Wall Street stocks jumped Tuesday as an Iran-Israel ceasefire appeared to hold through its first day and oil prices continued their retreat.

Major indices spent the entire day in positive territory with both Iran and Israel refraining from new attacks after a barrage of last-minute strikes.

With the "deescalation, the market seems to be doing better," said Art Hogan, chief market strategist of B. Riley Wealth, who also described Federal Reserve Chair Jerome Powell's testimony before Congress as constructive for equities.

The Dow Jones Industrial Average finished up 1.2 percent at 43,089.02.

The broad-based S&P 500 advanced 1.1 percent to 6,092.18, while the tech-rich Nasdaq Composite Index jumped 1.4 percent to 19,912.53.

In a first day of congressional testimony, Powell told lawmakers that the central bank can afford to wait for the impact of tariffs before deciding on further interest rate cuts.

But Powell "didn't close the door" to a potential rate cut, Hogan said.

Trump has been outspoken in ridiculing Powell's decisions thus far, referring to the Fed chair in a social media post Tuesday as a "dumb, hardheaded person."

In recent days, some other Fed officials have said they could favor a rate cut in July if inflation stays muted.

Data released Tuesday showed US consumer confidence fell as participants in a survey expressed worries about tariffs.

Among individual companies, Carnival jumped 6.9 percent after the cruise company reported much higher profits and said advanced bookings for 2026 were in line with 2025 record levels.

But KB Home fell 0.5 percent as the homebuilder lowered some of its projections, saying that market conditions had softened.

Defense-related stocks were lower with the improving conditions in the Middle East. RTX and Lockheed Martin both lost more than two percent.