U.S. stock indices closed firmly in positive territory after a choppy trading session, fueled by a tech sector rally following President Donald Trump's unexpected decision to exempt certain Chinese imports from additional tariffs.

Key Market Movements:

• S&P 500 gained 42.61 points (▲0.79%)

• Dow Jones Industrial Average rose 312.08 points (▲0.78%)

• NASDAQ Composite added 107.03 points (▲0.64%)

Catalyst:
The rally came after the U.S. government announced on Saturday that it would exclude Chinese-made computers and mobile phones from the additional tariffs previously imposed by President Trump. This policy shift particularly benefited technology stocks, which led Monday's market advance.

Context:
The tariff exemption marks a significant development in ongoing U.S.-China trade relations, providing immediate relief to tech companies reliant on Chinese manufacturing. Market analysts suggest the move may ease recent concerns about supply chain costs and profit margins in the sector.