Nvidia chipmaker Taiwan Semi reported strong sales while Delta stock flew on Q2 results. On Wednesday, Nvidia stock briefly topped a $4 trillion market cap while AI plays Astera Labs and Rubrik flashed buy signals.

US stock market today opened slightly lower as Dow, S&P 500, and Nasdaq futures paused after a powerful tech rally led by Nvidia, which just hit a historic $4 trillion market value. Meanwhile, President Trumps new tariff threats—including a proposed 50% import tax on Brazil and extra tariffs on BRICS nations—are now in focus.

Gains in Nvidia helped the NASDAQ Composite finish at a record-high close of 20,611.34 points. The S&P 500 rose 0.6% to 6,263.28 points, remaining close to a recent peak, while the Dow Jones Industrial Average rose 0.5% to 44,458.40 points.

Both the Nasdaq and S&P reached new records, as did Nvidia after becoming the world’s first $4 trillion company. Copper futures and mining companies rallied after President Trump said levies on the metal will go into effect in early August.

The S&P 500 ended Tuesday marginally lower after President Donald Trump said that there would be no extensions on his new Aug. 1 tariff deadline.

Major stock indexes rose on Wednesday as Nvidia briefly climbed to a $4-trillion valuation, while the euro edged lower, with the Trump administration getting closer to a deal with its biggest trading partner,

Nearly 230,000 Americans applied for unemployment benefits last week, fewer than economists had expected, according to the latest weekly jobless-claims data, released Thursday. Also, the number of Americans continuing to collect benefits stood at just under 1.

Continuing questions about the impact of Trump administration tariffs caused U.S. equities to be higher but little changed at midday.

Investors are keeping a close eye on tariff developments ahead of U.S. jobless data due later Thursday.