Dimon's comments Wednesday come as Trump has threatened to impose a 25 percent tariff on products from Mexico and Canada by February 1 and a 10 percent tariff on Chinese imports. Earlier Wednesday, Trump also teased the notion of imposing "taxes, tariffs, and sanctions" on Russia if it doesn't end its war against Ukraine.

JPMorgan Chase CEO Jamie Dimon on Wednesday said the U.S. stock market is overvalued and explained why he’s a little more pessimistic about the global economy than your average Wall Street insider.

JPMorgan CEO Jamie Dimon sounded the alarm on stocks in an interview today at the World Economic Forum in Davos, Switzerland, saying that the market looks overvalued. "Asset prices are kind of inflated, by any measure," Dimon told CNBC in Davos. He added that "they are in the top 10% or 15%" of historical valuations.