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 Trump’s new tariff threats—including a proposed 50% import tax on Brazil and extra tariffs on BRICS nations—are now in focus.

The Dow Jones average finished higher Wednesday after the Fed's June minutes flicked to potential rate cuts. Nvidia set a new high, and hit the $4 trillion mark in valuation.