated at The New York Times' DealBook Summit: "It's dangerous," again citing the geopolitical strife caused by Russia's war in Ukraine and Hamas' terrorist attack on Israel. The S&P 500 finished that day at 4,550 — an increase of 3.7% from Friday's close of 4,719.