US benchmark equity indexes are on track to close higher on Monday as investors respond to the latest tariff updates.

The Dow Jones Industrial Average gained 1.3% to 40,718.5, while the Nasdaq Composite increased 1.3% to 16,943.1. The S&P 500 was up 1.4% to 5,436.2. All sectors increased, with real estate and utilities posting the highest gains.

Charles River Laboratories International (CRL) was the top performer on the S&P 500, with shares up 7.5%. TD Cowen adjusted the price target on the company's stock to $105 from $179, while BofA Securities cut the price target to $150 from $185.

Palantir Technologies (PLTR) was up 5.8%. The company's deal with the North Atlantic Treaty Organization represents an additional boost with artificial intelligence initiatives gaining momentum across both US and European governments, Wedbush Securities said. Analysts, including Daniel Ives, said the company's "unique" software will help it capitalize on the growing demand for AI.

DaVita (DVA) shares were down 3.7%, the steepest decline on the S&P 500. The company said that some of its operations were affected by a ransomware incident that occurred on Saturday.

The 10-year US Treasury yield lost 11.5 basis points to 4.38%, while the two-year rate was down 10.5 basis points to 3.85%.

May West Texas Intermediate crude oil was up 0.2% to $61.66 a barrel.