12:39 PM EDT, 03/30/2026 (MT Newswires) -- US equity indexes traded mixed midday Monday after Federal Reserve Chair Jerome Powell said inflation expectations remain well anchored.

Meanwhile, President Donald Trump warned Iran of dire consequences if it fails to reach a ceasefire agreement.

The Dow Jones Industrial Average rose 0.7% to 45,490.8, with the S&P 500 up 0.3% to 6,388.5. The Nasdaq Composite, however, fell 0.1% to 20,920.2.

Powell said Monday inflation expectations remain well anchored after an expected short-term price shock from the conflict in Iran, noting that the longer lag with which monetary policy works allows the Federal Open Market Committee to look past brief supply shocks.

"Inflation expectations do appear to be well anchored beyond the short term," Powell told a class of economics students at Harvard University.

West Texas Intermediate crude oil futures jumped 3.9% to $103.58.

Trump said the US may blow up and completely obliterate Iran's electric plants and oil wells if a deal to end the war is not reached and the Strait of Hormuz is not reopened, CNN reported.