Dimon Echoes Rate Risks

Jamie Dimon used his annual letter on April 6 to warn that inflation and interest rates could move higher than markets expect. (jpmorganchase.com) Dimon wrote that the war in Iran could produce “significant ongoing oil and commodity price shocks” and reshape supply chains, a mix he said could keep inflation sticky. Reuters reported the warning the same day, saying he tied those risks to higher interest rates than investors now price in. (jpmorganchase.com) (usnews.com) He also wrote that “high asset prices” add risk if conditions worsen, even as he said the United States economy remains resilient, with consumers still spending and businesses still healthy. Yahoo Finance said the letter followed a quarter in which the Standard and Poor’s 500 had its worst performance since 2022. (jpmorganchase.com) (finance.yahoo.com) The mechanics are simple: when interest rates rise, future profits are discounted more heavily, so stocks, bonds, and real estate can all be valued lower at the same time. Buffett made that point in a 1999 Fortune article, saying rates act on valuations the way gravity acts on matter. (berkshirehathaway.com) That link between rates and prices has been part of Buffett’s public comments well beyond 1999. In a 2023 interview, CNBC quoted him saying higher borrowing costs are “an anchor on asset values.” (cnbc.com) Dimon’s letter put that old valuation argument into a 2026 setting shaped by war, energy prices, government deficits, and heavy spending on artificial intelligence. He wrote that the economy has also been supported by past stimulus and large deficit spending, which can leave markets more sensitive if inflation stops cooling. (jpmorganchase.com) He did not argue that every risk is already a systemic crisis. Reuters reported that Dimon said the $1.8 trillion private credit market “probably” does not pose a systemic threat, while still warning that losses in leveraged lending could be higher than expected when the credit cycle weakens. (usnews.com) The contrast is that JPMorgan entered this warning period from a position of strength. Yahoo Finance said the bank had posted record revenue of $185.6 billion, but Dimon still devoted pages of the letter to risks that could hit markets in the second half of 2026. (finance.yahoo.com) The thread running through both Dimon’s warning and Buffett’s older one is not a forecast for next week’s stock move. It is the same arithmetic both men described: if inflation proves sticky and rates stay high, expensive assets have less room for error. (berkshirehathaway.com) (jpmorganchase.com)