04:39 PM EDT, 05/26/2026 (MT Newswires) -- The Nasdaq Composite and the S&P 500 reached new peaks on Tuesday, driven a Micron Technology ( MU ) led rally in the tech sector, while the Dow Jones Industrial Average retreated from a record high.

The Nasdaq rose 1.2% to settle at 26,656.2, while the S&P 500 climbed 0.6% to 7,519.3 -- both notching new record finish. The Dow fell 0.2% to 50,461.7, after closing at a record high in the previous session.

Six of the 11 sectors ended in the green, led by tech's 1.7% advance, while energy saw the steepest decline.

US markets were closed Monday for the Memorial Day holiday.

Micron shares surged 19%, the best performer on the S&P 500, as UBS Securities boosted it price target on the semiconductor manufacturer's stock to $1,625 from $535.

Micron's market capitalization crossed the $1 trillion mark for the first time.

Micron's valuation should get a further boost from long-term agreements in the memory industry, UBS said Tuesday.

On Semiconductor (ON) shares jumped 9%, the second-top gainer on the S&P 500. Western Digital ( WDC ) shares climbed 8.3%, also among the biggest gainers on the index.

Some 95% of S&P 500 companies have reported their quarterly financial results in the latest cycle, with earnings up about 28% from a year earlier and revenue rising 11.1%, Oppenheimer Asset Management said in a note.

Ahead of the earnings season, FactSet put expected earnings growth at 12.6% year over year, according to the brokerage.

"The (first-quarter) earnings season rolled on, with many firms reporting strong results and positive guidance," Oppenheimer Asset Management Chief Investment Strategist John Stoltzfus said. "Bears, skeptics, and nervous investors have been able to take some profits without (the fear of missing out) within what appears to us a bull market that persists having legs to run further."

Costco Wholesale ( COST ) , Marvell Technology ( MRVL ) , Salesforce ( CRM ) , and Dell Technologies ( DELL ) are slated to report results this week.

West Texas Intermediate crude oil was down 3% at $93.72 a barrel in Tuesday late-afternoon trade, while Brent rose 3.6% to $99.63.

Iran has a "legitimate" right to respond to any violation of a ceasefire by the US, CNN reported Tuesday, citing Tehran's Islamic Revolutionary Guard Corps. Earlier, the US military targeted Iranian missile launch sites and boats around the crucial Strait of Hormuz in what it described as "self-defense strikes," according to the report.

US President Donald Trump said Monday that negotiations with Iran were "proceeding nicely," but encouraged countries including Saudi Arabia and Pakistan to join the Abraham Accords, aimed at normalizing diplomatic ties with Israel.

"While an extended conflict with Iran remains the largest risk to continued market gains, in our view, markets are positioned for more progress on peace talks and the Strait of Hormuz reopening," D.A. Davidson said in a report Tuesday.

US Treasury yields were lower, with the 10-year rate last down 6.6 basis points at 4.5% and the two-year rate losing 7.7 basis points to 4.06%.

"Investors remain focused on whether energy markets stabilize or whether higher oil prices start feeding back into inflation expectations and bond yields again," Saxo Bank said in a report Tuesday.

Elbit Systems' ( ESLT ) first-quarter results rose year on year, while the company said its order backlog topped $30 billion, lifted by surging demand from Israel's Ministry of Defense amid ongoing regional conflicts. The company's US-listed shares advanced 11%.

AutoZone ( AZO ) shares plummeted 9%, the steepest decline on the S&P 500, after the auto parts retailer's fiscal third-quarter earnings topped market estimates, but revenue fell short.

In economic news, US consumer confidence fell in May amid mounting inflation concerns as the Middle East conflict has stretched for about three months now, a survey by the Conference Board showed Tuesday.

Separately, US annual home price growth decelerated in March, with more than half of the 20 major markets logging decreases, S&P Global ( SPGI ) division S&P Dow Jones Indices said Tuesday.

Gold was last down 0.3% at $4,508.30 per troy ounce, while silver rose 1.5% $77.35 per ounce.